Mañana, JUEVES, 24 DE ABRIL, el sistema se apagará debido a tareas habituales de mantenimiento a partir de las 9 de la mañana. Lamentamos las molestias.
Tracking Advanced Planetary Systems (TAPAS) with HARPS-N I. A multiple planetary system around the red giant star TYC 1422-614-1
Entity
UAM. Departamento de Física TeóricaPublisher
EDP SciencesDate
2015-01-01Citation
10.1051/0004-6361/201424399
Astronomy and Astrophysics 573 (2015): A36
ISSN
0004-6361 (print); 1432-0746 (online)DOI
10.1051/0004-6361/201424399Funded by
A.N., Mo.A., K.K., G.N., B.D., and Mi.A. were supported in part by the Polish Ministry of Science and Higher Education grant N N203 510938 and by the Polish National Science Centre grant UMO-2012/07/B/ST9/04415. MoA was also supported by the Polish National Science Centre grant no. UMO-2012/05/N/ST9/03836. E.V. work was supported by the Spanish Ministerio de Ciencia e Innovacion (MICINN), Plan Nacional de Astronomia y Astrofisica, under grant AYA2010-20630 and by the Marie Curie grant FP7-People-RG268111. A.W. was supported by the NASA grant NNX09AB36G. G.M. acknowledges the financial support from the Polish Ministry of Science and Higher Education through the Iuventus Plus grant IP2011 031971. D.A.G.H. acknowledges support for this work provided by the Spanish Ministry of Economy and Competitiveness under grant AYA-2011-29060Project
Gobierno de España. AYA2010-20630; info:eu-repo/grantAgreement/EC/FP7/268111; Gobierno de España AYA-2011-29060Editor's Version
http://dx.doi.org/10.1051/0004-6361/201424399Subjects
Planetary systems; Planets and satellites: detection; Planets and satellites: individual: TYC 1422 614 1; Stars: late-type; FísicaNote
Astronomy and Astrophysics 573 (2015): A36 reproduced with permission from Astronomy & Astrophysics, © ESORights
© 2015 ESOAbstract
Context. Stars that have evolved off the main sequence are crucial for expanding the frontiers of knowledge on exoplanets toward higher stellar masses and for constraining star-planet interaction mechanisms. These stars have an intrinsic activity, however, which complicates the interpretation of precise radial velocity (RV) measurements, and therefore they are often avoided in planet searches. Over the past ten years, we have monitored about 1000 evolved stars for RV variations in search for low-mass companions under the Penn State - Toruń Centre for Astronomy Planet Search program with the Hobby-Eberly Telescope. Selected prospective candidates that required higher RV precision measurements have been followed with HARPS-N at the 3.6 m Telescopio Nazionale Galileo. Aims. We aim to detect planetary systems around evolved stars, to be able to build sound statistics on the frequency and intrinsic nature of these systems, and to deliver in-depth studies of selected planetary systems with evidence of star-planet interaction processes. Methods. We obtained 69 epochs of precise RV measurements for TYC 1422-614-1 collected over 3651 days with the Hobby-Eberly Telescope, and 17 epochs of ultra-precise HARPS-N data collected over 408 days.We complemented these RV data with photometric time-series from the All Sky Automatic Survey archive. Results. We report the discovery of a multiple planetary system around the evolved K2 giant star TYC 1422-614-1. The system orbiting the 1.15 M⊙ star is composed of a planet with mass m sin i = 2:5 MJ in a 0.69 AU orbit, and a planet or brown dwarf with m sin i = 10 MJ in an orbit of 1.37 AU. The multiple planetary system orbiting TYC 1422-614-1 is the first finding of the TAPAS project, a HARPS-N monitoring of evolved planetary systems identified with the Hobby-Eberly Telescope
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Google Scholar:Niedzielski, A.
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Villaver Sobrino, Eva Gloria
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Wolszczan, A.
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Adamów, M.
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Kowalik, K.
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Maciejewski, G.
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Nowak, G.
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García-Hernández, D. A.
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Deka, B.
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Adamczyk, M.
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