[en] The Habitable Worlds Observatory (HWO) will enable a transformative leap in the direct imaging and characterization of Earth-like exoplanets. For this, NASA is focusing on early investment in technology development prior to mission definition and actively seeking international partnerships earlier than for previous missions. The "R&D for Space-Based HCI in Europe" workshop, held in March 2024 at Paris Observatory, convened leading experts in high-contrast imaging (HCI) to discuss European expertise and explore potential strategies for European contributions to HWO. This paper synthesizes the discussions and outcomes of the workshop, highlighting Europe's critical contributions to past and current HCI efforts, the synergies between ground- and space-based technologies, and the importance of laboratory testbeds and collaborative funding mechanisms. Key conclusions include the need for Europe to invest in technology development for areas such as deformable mirrors and advanced detectors, and establish or enhance laboratory facilities for system-level testing. Putting emphasis on the urgency of aligning with the timeline of HWO, the participants called on an open affirmation by the European Space Agency (ESA) that a European contribution to HWO is clearly anticipated, to signal national agencies and unlock funding opportunities at the national level. Based on the expertise demonstrated through R&D, Europe is poised to play a pivotal role in advancing global HCI capabilities, contributing to the characterization of temperate exoplanets and fostering innovation across domains.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Laginja, Iva; NOVA, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands , LIRA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Carrión-González, Óscar; LIRA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Cité, 5 place Jules Janssen, 92195, Meudon, France , MPIA, Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117, Heidelberg, Germany
Laugier, Romain; Katholieke University of Leuven, Astronomical Institute
Leboulleux, Lucie; IPAG, Univ. Grenoble Alpes, CNRS, 38000, Grenoble, France
Potier, Axel; Division of Space and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland , LIRA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Kühn, Jonas; Division of Space and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
Le Duigou, Jean-Michel; CNES - Centre National d'Etudes Spatiales, 18 Av. Edouard Belin, 31401, Toulouse, France
Mazoyer, Johan; LIRA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Cité, 5 place Jules Janssen, 92195, Meudon, France
Mesa, Dino; Astronomical Observatory of Padua
Min, Michiel; Netherlands Institute for Space Research
Mouillet, David; IPAG, Univ. Grenoble Alpes, CNRS, 38000, Grenoble, France
Mugnier, Laurent M.; Office National d'Etudes et de Recherche Aerospatiale, France
Orban De Xivry, Gilles ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR)
O. Absil D. Mawet M. Karlsson et al. C.J. Evans L. Simard H. Takami et al. Three years of harvest with the vector vortex coronagraph in the thermal infrared Ground-Based and Airborne Instrumentation for Astronomy VI Bellingham SPIE 99080Q 10.1117/12.2233289 1130.85300 9908
E. Alei B.S. Konrad D. Angerhausen et al. Large Interferometer For Exoplanets (LIFE). V. Diagnostic potential of a mid-infrared space interferometer for studying Earth analogs Astron. Astrophys. 665 10.1051/0004-6361/202243760 1510.11022 A106 arXiv:2204.10041 [astro-ph.EP]
E. Alei S.P. Quanz B.S. Konrad et al. Large Interferometer For Exoplanets (LIFE): XIII. The value of combining thermal emission and reflected light for the characterization of Earth twins Astron. Astrophys. 689 10.1051/0004-6361/202450320 1407.65175 A245 arXiv:2406.13037 [astro-ph.EP]
G. Allan G. Ruane A.B. Walter et al. G.J. Ruane et al. Demonstration of coronagraph technology for high-contrast point spectroscopy of ExoEarths Techniques and Instrumentation for Detection of Exoplanets XI Bellingham SPIE 1268019 10.1117/12.2676876 1090.53040 12680
