methods: data analysis; methods: observational; techniques: radial velocities; techniques: spectroscopic; stars: individual: HD 175370 (KIC 007940959); planetary systems
Abstract :
[en] We report on the discovery of a planetary companion candidate with a minimum mass M sin i = 4.6 ± 1.0 M[SUB]Jupiter[/SUB] orbiting the K2 III giant star HD 175370 (KIC 007940959). This star was a target in our programme to search for planets around a sample of 95 giant stars observed with Kepler. This detection was made possible using precise stellar radial velocity measurements of HD 175370 taken over five years and four months using the coudé echelle spectrograph of the 2-m Alfred Jensch Telescope and the fibre-fed echelle spectrograph High Efficiency and Resolution Mercator Echelle Spectrograph of the 1.2-m Mercator Telescope. Our radial velocity measurements reveal a periodic (349.5 ± 4.5 d) variation with a semi-amplitude K = 133 ± 25 m s[SUP]- 1[/SUP], superimposed on a long-term trend. A low-mass stellar companion with an orbital period of ˜88 yr in a highly eccentric orbit and a planet in a Keplerian orbit with an eccentricity e = 0.22 are the most plausible explanation of the radial velocity variations. However, we cannot exclude the existence of stellar envelope pulsations as a cause for the low-amplitude radial velocity variations and only future continued monitoring of this system may answer this uncertainty. From Kepler photometry, we find that HD 175370 is most likely a low-mass red giant branch or asymptotic giant branch star.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hrudková, M.; Isaac Newton Group of Telescopes, Apartado de Correos 321, Santa Cruz de La Palma E-38700, Spain
Hekker, S.; Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, Göttingen D-37077, Germany ; Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, Aarhus C DK-8000, Denmark
Hartmann, M.; Thüringer Landessternwarte Tautenburg, Sternwarte 5, Tautenburg D-07778, Germany
Tkachenko, A.; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium
Prins, S.; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium
Van Winckel, H.; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium
De Nutte, R.; Royal Observatory of Belgium, 3 Avenue Circulaire, Brussel B-1180, Belgium
Dumortier, L.; Royal Observatory of Belgium, 3 Avenue Circulaire, Brussel B-1180, Belgium
Frémat, Y.; Royal Observatory of Belgium, 3 Avenue Circulaire, Brussel B-1180, Belgium
Hensberge, H.; Royal Observatory of Belgium, 3 Avenue Circulaire, Brussel B-1180, Belgium
Jorissen, A.; Institut d' Astronomie et d' Astrophysique, Université Libre de Bruxelles, CP 226, Boulevard du Triomphe, Bruxelles B-1050, Belgium
Lampens, P.; Royal Observatory of Belgium, 3 Avenue Circulaire, Brussel B-1180, Belgium
Laverick, M.; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium
Lombaert, R.; Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden ; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium
Pápics, P. I.; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium
Raskin, G.; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium
Sódor, Á.; Royal Observatory of Belgium, 3 Avenue Circulaire, Brussel B-1180, Belgium ; Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budapest 1121, Hungary
Thoul, Anne ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Van Eck, S.; Institut d' Astronomie et d' Astrophysique, Université Libre de Bruxelles, CP 226, Boulevard du Triomphe, Bruxelles B-1050, Belgium
Waelkens, C.; Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D bus 2401, Leuven B-3001, Belgium)
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Döllinger M. P., Hatzes A. P., Pasquini L., Guenther E. W., Hartmann M., Girardi L., 2009, A&A, 499, 935.
Endl M., Kürster M., Els S., 2000, A&A, 362, 585.
Famaey B., Jorissen A., Luri X., Mayor M., Udry S., Dejonghe H., Turon C., 2005, A&A, 430, 165.
Frandsen S. et al., 2002, A&A, 394, L5.
Frink S., Quirrenbach A., Fischer D., Röser S., Schilbach E., 2001, PASP, 113, 173.
Frink S., Mitchell D. S., Quirrenbach A., Fischer D. A., Marcy G.W., Butler R. P., 2002, ApJ, 576, 478.
García R. A. et al., 2011, MNRAS, 414, L6.
Gilliland R. L. et al., 2010, PASP, 122, 131.
Gray D. F., 1983, PASP, 95, 252.
Gray D. F., 1988, Lectures on Spectral-Line Analysis: F, G, and K Stars. Ontario, Canada
Guggenberger E., Hekker S., Basu S., Bellinger E., 2016, MNRAS, 460, 4277.
Gustafsson B., Edvardsson B., Eriksson K., Jørgensen U. G., Nordlund Å., Plez B., 2008, A&A, 486, 951.
Hatzes A. P., 2002, Astron. Nachr., 323, 392.
Hatzes A. P., Cochran W. D., 1993, ApJ, 413, 339.
Hatzes A. P., Cochran W. D., 1994, ApJ, 432, 763.
