2021ApJ...919...50C

Query : 2021ApJ...919...50C

2021ApJ...919...50C - Astrophys. J., 919, 50-50 (2021/September-3)

GRIT: a package for structure-preserving simulations of gravitationally interacting rigid bodies.

CHEN R., LI G. and TAO M.

Abstract (from CDS):

The spin-orbit coupling of planetary systems plays an important role in the dynamics and habitability of planets. However, symplectic integrators that can accurately simulate not only how orbit affects spin but also how spin affects orbit have not been constructed for general systems. Thus, we develop symplectic Lie-group integrators to simulate systems consisting gravitationally interacting rigid bodies. A user friendly package (GRIT³) is provided and external forcings, such as tidal interactions, are also included. As a demonstration, this package is applied to Trappist-I. The results show that the differences in transit-timing variations due to spin-orbit coupling could reach a few min in 10-year measurements, and strong planetary perturbations can push Trappist-I f, g and h out of the synchronized states.

Journal keyword(s): Exoplanet dynamics - Planetary dynamics - Celestial mechanics - Few-body systems - black hole spin-flip - Oblateness

Simbad objects: 1

Full paper

View the references in ADS

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 : 2021ApJ...919...50C

Basic data :

TRAPPIST-1 -- Low-mass Star

* (2017AJ,AP,...), IR (2MASSI,2MASSW), LM* (2000AJ), PM* (2006AJ), NIR (2MASS), MIR (WISEA)

23 06 29.3684948589 -05 02 29.037301866 (Optical) [ 0.0616 0.0536 90 ] A 2020yCat.1350....0G

23 03 51.0524178632 -05 18 18.821987388 [ 0.0616 0.0536 90 ]

069.7127808375832 -56.6446053686932 [ 0.0616 0.0536 90 ]

930.788 -479.038 [0.087 0.070 90] A 2020yCat.1350....0G

V(km/s) -52.003101 [0.134416] / z(spectroscopic) -0.000173 [0.000000] / cz -52.00 [0.13] (NIR) A 2020AJ....160..120J

80.2123 [0.0716] A 2020yCat.1350....0G

M7.5e D 2000AJ....120.1085G

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

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