2024RNAAS...8..319G

Query : 2024RNAAS...8..319G

2024RNAAS...8..319G - Research Notes of the AAS, 8, 319 (2024/December-0)

The Mass-Radius Relation for Planets in Binary Systems.

GAIDOS E., CLARK C.A. and SULLIVAN K.

Abstract (from CDS):

Stellar companion within a few hundred astronomical unit alter the structure and shorten the lifetime of protoplanetary disks, influencing planetary formation and evolution. Such systems host fewer close-in planets, and have fewer ∼2.3R⊕ “sub-Neptunes” relative to ∼1.3R⊕ “super-Earths” compared to single-star hosts, observations that can be explained by early dissipation of the gas disk. Here we construct the mass-radius diagram of 15 small (<8R⊕), well-characterized planets on S-type orbits in systems with projected separations <500 au, and show that it is indistinguishable from that of planets around single stars. This suggests that accretion of the H2-dominated envelopes of sub-Neptunes could be much faster than gas disk dissipation and limited instead by available solids for cores, or that many sub-Neptunes have envelopes of condensible volatiles such as H2O.

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

Journal keyword(s): Exoplanet astronomy - Binary stars - Exoplanet atmospheres - Exoplanet formation - Exoplanet atmospheric composition - Planet hosting stars

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TOI-3984b Pl 15 05 20.9784000702 +36 47 12.447727688           ~ 13 0

Query : 2024RNAAS...8..319G

Basic data :
TOI-3984b -- Extra-solar Planet
Other object types: otypes_help 		Pl (2023AJ), Pl? (TOI)
ICRS coord. (ep=J2000) : 		15 05 20.9784000702 +36 47 12.447727688 (Optical) [ 0.0125 0.0151 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		15 03 23.5277087439 +36 58 45.188110835 [ 0.0125 0.0151 90 ]
Gal coord. (ep=J2000) : 		060.2672411775072 +60.1782074206098 [ 0.0125 0.0151 90 ]
Proper motions mas/yr : 		-48.951 42.647 [0.016 0.020 90] A 2020yCat.1350....0G
Parallaxes (mas): 		9.1843 [0.0191] A 2020yCat.1350....0G
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NAME TOI-3984 A b TOI-3984b TOI-3984.01

References (13 between 1850 and 2026) (Total 13)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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