K2-HERMES II. Planet-candidate properties from K2 Campaigns 1-13

被引：7

作者：

Wittenmyer, Robert A. ^{[1
]}

Clark, Jake T. ^{[1
]}

Sharma, Sanjib ^{[2
]}

Stello, Dennis ^{[3
]}

Horner, Jonathan ^{[1
]}

Kane, Stephen R. ^{[4
]}

Stevens, Catherine P. ^{[5
]}

Wright, Duncan J. ^{[1
]}

Spina, Lorenzo ^{[6
]}

Asplund, Martin ^{[8
]}

Bland-Hawthorn, Joss ^{[2
]}

Buder, Sven ^{[8
,9
,10
]}

Casey, Andrew R. ^{[6
]}

De Silva, Gayandhi M. ^{[2
]}

D'Orazi, Valentina ^{[11
]}

Freeman, Ken ^{[8
]}

Kos, Janez ^{[2
]}

Lewis, Geraint ^{[2
]}

Lin, Jane ^{[2
]}

Lind, Karin ^{[10
,12
]}

Martell, Sarah L. ^{[3
,9
]}

Simpson, Jeffrey D. ^{[3
]}

Zucker, Daniel B. ^{[13
,14
]}

Zwitter, Tomaz ^{[7
]}

Cotar, Klemen ^{[7
]}

机构：

[1] Univ Southern Queensland, Ctr Astrophys, USQ Toowoomba, Toowoomba, Qld 4350, Australia

[2] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia

[3] Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia

[4] Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA 92521 USA

[5] Westminster Coll, Dept Phys, New Wilmington, PA 16172 USA

[6] Monash Univ, Monash Ctr Astrophys, Sch Phys & Astron, Monash, Vic 3800, Australia

[7] Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia

[8] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia

[9] ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT 2611, Australia

[10] Max Planck Inst Astron MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany

[11] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[12] Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden

[13] Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia

[14] Macquarie Univ, Res Ctr Astron Astrophys & Astrophoton, Sydney, NSW 2109, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 496卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

techniques: spectroscopic; planets and satellites: fundamental parameters; stars: fundamental parameters; GALAH SURVEY; SUPER-EARTH; STARS; SPECTROSCOPY; EXOPLANETS; COMPANION; SEARCH; VALLEY; IMAGES;

D O I：

10.1093/mnras/staa1528

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 complete results for planet-candidate hosts from the K2-HERMES survey, which uses the HERMES multi-object spectrograph on the Anglo-Australian Telescope to obtain R similar to 28 000 spectra for more than 30 000 K2 stars. We present complete host-star parameters and planet-candidate radii for 224 K2 candidate planets from C1-C13. Our results cast severe doubt on 30 K2 candidates, as we derive unphysically large radii, larger than 2R(Jup). This work highlights the importance of obtaining accurate, precise, and self-consistent stellar parameters for ongoing large planet search programs - something that will only become more important in the coming years, as TESS begins to deliver its own harvest of exoplanets.