J.R.P. Angel Ground-based imaging of extrasolar planets using adaptive optics Nature 368 6468 203 207 1994Natur.368.203A 10.1038/368203a0 0948.91048
D. Angerhausen M. Ottiger F. Dannert et al. Large Interferometer for Exoplanets: VIII. Where is the phosphine? Observing exoplanetary PH3 with a space-based mid-infrared nulling interferometer Astrobiology 23 2 183 194 2023AsBio.23.183A 10.1089/ast.2022.0010 arXiv:2211.04975 [astro-ph.EP]
J.N. Ashcraft H. Choi E.S. Douglas et al. L.E. Coyle S. Matsuura M.D. Perrin et al. The space coronagraph optical bench (SCoOB): 1. Design and assembly of a vacuum-compatible coronagraph testbed for spaceborne high-contrast imaging technology Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave Bellingham SPIE 121805L 10.1117/12.2628855 0837.65015 12180
V.P. Bailey E. Bendek B. Monacelli et al. Nancy Grace Roman Space Telescope coronagraph instrument overview and status Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 126800T 10.1117/12.2679036 arXiv:2309.08672
P. Baudoz R. Galicher A. Potier et al. R. Navarro R. Geyl et al. Optimization and performance of multi-deformable mirror correction on the THD2 bench Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III Bellingham SPIE 784 793 10.1117/12.2314089 10706
P. Baudoz C. Desgrange R. Galicher et al. L.E. Coyle S. Matsuura M.D. Perrin et al. Polarization effects on high contrast imaging: measurements on THD2 bench Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave Bellingham SPIE 130926L 10.1117/12.3020010 13092
R. Belikov C.C. Stark N. Siegler et al. Coronagraph design survey for future exoplanet direct imaging space missions Proc. SPIE SPIE, in these proceedings
J.L. Beuzit A. Vigan D. Mouillet et al. SPHERE: the exoplanet imager for the Very Large Telescope Astron. Astrophys. 631 10.1051/0004-6361/201935251 1330.65159 A155 arXiv:1902.04080 [astro-ph.IM]
E.E. Bloemhof R.G. Dekany M. Troy et al. Behavior of remnant speckles in an adaptively corrected imaging system Astrophys. J. 558 1 2001ApJ..558L.71B 10.1086/323494 1314.20047 L71
A. Boccaletti G. Chauvin A.M. Lagrange et al. Near-IR coronagraphic imaging of the companion to HR 7672 Astron. Astrophys. 410 1 283 288 2003A&A..410.283B 10.1051/0004-6361:20031216 0869.92021
A. Boccaletti J. Schneider W. Traub et al. SPICES: spectro-polarimetric imaging and characterization of exoplanetary systems. From planetary disks to nearby Super Earths Exp. Astron. 34 2 355 384 2012ExA..34.355B 10.1007/s10686-012-9290-5 arXiv:1203.0507 [astro-ph.IM]
A. Boccaletti P.O. Lagage P. Baudoz et al. The mid-infrared instrument for the James Webb Space Telescope, V: predicted performance of the MIRI coronagraphs Publ. Astron. Soc. Pac. 127 953 633 2015PASP.127.633B 10.1086/682256 arXiv:1508.02352 [astro-ph.IM]
A. Boccaletti C. Cossou P. Baudoz et al. JWST/MIRI coronagraphic performances as measured on-sky Astron. Astrophys. 667 10.1051/0004-6361/202244578 0871.17004 A165 arXiv:2207.11080 [astro-ph.IM]
M. Bonafous R. Galicher P. Baudoz et al. R. Navarro J.H. Burge et al. Development and characterization of Four-Quadrant Phase Mask coronagraph (FQPM) Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II Bellingham SPIE 99126J 10.1117/12.2234497 9912
B. Brandl F. Bettonvil R. van Boekel et al. METIS: the mid-infrared ELT imager and spectrograph Messenger 10.18727/0722-6691/5218 1481.91077
R. Briguglio M. Xompero M. Scalera et al. K. Minoglou N. Karafolas B. Cugny et al. Contactless actuators and pyramid wavefront sensor, the SPLATT concept for space active optics: an overview of the project and the last laboratory results Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 127772W 10.1117/12.2690310
A. Caillat M. Ferrari M. Marcos et al. L.E. Coyle S. Matsuura M.D. Perrin et al. Super polished mirrors for the Roman Space Telescope CoronaGraphic Instrument: design, manufacturing, and optical performances Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave Bellingham SPIE 121801Y 10.1117/12.2627240 12180