Hatzes A. P., CochranW. D., Endl M., McArthur B., Paulson D. B., Walker G. A. H., Campbell B., Yang S., 2003, ApJ, 599, 1383.
Hatzes A. P. et al., 2015, A&A, 580, 31.
Hekker S., Reffert S., Quirrenbach A., Mitchell D. S., Fischer D. A., Marcy G. W., Butler R. P., 2006, A&A, 454, 943.
Hekker S., Snellen I. A. G., Aerts C., Quirrenbach A., Reffert S., Mitchell D. S., 2008, A&A, 480, 215.
Hekker S. et al., 2010, MNRAS, 402, 2049.
Hekker S., Elsworth Y., Mosser B., Kallinger T., Basu S., Chaplin W. J., Stello D., 2013, A&A, 556, A59.
Horne J. H., Baliunas S. L., 1986, ApJ, 302, 757.
Howard A. W. et al., 2012, ApJS, 201, 15.
Huber D. et al., 2010, ApJ, 723, 1607.
Huber D. et al., 2013, Science, 342, 331.
Høg E. et al., 2000, A&A, 355, L27.
Johnson J. A., Aller K. M., Howard A. W., Crepp J. R., 2010, PASP, 122, 905.
Jorissen A. et al., 2016a, A&A, 586, 158.
Jorissen A. et al., 2016b, A&A, 586, 159.
Kennedy G. M., Kenyon S. J., 2008, ApJ, 673, 502.
Kjeldsen H., Bedding T. R., 1995, A&A, 293, 87.
Koch D. G. et al., 2010, ApJ, 713, L79.
Kürster M., Schmitt J. H. M. M., Cutispoto G., Dennerl K., 1997, A&A, 320, 831.
Kurucz R., 1993, ATLAS9 Stellar Atmosphere Programs and 2 km s-1. Grid.KuruczCD-ROMNo. 13, Smithsonian Astrophysical Observatory, Cambridge
Larson A. M., Irwin A.W., Yang S. L. S., Goodenough C., Walker G. A. H., Walker A. R., Bohlender D. A., 1993, PASP, 105, 332.
Lebreton Y., Goupil M. J., 2014, A&A, 569, 21.
Lee B. C., Han I., Park M. G., 2013, A&A, 549, 2.
Lehmann H. et al., 2011, A&A, 526, 124.
Lenz P., Breger M., 2005, Commun. Asteroseismology, 146, 53.
Lillo-Box J. et al., 2014, A&A, 562, 109.
Lloyd J. P., 2011, ApJ, 739, L49.
Luck R. E., Heiter U., 2007, AJ, 133, 2464.
McArthur B., Jefferys W., McCartney J., 1994, A&AS, 184, 2804.
McDonald I., Zijlstra A. A., Boyer M. L., 2012, MNRAS, 427, 343.
Martínez Fiorenzano A. F., Gratton R. G., Desidera S., Cosentino R., Endl M., 2005, A&A, 442, 775.
Mazeh T., Tamuz O., Zucker S., 2007, in Afonso C., Weldrake D., Henning Th., eds, ASP Conf. Ser. Vol. 366, Transiting Extrasolar Planets. Astron. Soc. Pac., San Francisco, p. 119.
Morais M. H. M., Correia A. C. M., 2008, A&A, 491, 899.
Mosser B. et al., 2014, A&A, 572, L5.
Nowak G., Niedzielski A., Wolszczan A., Adamów M., Maciejewski G., 2013, ApJ, 770, 53.
Ortiz M. et al., 2015, A&A, 573, L60.
Otor O. J. et al., 2016, preprint (arXiv:1608.03627)
Pasquini L., Pallavicini R., Pakull M., 1988, A&A, 191, 253.
Pietrinferni A., Cassisi S., Salaris M., Castelli F., 2004, ApJ, 612, 168.
Quinn S. N. et al., 2015, ApJ, 803, 49.
Ramm D. J., Pourbaix D., Hearnshaw J. B., Komonjinda S., 2009, MNRAS, 394, 1695.
Raskin G. et al., 2011, A&A, 526, A69.
Rowe J. F. et al., 2014, ApJ, 784, 45.
Saar S. H., Donahue R. A., 1997, ApJ, 485, 319.
Scargle J. D., 1982, ApJ 263, 835.
Stello D. et al., 2013, ApJ, 765, L41.
Tsymbal V., 1996, in Adelman S. J., Kupka F., WeissW.W., eds, ASP Conf. Ser. Vol. 108, M.A.S.S.; Model Atmospheres and Spectrum Synthesis. Astron. Soc. Pac., San Francisco, p. 198.
Valenti J. A., Butler R. P., Marcy G. W., 1995, PASP, 107, 966.
van Leeuwen F., 2007, A&A, 474, 653.
van Eylen V. et al., 2016, preprint (arXiv:1605.09180)
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.