Dai, Fei, Winn, Joshua N., Gandolfi, Davide ORCID: 0000-0001-8627-9628, Wang, Sharon X., Teske, Johanna K., Burt, Jennifer ORCID: 0000-0002-0040-6815, Albrecht, Simon, Barragan, Oscar ORCID: 0000-0003-0563-0493, Cochran, William D., Endl, Michael, Fridlund, Malcolm ORCID: 0000-0002-0855-8426, Hatzes, Artie P., Hirano, Teruyuki, Hirsch, Lea A., Johnson, Marshall C., Justesen, Anders Bo ORCID: 0000-0002-0174-2466, Livingston, John ORCID: 0000-0002-4881-3620, Persson, Carina M., Prieto-Arranz, Jorge, Vanderburg, Andrew ORCID: 0000-0001-7246-5438, Alonso, Roi ORCID: 0000-0001-8462-8126, Antoniciello, Giuliano, Arriagada, Pamela, Butler, R. P., Cabrera, Juan ORCID: 0000-0001-6653-5487, Crane, Jeffrey D., Cusano, Felice ORCID: 0000-0003-2910-6565, Csizmadia, Szilard, Deeg, Hans ORCID: 0000-0003-0047-4241, Dieterich, Sergio B., Eigmueller, Philipp, Erikson, Anders, Everett, Mark E., Fukui, Akihiko ORCID: 0000-0002-4909-5763, Grziwa, Sascha, Guenther, Eike W., Henry, Gregory W., Howell, Steve B., Johnson, John Asher, Korth, Judith ORCID: 0000-0002-0076-6239, Kuzuhara, Masayuki, Narita, Norio, Nespral, David, Nowak, Grzegorz ORCID: 0000-0002-7031-7754, Palle, Enric, Paetzold, Martin, Rauer, Heike, Montanes Rodriguez, Pilar, Shectman, Stephen A., Smith, Alexis M. S., Thompson, Ian B., Van Eylen, Vincent ORCID: 0000-0001-5542-8870, Williamson, Michael W. and Wittenmyer, Robert A. (2017). The Discovery and Mass Measurement of a New Ultra-short-period Planet: EPIC 228732031b. Astron. J., 154 (6). BRISTOL: IOP PUBLISHING LTD. ISSN 1538-3881

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Abstract

We report the discovery of a new ultra-short-period planet and summarize the properties of all such planets for which the mass and radius have been measured. The new planet, EPIC. 228732031b, was discovered in K2 Campaign 10. It has a radius of 1.81(-0.12)(+0.16) R-circle plus and orbits a G dwarf with a period of 8.9 hr. Radial velocities obtained with Magellan/PFS and TNG/HARPS-N show evidence for stellar activity along with orbital motion. We determined the planetary mass using two different methods: (1) the floating chunk offset method, based only on changes in velocity observed on the same night; and (2) a Gaussian process regression based on both the radial velocity and photometric time series. The results are consistent and lead to a mass measurement of 6.5. +/- 1.6 M-circle plus and a mean density of 6.0(-2.7)(+3.0) g cm(-3).

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Dai, FeiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Winn, Joshua N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gandolfi, DavideUNSPECIFIEDorcid.org/0000-0001-8627-9628UNSPECIFIED
Wang, Sharon X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Teske, Johanna K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burt, JenniferUNSPECIFIEDorcid.org/0000-0002-0040-6815UNSPECIFIED
Albrecht, SimonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barragan, OscarUNSPECIFIEDorcid.org/0000-0003-0563-0493UNSPECIFIED
Cochran, William D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Endl, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fridlund, MalcolmUNSPECIFIEDorcid.org/0000-0002-0855-8426UNSPECIFIED
Hatzes, Artie P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hirano, TeruyukiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hirsch, Lea A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johnson, Marshall C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Justesen, Anders BoUNSPECIFIEDorcid.org/0000-0002-0174-2466UNSPECIFIED
Livingston, JohnUNSPECIFIEDorcid.org/0000-0002-4881-3620UNSPECIFIED
Persson, Carina M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prieto-Arranz, JorgeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vanderburg, AndrewUNSPECIFIEDorcid.org/0000-0001-7246-5438UNSPECIFIED
Alonso, RoiUNSPECIFIEDorcid.org/0000-0001-8462-8126UNSPECIFIED
Antoniciello, GiulianoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Arriagada, PamelaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Butler, R. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cabrera, JuanUNSPECIFIEDorcid.org/0000-0001-6653-5487UNSPECIFIED
Crane, Jeffrey D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cusano, FeliceUNSPECIFIEDorcid.org/0000-0003-2910-6565UNSPECIFIED
Csizmadia, SzilardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deeg, HansUNSPECIFIEDorcid.org/0000-0003-0047-4241UNSPECIFIED
Dieterich, Sergio B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eigmueller, PhilippUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Erikson, AndersUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Everett, Mark E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fukui, AkihikoUNSPECIFIEDorcid.org/0000-0002-4909-5763UNSPECIFIED
Grziwa, SaschaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guenther, Eike W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henry, Gregory W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Howell, Steve B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johnson, John AsherUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korth, JudithUNSPECIFIEDorcid.org/0000-0002-0076-6239UNSPECIFIED
Kuzuhara, MasayukiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Narita, NorioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nespral, DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nowak, GrzegorzUNSPECIFIEDorcid.org/0000-0002-7031-7754UNSPECIFIED
Palle, EnricUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paetzold, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rauer, HeikeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Montanes Rodriguez, PilarUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shectman, Stephen A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smith, Alexis M. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thompson, Ian B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Van Eylen, VincentUNSPECIFIEDorcid.org/0000-0001-5542-8870UNSPECIFIED
Williamson, Michael W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wittenmyer, Robert A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-210000
DOI: 10.3847/1538-3881/aa9065
Journal or Publication Title: Astron. J.
Volume: 154
Number: 6
Date: 2017
Publisher: IOP PUBLISHING LTD
Place of Publication: BRISTOL
ISSN: 1538-3881
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Externe Einrichtungen > An-Institute > Associated Institutes of the Faculty of Mathematics and Natural Sciences > Rhenish Institute for Environmental Research - RIU
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
COOL DWARF STARS; SOLAR-TYPE STARS; RADIAL-VELOCITY; BALMER LINES; SPACED DATA; SEARCH; KEPLER; SYSTEM; CALIBRATION; PARAMETERSMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/21000

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