K2-161b: a low-density super-Neptune on an eccentric orbit
作者： R Brahm , N Espinoza , M Rabus , A Jordán , MR Díaz
关键词:
摘要: We report the discovery of EPIC 201498078b, which was first identified as a planetary candidate from Kepler K2 photometry Campaign 14, and whose nature orbital parameters were then confirmed with precision radial velocities. 201498078b is half massive Saturn ($\rm M_P$=$0.179 \pm 0.021$ $\rm M_J$), has radius R_P$=$0.840 0.011$ R_J$, translates into bulk density $ \rm \rho_P$=$0.37 0.05$ g cm$^{-3}$. transits its slightly evolved G-type host star M_{\star}$=$1.105 0.019$ M_{\odot}$, R_P$=$1.669 0.022$ R_{\odot}$) every $11.63364 0.00010$ days presents significantly eccentric orbit ($e=0.420 0.034$). estimate relatively short circularization timescale 1.8 Gyr for planet, but given advanced age system we expect planet to be engulfed by evolving in $\sim 1$ before circularizes. The low coupled brightness ($J=9.4$) makes this one best candidates known date super-Neptune regime atmospheric characterization via transmission spectroscopy, further study transition region between ice gas giant planets.
arxiv.org
oup.com
harvard.edu
mpg.de
sci-hub.se 参考文章(108)
G. Lo Curto, W. Benz, E. Pompei, Michaël Gillon, X. Dumusque, S. Udry, F. Motalebi, A. Collier Cameron, A. Coffinet, C. Lovis, A. Wyttenbach, N. C. Santos, D. Segransan, C. Moutou, C. Mordasini, R. F. Diaz, R. Alonso, D. Pollacco, M. Mayor, F. Pepe, D. Queloz, P. Figueira, F. Bouchy, M. Deleuil, The HARPS search for southern extra-solar planets. XXXVI. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions arXiv: Earth and Planetary Astrophysics. ,vol. 1705, ,(2017) , 10.1051/0004-6361/201731173
R. Brahm, S. Ciceri, M. Rabus, N. Espinoza, F. Rojas, A. Zapata, M. I. Jones, M. G. Soto, P. Sarkis, J. S. Jenkins, M. Vuckovic, H. Drass, A. Jordan, A hot Saturn on an eccentric orbit around the giant star EPIC228754001 arXiv: Earth and Planetary Astrophysics. ,(2017) , 10.1051/0004-6361/201731478
Néstor Espinoza, Markus Rabus, Rafael Brahm, Matías Jones, Andrés Jordán, Felipe Rojas, Holger Drass, Maja Vučković, Joel D Hartman, James S Jenkins, Cristián Cortés, None, K2-113: a dense hot Jupiter transiting a solar analogue Monthly Notices of the Royal Astronomical Society. ,vol. 471, pp. 4374- 4380 ,(2017) , 10.1093/MNRAS/STX1862
George R. Ricker, Joshua N. Winn, Roland Vanderspek, David W. Latham, Gáspár Á. Bakos, Jacob L. Bean, Zachory K. Berta-Thompson, Timothy M. Brown, Lars Buchhave, Nathaniel R. Butler, R. Paul Butler, William J. Chaplin, David Charbonneau, Jørgen Christensen-Dalsgaard, Mark Clampin, Drake Deming, John Doty, Nathan De Lee, Courtney Dressing, Edward W. Dunham, Michael Endl, Francois Fressin, Jian Ge, Thomas Henning, Matthew J. Holman, Andrew W. Howard, Shigeru Ida, Jon M. Jenkins, Garrett Jernigan, John Asher Johnson, Lisa Kaltenegger, Nobuyuki Kawai, Hans Kjeldsen, Gregory Laughlin, Alan M. Levine, Douglas Lin, Jack J. Lissauer, Phillip MacQueen, Geoffrey Marcy, Peter R. McCullough, Timothy D. Morton, Norio Narita, Martin Paegert, Enric Palle, Francesco Pepe, Joshua Pepper, Andreas Quirrenbach, Stephen A. Rinehart, Dimitar Sasselov, Bun’ei Sato, Sara Seager, Alessandro Sozzetti, Keivan G. Stassun, Peter Sullivan, Andrew Szentgyorgyi, Guillermo Torres, Stephane Udry, Joel Villasenor, Transiting Exoplanet Survey Satellite Journal of Astronomical Telescopes, Instruments, and Systems. ,vol. 1, pp. 014003- 014003 ,(2014) , 10.1117/1.JATIS.1.1.014003
O. D. S. Demangeon, F. Faedi, G. Hébrard, D. J. A. Brown, S. C. C. Barros, A. P. Doyle, P. F. L. Maxted, A. Collier Cameron, K. L. Hay, J. Alikakos, D. R. Anderson, D. J. Armstrong, P. Boumis, A. S. Bonomo, F. Bouchy, L. Delrez, M. Gillon, C. A. Haswell, C. Hellier, E. Jehin, F. Kiefer, K. W. F. Lam, M. Lendl, L. Mancini, J. McCormac, A. J. Norton, H. P. Osborn, E. Palle, F. Pepe, D. L. Pollacco, J. Prieto-Arranz, D. Queloz, D. Ségransan, B. Smalley, A. H. M. J. Triaud, S. Udry, R. West, P. J. Wheatley, The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert arXiv: Earth and Planetary Astrophysics. ,(2017) , 10.1051/0004-6361/201731735
D. Ciardi, R. Brahm, M. Rabus, N. Espinoza, F. Rojas, M. R. Díaz, E. Gonzales, M. I. Jones, J. Hartman, M. G. Soto, P. Sarkis, C. Dressing, L. Hirsch, J. S. Jenkins, B. Pantoja, M. Vučković, H. Drass, R. Lachaume, I. Crossfield, A. Jordán, EPIC229426032 b and EPIC246067459 b: discovery of a highly inflated and a 'regular' pair of transiting hot Jupiters from K2 arXiv: Earth and Planetary Astrophysics. ,(2018)
M. G. Soto, J. S. Jenkins, SPECIES I: Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars arXiv: Solar and Stellar Astrophysics. ,(2018) , 10.1051/0004-6361/201731533
R Brahm, N Espinoza, A Jordán, F Rojas, P Sarkis, MR Díaz, M Rabus, H Drass, R Lachaume, MG Soto, James Stewart Jenkins, MI Jones, Th Henning, B Pantoja, M Vučković, None, K2-232 b: a transiting warm Saturn on an eccentric P = 11.2 d orbit around a V = 9.9 star Monthly Notices of the Royal Astronomical Society. ,vol. 477, pp. 2572- 2581 ,(2018) , 10.1093/MNRAS/STY795
Helen AC Giles, Daniel Bayliss, N Espinoza, R Brahm, S Blanco-Cuaresma, Avi Shporer, D Armstrong, C Lovis, S Udry, François Bouchy, M Marmier, A Jordán, Joao Bento, A Collier Cameron, R Sefako, WD Cochran, F Rojas, M Rabus, JS Jenkins, M Jones, B Pantoja, M Soto, R Jensen-Clem, DA Duev, M Salama, R Riddle, C Baranec, NM Law, None, K2-140b – an eccentric 6.57 d transiting hot Jupiter in Virgo Monthly Notices of the Royal Astronomical Society. ,vol. 475, pp. 1809- 1818 ,(2018) , 10.1093/MNRAS/STX3300
James Stewart Jenkins, M. Soto, Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue Astronomy and Astrophysics. ,vol. 615, ,(2018) , 10.1051/0004-6361/201731533