Reference : NGTS-4b: A sub-Neptune Transiting in the Desert
E-prints/Working papers : Already available on another site
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/233289
NGTS-4b: A sub-Neptune Transiting in the Desert
English
West, Richard G. mailto [> >]
Gillen, Edward [> >]
Bayliss, Daniel [> >]
Burleigh, Matthew R. [> >]
Delrez, Laetitia [> >]
Günther, Maximilian N. [> >]
Hodgkin, Simon T. [> >]
Jackman, James A. G. [> >]
Jenkins, James S. [> >]
King, George [> >]
McCormac, James [> >]
Nielsen, Louise D. [> >]
Raynard, Liam [> >]
Smith, Alexis M. S. [> >]
Soto, Maritza [> >]
Turner, Oliver [> >]
Wheatley, Peter J. [> >]
Almleaky, Yaseen [> >]
Armstrong, David J. [> >]
Belardi, Claudia [> >]
Bouchy, François [> >]
Briegal, Joshua T. [> >]
Burdanov, Artem mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Cabrera, Juan [> >]
Casewel, Sarah L. [> >]
Chaushev, Alexander [> >]
Chazelas, Bruno [> >]
Chote, Paul [> >]
Cooke, Benjamin F. [> >]
Csizmadia, Szilard [> >]
Ducrot, Elsa mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Eigmüller, Philipp [> >]
Erikson, Anders [> >]
Foxell, Emma [> >]
Gänsicke, Boris T. [> >]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Goad, Michael R. [> >]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Lambert, Gregory [> >]
Longstaff, Emma S. [> >]
Louden, Tom [> >]
Moyano, Maximiliano [> >]
Murray, Catriona [> >]
Pollacco, Don [> >]
Queloz, Didier [> >]
Rauer, Heike [> >]
Sohy, Sandrine mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Thompson, Samantha J. [> >]
Udry, Stéphane [> >]
Walker, Simon R. [> >]
Watson, Christopher A. [> >]
1-Sep-2018
No
[en] Astrophysics - Earth and Planetary Astrophysics
[en] We report the discovery of NGTS-4b, a sub-Neptune-sized planet transiting a 13th magnitude K-dwarf in a 1.34d orbit. NGTS-4b has a mass M=$20.6\pm3.0$M_E and radius R=$3.18\pm0.26$R_E, which places it well within the so-called "Neptunian Desert". The mean density of the planet ($3.45\pm0.95$g/cm^3) is consistent with a composition of 100% H$_2$O or a rocky core with a volatile envelope. NGTS-4b is likely to suffer significant mass loss due to relatively strong EUV/X-ray irradiation. Its survival in the Neptunian desert may be due to an unusually high core mass, or it may have avoided the most intense X-ray irradiation by migrating after the initial activity of its host star had subsided. With a transit depth of $0.13\pm0.02$%, NGTS-4b represents the shallowest transiting system ever discovered from the ground, and is the smallest planet discovered in a wide-field ground-based photometric survey.
http://hdl.handle.net/2268/233289
http://adsabs.harvard.edu/abs/2018arXiv180900678W
Submitted to MNRAS
https://arxiv.org/pdf/1809.00678.pdf

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