Ó. Carrión-González A. García Muñoz J. Cabrera et al. Directly imaged exoplanets in reflected starlight: the importance of knowing the planet radius Astron. Astrophys. 640 10.1051/0004-6361/202038101 0063.05162 A136 arXiv:2006.08784 [astro-ph.EP]
Ó. Carrión-González A. García Muñoz N.C. Santos et al. Constraining the radius and atmospheric properties of directly imaged exoplanets through multi-phase observations Astron. Astrophys. 655 10.1051/0004-6361/202141469 67.0820.04 A92 arXiv:2108.10918 [astro-ph.EP]
Ó. Carrión-González J. Kammerer D. Angerhausen et al. Large Interferometer for Exoplanets (LIFE). X. Detectability of currently known exoplanets and synergies with future IR/O/UV reflected-starlight imaging missions Astron. Astrophys. 678 10.1051/0004-6361/202347027 1516.65084 A96
C. Cavarroc A. Boccaletti P. Baudoz et al. Fundamental limitations on Earth-like planet detection with extremely large telescopes Astron. Astrophys. 447 1 397 403 2006A&A..447.397C 10.1051/0004-6361:20053916
D. Charbonneau T.M. Brown D.W. Latham et al. Detection of planetary transits across a Sun-like star Astrophys. J. Lett. 529 1 L45 L48 2000ApJ..529L.45C 10.1086/312457 1024.83505 arXiv:astro-ph/9911436 [astro-ph]
G. Chauvin A.M. Lagrange C. Dumas et al. A giant planet candidate near a young brown dwarf. Direct VLT/NACO observations using IR wavefront sensing Astron. Astrophys. 425 L29 L32 2004A&A..425L.29C 10.1051/0004-6361:200400056 arXiv:astro-ph/0409323 [astro-ph]
M.M. Colavita E. Serabyn R. Millan-Gabet et al. Keck interferometer nuller data reduction and on-sky performance Publ. Astron. Soc. Pac. 121 884 1120 1138 2009PASP.121.1120C 10.1086/606063
V. Costes L. Perret D. Laubier et al. H.A. MacEwen J.B. Breckinridge et al. Active optics for next generation space telescopes UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII Bellingham SPIE 103980S 10.1117/12.2274791 10398
R. Cousty T. Antonini M. Aubry et al. B. Cugny N. Karafolas Z. Sodnik et al. Monomorph deformable mirrors: from ground-based facilities to space telescopes International Conference on Space Optics — ICSO 2016 Bellingham SPIE 1056231 10.1117/12.2296247 10562
M. Damiano R. Hu ExorelR: a Bayesian inverse retrieval framework for exoplanetary reflected light spectra Astron. J. 159 4 175 2020AJ..159.175D 10.3847/1538-3881/ab79a5 1463.16049
M. Damiano R. Hu S.R. Hildebrandt Multi-orbital-phase and multiband characterization of exoplanetary atmospheres with reflected light spectra Astron. J. 160 5 206 2020AJ..160.206D 10.3847/1538-3881/abb76a 0432.35002 arXiv:2009.08579 [astro-ph.EP]
R. Davies V. Hörmann S. Rabien et al. MICADO: the multi-adaptive optics camera for deep observations Messenger 10.18727/0722-6691/5217 0644.65008
R. Davies O. Absil G. Agapito et al. The enhanced resolution imager and spectrograph for the VLT Astron. Astrophys. 674 10.1051/0004-6361/202346559 07967119 A207
D. Defrère P.M. Hinz B. Mennesson et al. Nulling data reduction and on-sky performance of the Large Binocular Telescope Interferometer Astrophys. J. 824 2 66 2016ApJ..824..66D 10.3847/0004-637x/824/2/66 10.0355.02
D. Defrère O. Absil J.P. Berger et al. Hi-5: a potential high-contrast thermal near-infrared imager for the VLTI Proc. SPIE 10701U 10.1117/12.2313700 arXiv:1807.07467 10701
D. Defrère A. Bigioli C. Dandumont et al. L-band nulling interferometry at the VLTI with Asgard/Hi-5: status and plans Optical and Infrared Interferometry and Imaging VIII Bellingham SPIE 184 199 10.1117/12.2627953 12183
E.S. Douglas J. Debes B. Mennesson et al. Sensitivity of the Roman Coronagraph Instrument to exozodiacal dust Publ. Astron. Soc. Pac. 134 1032 2022PASP.134b4402D 10.1088/1538-3873/ac3f7b 10.0355.02 024402 arXiv:2112.12804 [astro-ph.EP]
B.D. Dube A.J. Riggs B.D. Kern et al. Exascale integrated modeling of low-order wavefront sensing and control for the roman coronagraph instrument J. Opt. Soc. Am. A 39 12 C133 C142 10.1364/JOSAA.472364 0989.80008 https://opg.optica.org/josaa/abstract.cfm?URI=josaa-39-12-C133
