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[en] Detecting light reflected from exoplanets by direct imaging is the next major milestone in the search for, and characterization of, an Earth twin. Due to the high-risk and cost associated with satellites and limitations imposed by the atmosphere for ground-based instruments, we propose a bottom-up approach to reach that ultimate goal with an endeavor named MAPLE. MAPLE first project is a stratospheric balloon experiment called MAPLE-50. MAPLE-50 consists of a 50 cm diameter off- axis telescope working in the near-UV. The advantages of the near-UV are a small inner working angle and an improved contrast for blue planets. Along with the sophisticated tracking system to mitigate balloon pointing errors, MAPLE-50 will have a deformable mirror, a vortex coronograph, and a self-coherent camera as a focal plane wavefront- sensor which employs an Electron Multiplying CCD (EMCCD) as the science detector. The EMCCD will allow photon counting at kHz rates, thereby closely tracking telescope and instrument-bench-induced aberrations as they evolve with time. In addition, the EMCCD will acquire the science data with almost no read noise penalty. To mitigate risk and lower costs, MAPLE-50 will at first have a single optical channel with a minimum of moving parts. The goal is to reach a few times 109 contrast in 25 h worth of flying time, allowing direct detection of Jovians around the nearest stars. Once the 50 cm infrastructure has been validated, the telescope diameter will then be increased to a 1.5 m diameter (MAPLE-150) to reach 10[SUP]10 [/SUP] contrast and have the capability to image another Earth. <P />
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Marois, Christian; National Research Council Canada (Canada)
Bradley, Colin; Univ. of Victoria (Canada)
Pazder, John; National Research Council Canada (Canada)
Nash, Reston; Univ. of Victoria (Canada)
Metchev, Stanimir; Univ. of Western Ontartio (Canada)
Mayor, M. and Queloz, D., "A jupiter-mass companion to a solar-type star," Nature 378(6555) (1995).
Marois, C., Macintosh, B., Barman, T., Zuckerman, B., Song, I., Patience, J., Lafreniere, D., and Doyon, R., "Direct imaging of multiple planets orbiting the star HR 8799," Science 322(5906), 1348 (2008).
Kalas, P., Graham, J. R., Chiang, E., Fitzgerald, M. P., Clampin, M., Kite, E. S., Stapelfeldt, K., Marois, C., and Krist, J., "Optical images of an exosolar planet 25 light-years from earth," Science 322(5906), 1345 (2008).
Lagrange, A.-M., Gratadour, D., Chauvin, G., Fusco, T., Ehrenreich, D., Mouillet, D., Rousset, G., Rouan, D., Allard, F., Gendron, E., Charton, J., Mugnier, L., Rabou, P., Montri, J., and Lacombe, F., "A probable giant planet imaged in the pictoris disk. vlt/naco deep l'-band imaging," Astronomy and Astro-physics 493(2) (2009).
Lafreniere, D., Jayawardhana, R., and van Kerkwijk, M. H., "Direct imaging and spectroscopy of a planetarymass candidate companion to a young solar analog," The Astrophysical Journal 689(2) (2008).
Quintana, E. V. and et al., "An earth-sized planet in the habitable zone of a cool star," Science 6181 (2014).
Petigura, E. A., Howard, A. W., and Marcy, G. W., "Prevalence of earth-size planets orbiting sun-like stars," Proceedings of the National Academy of Sciences 110 (2013).
Traub, W. A., Wesley, A., Chen, P., Kern, B., and Matsuo, T., "Planetscope: An exoplanet coronagraph on a balloon platform," Proceedings of the SPIE 7010 (2008).
Bryden, G. and et al., "Zodiac ii: Debris disk science from a balloon," Proceedings of the SPIE 8151 (2011).
Roberts, L. C., Bryden, G., Traub, W., Unwin, S., Trauger, J., Krist, J., Aldrich, J., Brugarolas, P., Stapelfeldt, K., Wyatt, M., Stuchlik, D., and Lanzi, J., "The debris disk explorer: A balloon-borne coronagraph for observing debris disks," Proceedings of the SPIE 8864 (2013).
Daigle, O., Djazovski, O., Laurin, D., Doyon, R., and Artigau, E., "Characterization results of emccds for extreme low-light imaging," Proceedings of the SPIE (2012).
Bifano, T. G., Perreault, J. A., and Bierden, P. A., "Micromachined deformable mirror for optical wavefront compensation," Proceedings of the SPIE 4124 (2000).
Helmbrecht, M. A., He, M., and Kempf, C. J., "High-actuator-count mems deformable mirrors," Proceedings of the SPIE 8725 (2013).
Esposito, S., Feeney, O., and Riccardi, A., "Laboratory test of a pyramid wavefront sensor," Proceedings of the SPIE 4007 (2000).
Palacios, D. M., "An optical vortex coronagraph," Proceedings of the SPIE 5905 (2005).
Singh, G., Martinache, F., Baudoz, P., Guyon, O., Matsuo, T., Jovanovic, N., and Clergeon, C., "Lyotbased low order wavefront sensor for phase-mask coronagraphs: Principle, simulations and laboratory experiments," eprint arXiv 1404(7201) (2014).
Baudoz, P., Boccaletti, A., Baudrand, J., and Rouan, D., "The self-coherent camera: A new tool for planet detection," Proceedings of the IAU Colloquium #200 (2006).
Mazoyer, J., Baudoz, P., Galicher, R., and Rousset, G., "High-contrast imaging in polychromatic light with the self-coherent camera," Astronomy and Astrophysics 564 (2014).
Mawet, D., Pueyo, L., Moody, D., Krist, J., and Serabyn, E., "The vector vortex coronagraph: sensitivity to central obscuration, low-order aberrations, chromaticism, and polarization," Proceedings of the SPIE 773914 (2010).
Mas, M., Baudoz, P., Rousset, G., and Galicher, R., "Tip-tilt estimation and correction using fqpm coronagraphic images," Astronomy and Astrophysics 539 (2012).
Noecker, C. and Kuchner, M., "Detecting exoplanets in the presence of exozodiacal dust proles," eprint arXiv 1012(0977) (2010).
Maire, A.-L., Galicher, R., Boccaletti, A., Baudoz, P., Schneider, J., Cahoy, K., Stam, D., and Traub, W., "Atmospheric characterization of cold exoplanets using a 1. 5-m coronagraphic space telescope," Astronomy & Astrophysics 541 (2012).
Spergel, D. and et al., "W-rst-2. 4: What every astronomer should know," eprint arXiv 1305(5425) (2013).
Sanders, G. H., "The thirty meter telescope (tmt): An international observatory," Journal of Astrophysics and Astronomy 34(2) (2013).
