2022AJ....164...48L

Query : 2022AJ....164...48L

2022AJ....164...48L - Astron. J., 164, 48-48 (2022)

Satellite Galaxies' Drag on Field Stars in the Milky Way.

LIANG X., LIU J., ZHAO J. and XU K.

Abstract (from CDS):

With Gaia EDR3 data, velocity dispersion of Milky Way field stars around satellite galaxies has been investigated. We have fitted velocity dispersion against the distance to the satellite galaxy and found the gradient of velocity dispersion is related to the mass of the satellite galaxy. With order-of-magnitude approximations, a linear correlation has been fitted between the mass of the satellite galaxy and the gradient of velocity dispersion caused by its gravitational drag. Though our result is an observational qualitative result, it shows a better relation could be obtained with more observations in the future.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Dwarf galaxies - Stellar kinematics - Galaxy masses

Simbad objects: 23

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Number of rows : 23
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 V* CM Phe CV* 00 21 33.1733628456 -51 42 34.646175540   15.3       ~ 24 1
2 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
3 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
4 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
5 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
6 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
7 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
8 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
9 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
10 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
11 NAME Crater II Dwarf Galaxy G 11 49 14 -18 24.8           ~ 176 0
12 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
13 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
14 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
15 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
16 NAME Draco II Gl? 15 52 47.6 +64 33 55           ~ 138 0
17 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
18 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
19 NAME Aquarius 2 G 22 33 55.5 -09 19 39           ~ 66 0
20 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
21 NAME Grus I G 22 56 42.4 -50 09 48           ~ 126 0
22 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
23 NAME Tuc V G 23 37.4 -63 16           ~ 84 0

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