SIMBAD references

2024AJ....167..153R - Astron. J., 167, 153 (2024/April-0)

The TESS-Keck Survey. XII. A Dense 1.8 R⊕ Ultra-short-period Planet Possibly Clinging to a High-mean-molecular-weight Atmosphere after the First Gigayear.

RUBENZAHL R.A., DAI F., HOWARD A.W., LISSAUER J.J., VAN ZANDT J., BEARD C., GIACALONE S., MURPHY J.M.A., CHONTOS A., LUBIN J., BRINKMAN C.L., TYLER D., MacDOUGALL M.G., RICE M., DALBA P.A., MAYO A.W., WEISS L.M., POLANSKI A.S., BLUNT S., YEE S.W., HILL M.L., ANGELO I., TURTELBOOM E.V., HOLCOMB R., BEHMARD A., PIDHORODETSKA D., BATALHA N.M., CROSSFIELD I.J.M., DRESSING C., FULTON B., HUBER D., ISAACSON H., KANE S.R., PETIGURA E.A., ROBERTSON P., SCARSDALE N., MOCNIK T., FETHEROLF T., MALAVOLTA L., MORTIER A., FIORENZANO A. and PEDANI M.

Abstract (from CDS):

The extreme environments of ultra-short-period planets (USPs) make excellent laboratories to study how exoplanets obtain, lose, retain, and/or regain gaseous atmospheres. We present the confirmation and characterization of the USP TOI-1347 b, a 1.8 ± 0.1 R⊕ planet on a 0.85 day orbit that was detected with photometry from the TESS mission. We measured radial velocities of the TOI-1347 system using Keck/HIRES and HARPS-N and found the USP to be unusually massive at 11.1 ± 1.2 M⊕. The measured mass and radius of TOI-1347 b imply an Earth-like bulk composition. A thin H/He envelope (>0.01% by mass) can be ruled out at high confidence. The system is between 1 and 1.8 Gyr old; therefore, intensive photoevaporation should have concluded. We detected a tentative phase-curve variation (3σ) and a secondary eclipse (2σ) in TESS photometry, which, if confirmed, could indicate the presence of a high-mean-molecular-weight atmosphere. We recommend additional optical and infrared observations to confirm the presence of an atmosphere and investigate its composition.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet astronomy - Radial velocity - Transit photometry - Exoplanet atmospheres - Super Earths - Exoplanet detection methods

VizieR on-line data: <Available at CDS (J/AJ/167/153): table3.dat>

Simbad objects: 15

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2024AJ....167..153R and select 'bookmark this link' or equivalent in the popup menu