Tracking Advanced Planetary Systems (TAPAS) with HARPS-N I. A multiple planetary system around the red giant star TYC 1422-614-1

A. Niedzielski, E. Villaver, Alexander Wolszczan, M. Adamów, K. Kowalik, G. Maciejewski, G. Nowak, D. A. García-Hernández, B. Deka, M. Adamczyk

Research output: Contribution to journalArticle

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Abstract

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 M J in a 0.69 AU orbit, and a planet or brown dwarf with m sin i = 10 M J 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.

Original languageEnglish (US)
Article numberA36
JournalAstronomy and Astrophysics
Volume573
DOIs
StatePublished - Jan 1 2015

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red giant stars
planetary systems
planets
radial velocity
planet
stars
telescopes
velocity measurement
time measurement
orbits
giant stars
M stars
extrasolar planets
astronomy
stellar mass
sky
statistics
interactions
time series
acoustics

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Niedzielski, A. ; Villaver, E. ; Wolszczan, Alexander ; Adamów, M. ; Kowalik, K. ; Maciejewski, G. ; Nowak, G. ; García-Hernández, D. A. ; Deka, B. ; Adamczyk, M. / Tracking Advanced Planetary Systems (TAPAS) with HARPS-N I. A multiple planetary system around the red giant star TYC 1422-614-1. In: Astronomy and Astrophysics. 2015 ; Vol. 573.
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abstract = "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 M J in a 0.69 AU orbit, and a planet or brown dwarf with m sin i = 10 M J 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.",
author = "A. Niedzielski and E. Villaver and Alexander Wolszczan and M. Adam{\'o}w and K. Kowalik and G. Maciejewski and G. Nowak and Garc{\'i}a-Hern{\'a}ndez, {D. A.} and B. Deka and M. Adamczyk",
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doi = "10.1051/0004-6361/201424399",
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Niedzielski, A, Villaver, E, Wolszczan, A, Adamów, M, Kowalik, K, Maciejewski, G, Nowak, G, García-Hernández, DA, Deka, B & Adamczyk, M 2015, 'Tracking Advanced Planetary Systems (TAPAS) with HARPS-N I. A multiple planetary system around the red giant star TYC 1422-614-1', Astronomy and Astrophysics, vol. 573, A36. https://doi.org/10.1051/0004-6361/201424399

Tracking Advanced Planetary Systems (TAPAS) with HARPS-N I. A multiple planetary system around the red giant star TYC 1422-614-1. / Niedzielski, A.; Villaver, E.; Wolszczan, Alexander; Adamów, M.; Kowalik, K.; Maciejewski, G.; Nowak, G.; García-Hernández, D. A.; Deka, B.; Adamczyk, M.

In: Astronomy and Astrophysics, Vol. 573, A36, 01.01.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tracking Advanced Planetary Systems (TAPAS) with HARPS-N I. A multiple planetary system around the red giant star TYC 1422-614-1

AU - Niedzielski, A.

AU - Villaver, E.

AU - Wolszczan, Alexander

AU - Adamów, M.

AU - Kowalik, K.

AU - Maciejewski, G.

AU - Nowak, G.

AU - García-Hernández, D. A.

AU - Deka, B.

AU - Adamczyk, M.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - 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 M J in a 0.69 AU orbit, and a planet or brown dwarf with m sin i = 10 M J 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.

AB - 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 M J in a 0.69 AU orbit, and a planet or brown dwarf with m sin i = 10 M J 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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