2019ApJ...881..117S

Query : 2019ApJ...881..117S

2019ApJ...881..117S - Astrophys. J., 881, 117-117 (2019/August-3)

Two terrestrial planet families with different origins.

SWAIN M.R., ESTRELA R., SOTIN C., ROUDIER G.M. and ZELLEM R.T.

Abstract (from CDS):

The potentially important role of stellar irradiation in envelope removal for planets with diameters of 2 R⊕ has been inferred both through theoretical work and the observed bimodal distribution of small planet occurrence as a function of radius. We examined the trends for small planets in the three-dimensional radius-insolation-density space and found that the terrestrial planets divide into two distinct families based on insolation. The lower insolation family merges with terrestrial planets and small bodies in the solar system and is thus Earth-like. The higher insolation terrestrial planet family forms a bulk-density continuum with the sub-Neptunes, and is thus likely to be composed of remnant cores produced by photoevaporation. Based on the density-radius relationships, we suggest that both terrestrial families show evidence of density enhancement through collisions. Our findings highlight the important role that both photoevaporation and collisions have in determining the density of small planets.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): planetary systems - planets and satellites: composition - planets and satellites: formation - planets and satellites: terrestrial planets

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 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0

Query : 2019ApJ...881..117S

Basic data :
TRAPPIST-1 -- Low-mass Star
Other object types: otypes_help 		* (2017AJ,AP,...), IR (2MASSI,2MASSW), LM* (2000AJ), PM* (2006AJ), NIR (2MASS), MIR (WISEA)
ICRS coord. (ep=J2000) : 		23 06 29.3684948589 -05 02 29.037301866 (Optical) [ 0.0616 0.0536 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		23 03 51.0524178632 -05 18 18.821987388 [ 0.0616 0.0536 90 ]
Gal coord. (ep=J2000) : 		069.7127808375832 -56.6446053686932 [ 0.0616 0.0536 90 ]
Proper motions mas/yr : 		930.788 -479.038 [0.087 0.070 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -52.003101 [0.134416] / z(spectroscopic) -0.000173 [0.000000] / cz -52.00 [0.13]
   (NIR) A 2020AJ....160..120J
Parallaxes (mas): 		80.2123 [0.0716] A 2020yCat.1350....0G
Spectral type: 		M7.5e D 2000AJ....120.1085G
Fluxes (7) :
V 18.798 [0.082] C 2006AJ....132.1234C
R 16.466 [0.065] C 2006AJ....132.1234C
G 15.622554 [0.003093] C 2020yCat.1350....0G
I 14.024 [0.115] C 2006AJ....132.1234C
J 11.354 [0.022] C 2003yCat.2246....0C
H 10.718 [0.021] C 2003yCat.2246....0C
K 10.296 [0.023] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 8 		Display criteria :

Identifiers (16) :
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2MASS J23062928-0502285 EPIC 246199087 2MASSW J2306292-050227 TRAPPIST-1
AP J23062928-0502285 K2-112 2MUCD 12171 WISEA J230630.02-050234.1
CNS5 5691 Karmn J23064-050 TIC 278892590 Gaia DR3 2635476908753563008
EPIC 200164267 2MASSI J2306292-050227 TOI-6838 Gaia DR2 2635476908753563008

References (1306 between 1850 and 2026) (Total 1306)
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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Collections of Measurements Description of Measurements

Velocities : 5    Distance : 5    Var : 1    Fe/H : 3    Plx : 5    PM : 10    SpT : 3   

   

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Link by name to the catalogue in VizieR :

2MASS J23062928-0502285 AP J23062928-0502285 2MASSI J2306292-050227 WISEA J230630.02-050234.1 Gaia DR3 2635476908753563008
Gaia DR2 2635476908753563008

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