S. Ertel D. Defrère P. Hinz et al. The HOSTS survey—exozodiacal dust measurements for 30 stars Astron. J. 155 5 194 2018AJ..155.194E 10.3847/1538-3881/aab717
S. Ertel D. Defrère P. Hinz et al. The HOSTS survey for exozodiacal dust: observational results from the complete survey Astron. J. 159 4 177 2020AJ..159.177E 10.3847/1538-3881/ab7817 arXiv:2003.03499 [astro-ph.SR]
European Space Agency: Voyage 2050 senior committee report. Tech. rep., European Space Agency (2021). https://www.cosmos.esa.int/documents/1866264/1866292/Voyage2050-Senior-Committee-report-public.pdf. Accessed: 2024-10-18
L. Feinberg J. Ziemer M. Ansdell et al. L.E. Coyle S. Matsuura M.D. Perrin et al. The Habitable Worlds Observatory engineering view: status, plans, and opportunities Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave Bellingham SPIE 130921N 10.1117/12.3018328 13092
R. Galicher E. Huby P. Baudoz et al. A family of phase masks for broadband coronagraphy example of the wrapped vortex phase mask theory and laboratory demonstration Astron. Astrophys. 635 10.1051/0004-6361/201936971 A11 arXiv:2001.06114 [astro-ph.IM]
A. García Muñoz S. Pérez-Hoyos A. Sánchez-Lavega Glory revealed in disk-integrated photometry of Venus Astron. Astrophys. 566 2014A&A..566L..1G 10.1051/0004-6361/201423531 L1 arXiv:1406.0277 [astro-ph.EP]
A.M. Glauser S.P. Quanz J. Hansen et al. The Large Interferometer for Exoplanets (LIFE): a space mission for mid-infrared nulling interferometry Optical and Infrared Interferometry and Imaging IX Bellingham SPIE 354 374 10.1117/12.3019090 13095
K.V. Gorkom E.S. Douglas J.N. Ashcraft et al. L.E. Coyle S. Matsuura M.D. Perrin et al. The space coronagraph optical bench (SCoOB): 2. Wavefront sensing and control in a vacuum-compatible coronagraph testbed for spaceborne high-contrast imaging technology Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave Bellingham SPIE 121805M 10.1117/12.2630704 12180
S. Lacour M. Nowak GRAVITY Collaboration et al. First direct detection of an exoplanet by optical interferometry - astrometry and k-band spectroscopy of hr 8799 e Astron. Astrophys. 623 2019A&A..623L.11G 10.1051/0004-6361/201935253 1187.85021 L11
S. Guionie G. Briche D. Sucher et al. B. Cugny Z. Sodnik N. Karafolas et al. Full scale active telescope engineering model International Conference on Space Optics — ICSO 2020 Bellingham SPIE 118522Y 10.1117/12.2599459 11852
A. Hatzes The EPRAT roadmap for extrasolar planets 38th COSPAR Scientific Assembly 2
O. Herscovici-Schiller L.M. Mugnier P. Baudoz et al. L.M. Close L. Schreiber D. Schmidt et al. Towards the experimental validation of the non-linear dark hole on the THD bench Adaptive Optics Systems VI Bellingham SPIE 738 751 10.1117/12.2314100 10703
S. Hinkley B.R. Oppenheimer R. Soummer et al. Temporal evolution of coronagraphic dynamic range and constraints on companions to Vega Astrophys. J. 654 1 633 2007ApJ..654.633H 10.1086/509063
W.F. Hoffmann P.M. Hinz D. Defrère et al. Operation and performance of the mid-infrared camera, NOMIC, on the Large Binocular Telescope Ground-Based and Airborne Instrumentation for Astronomy V 91471O 10.1117/12.2057252 9147
E. Hugot M. Ferrari K. El Hadi et al. Active optics: stress polishing of toric mirrors for the vlt sphere adaptive optics system Appl. Opt. 48 15 2932 2941 2009ApOpt.48.2932H 10.1364/AO.48.002932 1221.35176 https://opg.optica.org/ao/abstract.cfm?URI=ao-48-15-2932
E. Hugot M. Ferrari K. El Hadi et al. Active optics methods for exoplanet direct imaging - stress polishing of supersmooth aspherics for vlt-sphere planet finder Astron. Astrophys. 538 10.1051/0004-6361/201117816 A139
J. Kammerer S.P. Quanz Simulating the exoplanet yield of a space-based mid-infrared interferometer based on Kepler statistics Astron. Astrophys. 609 2018A&A..609A..4K 10.1051/0004-6361/201731254 07731492 A4 arXiv:1707.06820 [astro-ph.EP]
