2021RNAAS...5..122B

Query : 2021RNAAS...5..122B

2021RNAAS...5..122B - Research Notes of the AAS, 5, 122 (2021/May-0)

Improved Constraints for the XUV Luminosity Evolution of Trappist-1.

BIRKY J., BARNES R. and FLEMING D.P.

Abstract (from CDS):

We re-examine the XUV luminosity evolution of TRAPPIST-1 utilizing new observational constraints (XUV and bolometric luminosity) from multi-epoch X-ray/UV photometry. Following the formalism presented in Fleming et al., we infer that TRAPPIST-1 maintained a saturated XUV luminosity, relative to the bolometric luminosity, of log10(LXUV/Lbol) $=-{3.03}_{-0.23}^{+0.25}$ at early times for a period of tsat$={3.14}_{-1.46}^{+2.22}$ Gyr. After the saturation phase, we find LXUV decayed over time by an exponential rate of βXUV$=-{1.17}_{-0.28}^{+0.27}$. Compared to our inferred age of the system, $\mathrm{age}={7.96}_{-1.87}^{+1.78}$ Gyr, our result for tsat suggests that there is only a ∼4% chance that TRAPPIST-1 still remains in the saturated phase today, which is significantly lower than the previous estimate of 40%. Despite this reduction in tsat, our results remain consistent in the conclusion that the TRAPPIST-1 planets likely received an extreme amount XUV energy-an estimated integrated XUV energy of ∼1030-1032 erg over the star's lifetime.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar evolution - Low mass stars - 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 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0

Query : 2021RNAAS...5..122B

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
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: 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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