TY - JOUR
T1 - The K2-HERMES Survey. I. Planet-candidate properties from K2 campaigns 1-3
AU - Wittenmyer, Robert A.
AU - Sharma, Sanjib
AU - Stello, Dennis
AU - Buder, Sven
AU - Kos, Janez
AU - Asplund, Martin
AU - Duong, Ly
AU - Lin, Jane
AU - Lind, Karin
AU - Ness, Melissa
AU - Zwitter, Tomaz
AU - Horner, Jonathan
AU - Clark, Jake
AU - Kane, Stephen R.
AU - Huber, Daniel
AU - Bland-Hawthorn, Joss
AU - Casey, Andrew R.
AU - De Silva, Gayandhi M.
AU - D'Orazi, Valentina
AU - Freeman, Ken
AU - Martell, Sarah
AU - Simpson, Jeffrey D.
AU - Zucker, Daniel B.
AU - Anguiano, Borja
AU - Casagrande, Luca
AU - Esdaile, James
AU - Hon, Marc
AU - Ireland, Michael
AU - Kafle, Prajwal R.
AU - Khanna, Shourya
AU - Marshall, J. P.
AU - Mohd Saddon, Mohd Hafiz
AU - Traven, Gregor
AU - Wright, Duncan
N1 - Copyright 2018 The American Astronomical Society. First published in The Astronomical Journal, 155(2), 84, 2018. The original publication is available at http://www.doi.org/10.3847/1538-3881/aaa3e4, published by IOP Publishing. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - Accurate and precise radius estimates of transiting exoplanets are critical for understanding their compositions and formation mechanisms. To know the planet, we must know the host star in as much detail as possible. We present first results from the K2-HERMES project, which uses the HERMES multi-object spectrograph on the Anglo-Australian Telescope to obtain R ∼ 28000 spectra of up to 360 stars in one exposure. This ongoing project aims to derive self-consistent spectroscopic parameters for about half of K2 target stars. We present complete stellar parameters and isochrone-derived masses and radii for 46 stars hosting 57 K2 candidate planets in Campaigns 1-3. Our revised host-star radii cast severe doubt on three candidate planets: EPIC 201407812.01, EPIC 203070421.01, and EPIC 202843107.01, all of which now have inferred radii well in excess of the largest known inflated Jovian planets.
AB - Accurate and precise radius estimates of transiting exoplanets are critical for understanding their compositions and formation mechanisms. To know the planet, we must know the host star in as much detail as possible. We present first results from the K2-HERMES project, which uses the HERMES multi-object spectrograph on the Anglo-Australian Telescope to obtain R ∼ 28000 spectra of up to 360 stars in one exposure. This ongoing project aims to derive self-consistent spectroscopic parameters for about half of K2 target stars. We present complete stellar parameters and isochrone-derived masses and radii for 46 stars hosting 57 K2 candidate planets in Campaigns 1-3. Our revised host-star radii cast severe doubt on three candidate planets: EPIC 201407812.01, EPIC 203070421.01, and EPIC 202843107.01, all of which now have inferred radii well in excess of the largest known inflated Jovian planets.
KW - planets and satellites: fundamental parameters
KW - stars: fundamental parameters
KW - techniques: spectroscopic
UR - http://www.scopus.com/inward/record.url?scp=85042082918&partnerID=8YFLogxK
U2 - 10.3847/1538-3881/aaa3e4
DO - 10.3847/1538-3881/aaa3e4
M3 - Article
SN - 0004-6256
VL - 155
SP - 1
EP - 10
JO - Astronomical Journal
JF - Astronomical Journal
IS - 2
M1 - 84
ER -