J. Kammerer R.A. Cooper T. Vandal et al. The near infrared imager and slitless spectrograph for JWST. V. Kernel phase imaging and data analysis Publ. Astron. Soc. Pac. 135 1043 2023PASP.135a4502K 10.1088/1538-3873/ac9a74 014502 arXiv:2210.17528 [astro-ph.IM]
N.J. Kasdin V.P. Bailey B. Mennesson et al. M. Lystrup M.D. Perrin et al. The Nancy Grace Roman Space Telescope Coronagraph Instrument (CGI) technology demonstration Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave 114431U 10.1117/12.2562997 arXiv:2103.01980
M. Kasper N. Cerpa Urra P. Pathak et al. PCS — a roadmap for exoearth imaging with the ELT Messenger 10.18727/0722-6691/5221
P. Kern P. Lena P. Gigan et al. F.J. Roddier et al. COME-ON: an adaptive optics prototype dedicated to infrared astronomy Active Telescope Systems 54 64 10.1117/12.960810 0681.35009
M. Konacki G. Torres S. Jha et al. An extrasolar planet that transits the disk of its parent star Nature 421 6922 507 509 2003Natur.421.507K 10.1038/nature01379 1169.68341
B.S. Konrad E. Alei S.P. Quanz et al. Large Interferometer for Exoplanets (LIFE). III. Spectral resolution, wavelength range, and sensitivity requirements based on atmospheric retrieval analyses of an exo-Earth Astron. Astrophys. 664 10.1051/0004-6361/202141964 A23 arXiv:2112.02054 [astro-ph.EP]
B.S. Konrad E. Alei S.P. Quanz et al. Large Interferometer for Exoplanets (LIFE). IX. Assessing the impact of clouds on atmospheric retrievals at mid-infrared wavelengths with a Venus-twin exoplanet Astron. Astrophys. 673 10.1051/0004-6361/202245655 07731492 A94 arXiv:2303.04727 [astro-ph.EP]
O. Krause F. Müller U. Klaas et al. Precision alignment mechanisms for the Roman Coronagraph Instrument J. Astron. Telesc. Instrum. Syst. 11 2 10.1117/1.JATIS.11.2.021405 17.0049.01 021405
I. Laginja D. Doelman F. Snik et al. L.E. Coyle S. Matsuura M.D. Perrin et al. Prototyping liquid-crystal coronagraphs for exo-Earth imaging Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave Bellingham SPIE 1309227 10.1117/12.3016774 13092
Laginja, I., Baudoz, P., Potier, A., et al.: Extended linearity in the high-order wavefront sensor for the Roman coronagraph. Astron. Astrophys. (2025, accepted)
A.M. Lagrange D. Gratadour G. Chauvin et al. A probable giant planet imaged in the β pictoris disk - VLT/NaCo deep L’-band imaging Astron. Astrophys. 493 2 L21 L25 2009A&A..493L.21L 10.1051/0004-6361:200811325
M. Laslandes C. Hourtoule E. Hugot et al. B. Cugny E. Armandillo N. Karafolas et al. Last results of MADRAS, a space active optics demonstrator International Conference on Space Optics — ICSO 2012 Bellingham SPIE 1056413 10.1117/12.2309206 10564
R. Laugier D. Defrère J. Woillez et al. Asgard/NOTT: L-band nulling interferometry at the VLTI: I. Simulating the expected high-contrast performance Astron. Astrophys. 671 10.1051/0004-6361/202244351 A110
J. Le Duigou L. Bernard M. Castelnau et al. K. Minoglou N. Karafolas B. Cugny et al. Active optics for the DICOS project International Conference on Space Optics — ICSO 2022 Bellingham SPIE 127776G 10.1117/12.2691128 12777
Leger, A., Herbst, T.: DARWIN mission proposal to ESA (2007) https://doi.org/10.48550/arXiv.0707.3385. arXiv: 0707.3385
R. Lenzen M. Hartung W. Brandner et al. M. Iye A.F.M. Moorwood et al. NAOS-CONICA first on sky results in a variety of observing modes Instrument Design and Performance for Optical/Infrared Ground-Based Telescopes 944 952 10.1117/12.460044 1067.03022
R.E. Lupu M.S. Marley N. Lewis et al. Developing atmospheric retrieval methods for direct imaging spectroscopy of gas giants in reflected light. I. Methane abundances and basic cloud properties Astron. J. 152 6 217 2016AJ..152.217L 10.3847/0004-6256/152/6/217 arXiv:1604.05370 [astro-ph.IM]
J. Lustig-Yaeger V.S. Meadows G. Tovar Mendoza et al. Detecting ocean glint on exoplanets using multiphase mapping Astron. J. 156 6 301 2018AJ..156.301L 10.3847/1538-3881/aaed3a arXiv:1901.05011 [astro-ph.EP]
B. Lyot The study of the solar corona and prominences without eclipses (George Darwin lecture, delivered by M. Bernard Lyot, Assoc. R. A. S., on 1939 May 12) Mon. Not. R. Astron. Soc. 99 580 594 1939MNRAS.99.580L 10.1093/mnras/99.8.580 0021.28303
