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