The TESS-Keck Survey: Science Goals and Target Selection

Ashley Chontos, Joseph M.Akana Murphy, Mason G. MacDougall, Tara Fetherolf, Judah Van Zandt, Ryan A. Rubenzahl, Corey Beard, Daniel Huber, Natalie M. Batalha, Ian J.M. Crossfield, Courtney D. Dressing, Benjamin Fulton, Andrew W. Howard, Howard Isaacson, Stephen R. Kane, Erik A. Petigura, Paul Robertson, Arpita Roy, Lauren M. Weiss, Aida BehmardFei Dai, Paul A. Dalba, Steven Giacalone, Michelle L. Hill, Jack Lubin, Andrew Mayo, Teo Močnik, Alex S. Polanski, Lee J. Rosenthal, Nicholas Scarsdale, Emma V. Turtelboom, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Samuel N. Quinn, Natalia M. Guerrero, Karen A. Collins, David R. Ciardi, Avi Shporer, Robert F. Goeke, Alan M. Levine, Eric B. Ting, Allyson Bieryla, Kevin I. Collins, John F. Kielkopf, Khalid Barkaoui, Paul Benni, Emma Esparza-Borges, Dennis M. Conti, Matthew J. Hooton, Taiki Kagetani, Didier Laloum, Giuseppe Marino, Bob Massey, Felipe Murgas, Riccardo Papini, Richard P. Schwarz, Gregor Srdoc, Chris Stockdale, Gavin Wang, Justin M. Wittrock, Yujie Zou

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The Kepler and TESS missions have demonstrated that planets are ubiquitous. However, the success of these missions heavily depends on ground-based radial velocity (RV) surveys, which combined with transit photometry can yield bulk densities and orbital properties. While most Kepler host stars are too faint for detailed follow-up observations, TESS is detecting planets orbiting nearby bright stars that are more amenable to RV characterization. Here, we introduce the TESS-Keck Survey (TKS), an RV program using ∼100 nights on Keck/HIRES to study exoplanets identified by TESS. The primary survey aims are investigating the link between stellar properties and the compositions of small planets; studying how the diversity of system architectures depends on dynamical configurations or planet multiplicity; identifying prime candidates for atmospheric studies with JWST; and understanding the role of stellar evolution in shaping planetary systems. We present a fully automated target selection algorithm, which yielded 103 planets in 86 systems for the final TKS sample. Most TKS hosts are inactive, solar-like, main-sequence stars (4500 K ≤ T eff <6000 K) at a wide range of metallicities. The selected TKS sample contains 71 small planets (R p ≤ 4 R), 11 systems with multiple transiting candidates, six sub-day-period planets and three planets that are in or near the habitable zone (S inc ≤ 10 S) of their host star. The target selection described here will facilitate the comparison of measured planet masses, densities, and eccentricities to predictions from planet population models. Our target selection software is publicly available and can be adapted for any survey that requires a balance of multiple science interests within a given telescope allocation.

Original languageEnglish (US)
Article number297
JournalAstronomical Journal
Volume163
Issue number6
DOIs
StatePublished - Jun 1 2022

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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