A.L. Maire R. Galicher A. Boccaletti et al. Atmospheric characterization of cold exoplanets using a 1.5-m coronagraphic space telescope Astron. Astrophys. 541 10.1051/0004-6361/201218954 1246.78001 A83
A. Mallama D. Wang R.A. Howard Venus phase function and forward scattering from H2SO4 Icarus 182 1 10 22 2006Icar.182..10M 10.1016/j.icarus.2005.12.014 0476.32028
A. Marconi M. Abreu V. Adibekyan et al. J.J. Bryant K. Motohara J.R.D. Vernet et al. ANDES, the high resolution spectrograph for the ELT: science goals, project overview, and future developments Ground-Based and Airborne Instrumentation for Astronomy X Bellingham SPIE 1309613 10.1117/12.3017966 0593.41005 13096
C. Marois B. Macintosh T. Barman et al. Direct imaging of multiple planets orbiting the star HR 8799 Science 322 5906 1348 2008Sci..322.1348M 10.1126/science.1166585 arXiv:0811.2606 [astro-ph]
S. Martin D.P. Scharf R. Wirz et al. Design study for a planet-finding space interferometer 2008 IEEE Aerospace Conference Big Sky IEEE 1 19 10.1109/AERO.2008.4526410
E.C. Matthews A.L. Carter P. Pathak et al. A temperate super-Jupiter imaged with JWST in the mid-infrared Nature 633 8031 789 792 10.1038/s41586-024-07837-8 1471.35271
M. Mayor D. Queloz A Jupiter-mass companion to a solar-type star Nature 378 6555 355 359 1995Natur.378.355M 10.1038/378355a0 0755.04005
L.C. Mayorga J. Jackiewicz K. Rages et al. Jupiter’s phase variations from Cassini: a testbed for future direct-imaging missions Astron. J. 152 6 209 2016AJ..152.209M 10.3847/0004-6256/152/6/209 arXiv:1610.07679 [astro-ph.EP]
J. Mazoyer P. Baudoz R. Galicher et al. High-contrast imaging in polychromatic light with the self-coherent camera Astron. Astrophys. 564 2014A&A..564L..1M 10.1051/0004-6361/201423375 L1 arXiv:1402.5914 [astro-ph.IM]
Mazoyer, J., Baudoz, P., Belikov, R., et al.: High-Contrast Testbeds for Future Space-Based Direct Imaging Exoplanet Missions. Bull. Am. Astron. Soc. 51(7) (2019). https://baas.aas.org/pub/2020n7i101
V.S. Meadows Reflections on O2 as a biosignature in exoplanetary atmospheres Astrobiology 17 10 1022 1052 2017AsBio.17.1022M 10.1089/ast.2016.1578 1338.91167
B. Mennesson R. Belikov E. Por et al. Current laboratory performance of starlight suppression systems and potential pathways to desired Habitable Worlds Observatory exoplanet science capabilities J. Astron. Telesc. Instrum. Syst. 10 3 10.1117/1.JATIS.10.3.035004 035004
T. Nakajima Planet detectability by an Adaptive Optics Stellar Coronagraph Astrophys. J. 425 348 1994ApJ..425.348N 10.1086/173990 1206.17001
National Academies of Sciences, Engineering, and Medicine Pathways to Discovery in Astronomy and Astrophysics for the 2020s Washington The National Academies Press 10.17226/26141 https://nap.nationalacademies.org/catalog/26141/pathways-to-discovery-in-astronomy-and-astrophysics-for-the-2020s
M. Nayak R. Lupu M.S. Marley et al. Atmospheric retrieval for direct imaging spectroscopy of gas giants in reflected light. II. Orbital phase and planetary radius Publ. Astron. Soc. Pac. 129 973 2017PASP.129c4401N 10.1088/1538-3873/129/973/034401 1391.51022 034401 arXiv:1612.00342 [astro-ph.EP]
M. N’Diaye E. Choquet S. Egron et al. et al. J.M. Oschmann Jr. M. Clampin G.G. Fazio et al. et al. High-contrast Imager for Complex Aperture Telescopes (HICAT): II. Design overview and first light results Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave Bellingham SPIE 644 654 10.1117/12.2056694 9143
E.L. Nielsen R.J. De Rosa B. Macintosh et al. The Gemini Planet Imager Exoplanet survey: giant planet and brown dwarf demographics from 10 to 100 au Astron. J. 158 1 13 2019AJ..158..13N 10.3847/1538-3881/ab16e9 arXiv:1904.05358 [astro-ph.EP]
M. Noyes A.B. Walter G. Allan et al. G.J. Ruane et al. The decadal survey testbed two: a technology development facility for future exo-Earth observatories Techniques and Instrumentation for Detection of Exoplanets XI Bellingham SPIE 1268017 10.1117/12.2676452 0984.68621 12680
