The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars

MacDougall, Mason G. and Petigura, Erik A. and Gilbert, Gregory J. and Angelo, Isabel and Batalha, Natalie M. and Beard, Corey and Behmard, Aida and Blunt, Sarah and Brinkman, Casey and Chontos, Ashley and Crossfield, Ian J. M. and Dai, Fei and Dalba, Paul A. and Dressing, Courtney and Fetherolf, Tara and Fulton, Benjamin and Giacalone, Steven and Hill, Michelle L. and Holcomb, Rae and Howard, Andrew W. and Huber, Daniel and Isaacson, Howard and Kane, Stephen R. and Kosiarek, Molly and Lubin, Jack and Mayo, Andrew and Močnik, Teo and Akana Murphy, Joseph M. and Pidhorodetska, Daria and Polanski, Alex S. and Rice, Malena and Robertson, Paul and Rosenthal, Lee J. and Roy, Arpita and Rubenzahl, Ryan A. and Scarsdale, Nicholas and Turtelboom, Emma V. and Tyler, Dakotah and Van Zandt, Judah and Weiss, Lauren M. and Yee, Samuel W. (2023) The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars. The Astronomical Journal, 166 (1). p. 33. ISSN 0004-6256

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Abstract

We present the stellar and planetary properties for 85 TESS Objects of Interest (TOIs) hosting 108 planet candidates that compose the TESS-Keck Survey (TKS) sample. We combine photometry, high-resolution spectroscopy, and Gaia parallaxes to measure precise and accurate stellar properties. We then use these parameters as inputs to a light-curve processing pipeline to recover planetary signals and homogeneously fit their transit properties. Among these transit fits, we detect significant transit-timing variations among at least three multiplanet systems (TOI-1136, TOI-1246, TOI-1339) and at least one single-planet system (TOI-1279). We also reduce the uncertainties on planet-to-star radius ratios Rp/R⋆ across our sample, from a median fractional uncertainty of 8.8% among the original TOI Catalog values to 3.0% among our updated results. With this improvement, we are able to recover the Radius Gap among small TKS planets and find that the topology of the Radius Gap among our sample is broadly consistent with that measured among Kepler planets. The stellar and planetary properties presented here will facilitate follow-up investigations of both individual TOIs and broader trends in planet properties, system dynamics, and the evolution of planetary systems.

Item Type: Article
Subjects: Archive Digital > Physics and Astronomy
Depositing User: Unnamed user with email support@archivedigit.com
Date Deposited: 15 Nov 2023 07:45
Last Modified: 15 Nov 2023 07:45
URI: http://eprints.ditdo.in/id/eprint/1673

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