引用

页码：851 / 863

页数：13

共 37 条

[1] The K2-HERMES Survey. I. Planet-candidate Properties from K2 Campaigns 1-3
Wittenmyer, Robert A.
Sharma, Sanjib
Stello, Dennis
Buder, Sven
Kos, Janez
Asplund, Martin
Duong, Ly
Lin, Jane
Lind, Karin
Ness, Melissa
Zwitter, Tomaz
Horner, Jonathan
Clark, Jake
Kane, Stephen R.
Huber, Daniel
Bland-Hawthorn, Joss
Casey, Andrew R.
De Silva, Gayandhi M.
D'Orazi, Valentina
Freeman, Ken
Martell, Sarah
Simpson, Jeffrey D.
Zucker, Daniel B.
Anguiano, Borja
Casagrande, Luca
Esdaile, James
Hon, Marc
Ireland, Michael
Kafle, Prajwal R.
Khanna, Shourya
Marshall, J. P.
Saddon, Mohd Hafiz Mohd
Traven, Gregor
Wright, Duncan
ASTRONOMICAL JOURNAL, 2018, 155 (02):
[2] Transiting planet candidate from K2 with the longest period
Giles, H. A. C.
Osborn, H. P.
Blanco-Cuaresma, S.
Lovis, C.
Bayliss, D.
Eggenberger, P.
Cameron, A. Collier
Kristiansen, M. H.
Turner, O.
Bouchy, F.
Udry, S.
ASTRONOMY & ASTROPHYSICS, 2018, 615
[3] Detection of Hundreds of New Planet Candidates and Eclipsing Binaries in K2 Campaigns 0-8
Kruse, Ethan
Agol, Eric
Luger, Rodrigo
Foreman-Mackey, Daniel
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2019, 244 (01):
[4] THE K2-ESPRINT PROJECT. II. SPECTROSCOPIC FOLLOW-UP OF THREE EXOPLANET SYSTEMS FROM CAMPAIGN 1 OF K2
Van Eylen, Vincent
Nowak, Grzegorz
Albrecht, Simon
Palle, Enric
Ribas, Ignasi
Bruntt, Hans
Perger, Manuel
Gandolfi, Davide
Hirano, Teriyuki
Sanchis-Ojeda, Roberto
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Prieto-Arranz, Jorge
Badenas, Mariona
Dai, Fei
Deeg, Hans J.
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Montanes-Rodriguez, Pilar
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Winn, Joshua N.
Sebastian, Daniel
ASTROPHYSICAL JOURNAL, 2016, 820 (01):
[5] TFAW survey II: six newly validated planets and 13 planet candidates from K2
del Ser, D.
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del Alcazar, M.
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van Belle, G. T.
Clark, C. A.
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MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 518 (01) : 669 - 690
[6] Planet Candidates from K2 Campaigns 5-8 and Follow-up Optical Spectroscopy
Petigura, Erik A.
Crossfield, Ian J. M.
Isaacson, Howard
Beichman, Charles A.
Christiansen, Jessie L.
Dressing, Courtney D.
Fulton, Benjamin J.
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Lepine, Sebastien
Schlieder, Joshua E.
Sinukoff, Evan
Yee, Samuel W.
ASTRONOMICAL JOURNAL, 2018, 155 (01):
[7] Characterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars. II. Planetary Systems Observed During Campaigns 1-7
Dressing, Courtney D.
Vanderburg, Andrew
Schlieder, Joshua E.
Crossfield, Ian J. M.
Knutson, Heather A.
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Ciardi, David R.
Fulton, Benjamin J.
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Howard, Andrew W.
Isaacson, Howard
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Petigura, Erik A.
Sinukoff, Evan
Everett, Mark
Horch, Elliott
Howell, Steve B.
ASTRONOMICAL JOURNAL, 2017, 154 (05):
[8] Sixty Validated Planets from K2 Campaigns 5-8
Livingston, John H.
Crossfield, Ian J. M.
Petigura, Erik A.
Gonzales, Erica J.
Ciardi, David R.
Beichman, Charles A.
Christiansen, Jessie L.
Dressing, Courtney D.
Henning, Thomas
Howard, Andrew W.
Isaacson, Howard
Fulton, Benjamin J.
Kosiarek, Molly
Schlieder, Joshua E.
Sinukoff, Evan
Tamura, Motohide
ASTRONOMICAL JOURNAL, 2018, 156 (06):
[9] K2-60b and K2-107b. A Sub-Jovian and a Jovian Planet from the K2 Mission
Eigmueller, Philipp
Gandolfi, Davide
Persson, Carina M.
Donati, Paolo
Fridlund, Malcolm
Csizmadia, Szilard
Barragan, Oscar
Smith, Alexis M. S.
Cabrera, Juan
Korth, Judith
Grziwa, Sascha
Prieto-Arranz, Jorge
Nespral, David
Saario, Joonas
Cochran, William D.
Cusano, Felice
Deeg, Hans J.
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Erikson, Anders
Guenther, Eike W.
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Paetzold, Martin
Rauer, Heike
ASTRONOMICAL JOURNAL, 2017, 153 (03):
[10] Predictions on the detection of the free-floating planet population with K2 and spitzer microlensing campaigns
Hamolli, L.
De Paolis, F.
Hafizi, M.
Nucita, A. A.
ASTROPHYSICAL BULLETIN, 2017, 72 (01) : 73 - 80

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