J.M. O’Meara M. Ansdell J. Crooke et al. L.E. Coyle S. Matsuura M.D. Perrin et al. The Habitable Worlds Observatory science view: status, plans, and opportunities Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave Bellingham SPIE 130921M 10.1117/12.3019387 13092
K.D. Patterson B.J. Seo K. Balasubramanian et al. S.B. Shaklan et al. Design description and commissioning performance of a stable coronagraph technology development testbed for direct imaging of Earth-like exoplanets Techniques and Instrumentation for Detection of Exoplanets IX Bellingham SPIE 111171U 10.1117/12.2530401 11117
M.D. Perrin G. Duchene M. Millar-Blanchaer et al. Polarimetry with the Gemini Planet Imager: methods, performance at first light, and the circumstellar ring around HR 4796A Astrophys. J. 799 2 182 2015ApJ..799.182P 10.1088/0004-637X/799/2/182 arXiv:1407.2495 [astro-ph.EP]
L. Pogorelyuk L. Pueyo J.R. Males et al. Information-theoretical limits of recursive estimation and closed-loop control in high-contrast imaging Astrophys. J. Suppl. Ser. 256 2 39 2021ApJS.256..39P 10.3847/1538-4365/ac126d 07989224
A. Potier P. Baudoz R. Galicher et al. Comparing focal plane wavefront control techniques: numerical simulations and laboratory experiments Astron. Astrophys. 635 10.1051/0004-6361/201937015 1264.65036 A192 arXiv:2003.04336 [astro-ph.IM]
A. Potier G. Ruane C. Stark et al. Adaptive optics performance of a simulated coronagraph instrument on a large, segmented space telescope in steady state J. Astron. Telesc. Instrum. Syst. 8 3 2022JATIS..8c5002P 10.1117/1.jatis.8.3.035002 035002
L. Pueyo R. Juanola-Parramon J. Tumlinson et al. Coronagraphic detection of Earth-like planets with large, actively controlled space telescopes J. Astron. Telesc. Instrum. Syst. 8 4 2022JATIS..8d9002P 10.1117/1.JATIS.8.4.049002 049002
S.F. Redmond L.A. Pueyo E.H. Por et al. Exoplanet detection techniques for direct imaging dark zone maintenance datasets J. Astron. Telesc. Instrum. Syst. 10 4 10.1117/1.JATIS.10.4.049003 07862097 049003
M. Roulet E. Hugot C. Atkins et al. Off-axis parabolas super polished under stress: the case of the roman space telescope coronagraphic instrument mirrors Opt. Express 28 21 30555 30569 2020OExpr.2830555R 10.1364/OE.400284 https://opg.optica.org/oe/abstract.cfm?URI=oe-28-21-30555
G. Rousset F. Lacombe P. Puget et al. P.L. Wizinowich D. Bonaccini et al. NAOS, the first AO system of the VLT: on-sky performance Adaptive Optical System Technologies II 140 149 10.1117/12.459332 0077.01602
C. Sagan W.R. Thompson R. Carlson et al. A search for life on Earth from the Galileo spacecraft Nature 365 6448 715 721 1993Natur.365.715S 10.1038/365715a0 0803.54017
G. Schneider B.A. Smith E.E. Becklin et al. NICMOS imaging of the HR 4796A circumstellar disk Astrophys. J. Lett. 513 2 L127 L130 1999ApJ..513L.127S 10.1086/311921 arXiv:astro-ph/9901218 [astro-ph]
G. Schneider K. Wood M.D. Silverstone et al. NICMOS coronagraphic observations of the GM aurigae circumstellar disk Astron. J. 125 3 1467 1479 2003AJ..125.1467S 10.1086/367596
J. Schneider P. Riaud G. Tinetti et al. et al. D. Barret F. Casoli G. Lagache et al. et al. SEE-COAST: the Super-Earth Explorer SF2A-2006: Semaine de l’Astrophysique Francaise 429
E.W. Schwieterman N.Y. Kiang M.N. Parenteau et al. Exoplanet biosignatures: a review of remotely detectable signs of life Astrobiology 18 663 708 2018AsBio.18.663S 10.1089/ast.2017.1729
S. Seager E.L. Turner J. Schafer et al. Vegetation’s red edge: a possible spectroscopic biosignature of extraterrestrial plants Astrobiology 5 3 372 390 2005AsBio..5.372S 10.1089/ast.2005.5.372 arXiv:astro-ph/0503302 [astro-ph]
F. Selsis L. Kaltenegger J. Paillet Terrestrial exoplanets: diversity, habitability and characterization Phys. Scr. 130 10.1088/0031-8949/2008/T130/014032 014032
B.J. Seo K. Patterson K. Balasubramanian et al. S.B. Shaklan et al. Testbed demonstration of high-contrast coronagraph imaging in search for Earth-like exoplanets Techniques and Instrumentation for Detection of Exoplanets IX Bellingham SPIE 111171V 10.1117/12.2530033 11117
