DOAJ Open Access 2023

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

Mason G. MacDougall Erik A. Petigura Gregory J. Gilbert Isabel Angelo Natalie M. Batalha +36 lainnya

Abstrak

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 R _p / 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.

Topik & Kata Kunci

Astronomy

Penulis (41)

Mason G. MacDougall

Erik A. Petigura

Gregory J. Gilbert

Isabel Angelo

Natalie M. Batalha

Corey Beard

Aida Behmard

Sarah Blunt

Casey Brinkman

Ashley Chontos

Ian J. M. Crossfield

Fei Dai

Paul A. Dalba

Courtney Dressing

Tara Fetherolf

Benjamin Fulton

Steven Giacalone

Michelle L. Hill

Rae Holcomb

Andrew W. Howard

Daniel Huber

Howard Isaacson

Stephen R. Kane

Molly Kosiarek

Jack Lubin

Andrew Mayo

Teo Močnik

Joseph M. Akana Murphy

Daria Pidhorodetska

Alex S. Polanski

Malena Rice

Paul Robertson

Lee J. Rosenthal

Arpita Roy

Ryan A. Rubenzahl

Nicholas Scarsdale

Emma V. Turtelboom

Dakotah Tyler

Judah Van Zandt

Lauren M. Weiss

Samuel W. Yee

Format Sitasi

APA MLA BibTeX

MacDougall, M.G., Petigura, E.A., Gilbert, G.J., Angelo, I., Batalha, N.M., Beard, C. et al. (2023). The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars. https://doi.org/10.3847/1538-3881/acd557

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.3847/1538-3881/acd557
Akses: Open Access ✓