The TESS-Keck Survey. XVI. Mass Measurements for 12 Planets in Eight Systems

Akana Murphy, Joseph M. and Batalha, Natalie M. and Scarsdale, Nicholas and Isaacson, Howard and Ciardi, David R. and Gonzales, Erica J. and Giacalone, Steven and Twicken, Joseph D. and Dattilo, Anne and Fetherolf, Tara and Rubenzahl, Ryan A. and Crossfield, Ian J. M. and Dressing, Courtney D. and Fulton, Benjamin and Howard, Andrew W. and Huber, Daniel and Kane, Stephen R. and Petigura, Erik A. and Robertson, Paul and Roy, Arpita and Weiss, Lauren M. and Beard, Corey and Chontos, Ashley and Dai, Fei and Rice, Malena and Van Zandt, Judah and Lubin, Jack and Blunt, Sarah and Polanski, Alex S. and Behmard, Aida and Dalba, Paul A. and Hill, Michelle L. and Rosenthal, Lee J. and Brinkman, Casey L. and Mayo, Andrew W. and Turtelboom, Emma V. and Angelo, Isabel and Močnik, Teo and MacDougall, Mason G. and Pidhorodetska, Daria and Tyler, Dakotah and Kosiarek, Molly R. and Holcomb, Rae and Louden, Emma M. and Hirsch, Lea A. and Gilbert, Emily A. and Anderson, Jay and Valenti, Jeff A. (2023) The TESS-Keck Survey. XVI. Mass Measurements for 12 Planets in Eight Systems. The Astronomical Journal, 166 (4). p. 153. ISSN 0004-6256

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Abstract

With JWST's successful deployment and unexpectedly high fuel reserves, measuring the masses of sub-Neptunes transiting bright, nearby stars will soon become the bottleneck for characterizing the atmospheres of small exoplanets via transmission spectroscopy. Using a carefully curated target list and observations from more than 2 yr of APF-Levy and Keck-HIRES Doppler monitoring, the TESS-Keck Survey is working toward alleviating this pressure. Here we present mass measurements for 11 transiting planets in eight systems that are particularly suited to atmospheric follow-up with JWST. We also report the discovery and confirmation of a temperate super-Jovian-mass planet on a moderately eccentric orbit. The sample of eight host stars, which includes one subgiant, spans early-K to late-F spectral types (Teff = 5200–6200 K). We homogeneously derive planet parameters using a joint photometry and radial velocity modeling framework, discuss the planets' possible bulk compositions, and comment on their prospects for atmospheric characterization.

Item Type: Article
Subjects: European Scholar > Physics and Astronomy
Depositing User: Managing Editor
Date Deposited: 10 Nov 2023 04:59
Last Modified: 10 Nov 2023 04:59
URI: http://article.publish4promo.com/id/eprint/2848

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