E. Serabyn B. Mennesson M.M. Colavita et al. The Keck interferometer nuller Astrophys. J. 748 1 55 2012ApJ..748..55S 10.1088/0004-637X/748/1/55 10.0355.02
B.A. Smith R.J. Terrile A circumstellar disk around β pictoris Science 226 4681 1421 1424 1984Sci..226.1421S 10.1126/science.226.4681.1421 1141.76360
I.A.G. Snellen F. Snik M. Kenworthy et al. Detecting life outside our solar system with a large high-contrast-imaging mission Exp. Astron. 54 2 1237 1274 2022ExA..54.1237S 10.1007/s10686-021-09803-y
R. Soummer R. Pourcelot E.H. Por et al. L.E. Coyle S. Matsuura M.D. Perrin et al. High-contrast imager for complex aperture telescopes (HiCAT): 11. System-level demonstration of the apodized pupil Lyot coronagraph with a segmented aperture in air Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave Bellingham SPIE 130921Z 10.1117/12.3018037 13092
C.C. Stark R. Belikov M.R. Bolcar et al. ExoEarth yield landscape for future direct imaging space telescopes J. Astron. Telesc. Instrum. Syst. 5 2019JATIS..5b4009S 10.1117/1.JATIS.5.2.024009 024009 arXiv:1904.11988 [astro-ph.EP]
N. Thatte M. Tecza H. Schnetler et al. HARMONI: the ELT’s first-light near-infrared and visible integral field spectrograph Messenger 10.18727/0722-6691/5215
The LUVOIR Team: The LUVOIR Mission Concept Study Final Report (2019). arXiv: 1912.06219 [astro-ph.IM]
G. Tinetti P. Drossart P. Eccleston et al. et al. H.A. MacEwen G.G. Fazio M. Lystrup et al. et al. The science of ARIEL (Atmospheric Remote-sensing Infrared Exoplanet Large-survey) Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave 99041X 10.1117/12.2232370
W.A. Traub M. Levine S. Shaklan et al. J.D. Monnier M. Schöller W.C. Danchi et al. TPF-C: status and recent progress Advances in Stellar Interferometry, International Society for Optics and Photonics Bellingham SPIE 62680T 10.1117/12.673608 6268
J.T. Trauger W.A. Traub A laboratory demonstration of the capability to image an Earth-like extrasolar planet Nature 446 7137 771 773 2007Natur.446.771T 10.1038/nature05729
V.J.H. Trees D.M. Stam Blue, white, and red ocean planets. Simulations of orbital variations in flux and polarization colors Astron. Astrophys. 626 2019A&A..626A.129T 10.1051/0004-6361/201935399 0137.46203 A129 arXiv:1904.08922 [astro-ph.EP]
A. Udalski B. Paczynski K. Zebrun et al. The optical gravitational lensing experiment. Search for planetary and low-luminosity object transits in the galactic disk. Results of 2001 campaign Acta Astron. 52 1 37 2002AcA..52..1U 10.48550/arXiv.astro-ph/0202320 arXiv:astro-ph/0202320 [astro-ph]
R.G. van Holstein J.H. Girard J. de Boer et al. Polarimetric imaging mode of vlt/sphere/irdis - II. Characterization and correction of instrumental polarization effects Astron. Astrophys. 633 10.1051/0004-6361/201834996 1477.20106 A64
S.R. Vaughan T.D. Gebhard K. Bott et al. Chasing rainbows and ocean glints: inner working angle constraints for the Habitable Worlds Observatory Mon. Not. R. Astron. Soc. 524 4 5477 5485 2023MNRAS.524.5477V 10.1093/mnras/stad2127 1546.90201 arXiv:2307.15137 [astro-ph.EP]
A. Vigan C. Fontanive M. Meyer et al. The SPHERE infrared survey for exoplanets (SHINE). III. The demographics of young giant exoplanets below 300 au with SPHERE Astron. Astrophys. 651 10.1051/0004-6361/202038107 1477.05183 A72 arXiv:2007.06573 [astro-ph.EP]
F. Vilas B.A. Smith Coronagraph for astronomical imaging and spectrophotometry Appl. Opt. 26 4 664 668 1987ApOpt.26.664V 10.1364/AO.26.000664 http://www.osapublishing.org/ao/abstract.cfm?URI=ao-26-4-664
R. Wessen C. Borden J. Ziemer et al. Space mission concept development using concept maturity levels AIAA Space 2013 Conference and Exposition 5454 10.2514/6.2013-5454 1280.00031
G.S. Wright D. Wright G.B. Goodson et al. The mid-infrared instrument for the James Webb Space Telescope, II: design and build Publ. Astron. Soc. Pac. 127 953 595 2015PASP.127.595W 10.1086/682253 1346.90260