A Catalog of Cool Dwarf Targets for the Transiting Exoplanet Survey Satellite

Philip S. Muirhead, Courtney D. Dressing, Andrew W. Mann, Bárbara Rojas-Ayala, Sébastien Lépine, Martin Paegert, Nathan De Lee, Ryan Oelkers

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

We present a catalog of cool dwarf targets (V - > J 2.7, Teff≳4000 K) and their stellar properties for the upcoming Transiting Exoplanet Survey Satellite (TESS), for the purpose of determining which cool dwarfs should be observed using two minute observations. TESS has the opportunity to search tens of thousands of nearby, cool, late K- and M-type dwarfs for transiting exoplanets, an order of magnitude more than current or previous transiting exoplanet surveys, such as Kepler, K2, and ground-based programs. This necessitates a new approach to choosing cool dwarf targets. Cool dwarfs are chosen by collating parallax and proper motion catalogs from the literature and subjecting them to a variety of selection criteria. We calculate stellar parameters and TESS magnitudes using the best possible relations from the literature while maintaining uniformity of methods for the sake of reproducibility. We estimate the expected planet yield from TESS observations using statistical results from the Kepler mission, and use these results to choose the best targets for two minute observations, optimizing for small planets for which masses can conceivably be measured using follow-up Doppler spectroscopy by current and future Doppler spectrometers. The catalog is available in machine readable format and is incorporated into the TESS Input Catalog and TESS Candidate Target List until a more complete and accurate cool dwarf catalog identified by ESA's Gaia mission can be incorporated.

Original languageEnglish
Article number180
JournalAstronomical Journal
Volume155
Issue number4
DOIs
Publication statusPublished - 1 Apr 2018

Keywords

  • mass
  • planetary systems
  • stars: fundamental parameters
  • stars: late-type
  • stars: low

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'A Catalog of Cool Dwarf Targets for the Transiting Exoplanet Survey Satellite'. Together they form a unique fingerprint.

Cite this