1999ApJ...514..109G

Query : 1999ApJ...514..109G

1999ApJ...514..109G - Astrophys. J., 514, 109-118 (1999/March-3)

Tidal shocking by extended mass distributions.

GNEDIN O.Y., HERNQUIST L. and OSTRIKER J.P.

Abstract (from CDS):

We derive expressions for the tidal field exerted by a spherically symmetric galaxy having an extended mass distribution and use our analysis to calculate tidal heating of stars in a globular cluster or a satellite galaxy. We integrate the tidal force over accurate orbits in various models for the primary by using the impulse approximation, coupled with adiabatic corrections that allow for time variation of the perturbation. We verify the results with direct N-body simulations, and we also compare them with the conventional straight-path approximation. Heating on highly eccentric orbits dominates, since adiabatic corrections strictly prohibit energy changes on low-eccentricity orbits. The results are illustrated for globular cluster NGC 6712. For the orbital eccentricities higher than 0.9, the future lifetime of NGC 6712 is less than 10¹⁰ yr. Our analysis can be used to study tidal interactions of star clusters andgalaxies in a semianalytical manner.

Abstract Copyright: ∼

Journal keyword(s): Celestial Mechanics, Stellar Dynamics - Galaxies: Interactions - Galaxies: Kinematics and Dynamics - Galaxies: Star Clusters

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	NGC 6712	GlC	18 53 04.32	-08 42 21.5						~	550	0

Query : 1999ApJ...514..109G

Basic data :

NGC 6712 -- Globular Cluster

GlC (2013A&A,GCl), Cl* (C,[KPS2012]), * (CSI,GCRV), Rad (AO)

18 53 04.32 -08 42 21.5 [ ] D 2006MNRAS.365.1357D

18 50 20.52 -08 46 05.5 [ ]

025.35411 -04.31800 [ ]

3.32 -4.38 [0.01 0.01 90] C 2019MNRAS.482.5138B

V(km/s) -107.5 [0.3] / z(spectroscopic) -0.000359 [0.000001] / cz -107.48 [0.30] (Opt) A 2018MNRAS.478.1520B

0.146 [0.011] C 2021MNRAS.505.5978V

7.2 7.2 90 (Opt) D 1989Sci...246.1066D

K 4.48 [~] D 2008MNRAS.389.1924F

g (AB) 7.955 [0.030] C 2014MNRAS.437.1725V

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`NGC 6712`	`C 1850-087`	`GCl 103`	`OCl 72.0`
`AO 1850-08`	`CSI-08-18503`	`GCRV 11335`	`[KPS2012] MWSC 3014`

References (550 between 1850 and 2026) (Total 550)
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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Data at NED - NASA/IPAC Extragalactic Database : NGC 6712

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NGC 6712

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