2010MNRAS.408L..66N

Query : 2010MNRAS.408L..66N

2010MNRAS.408L..66N - Mon. Not. R. Astron. Soc., 408, L66-L70 (2010/October-2)

The tidal tails of the ultrafaint globular cluster Palomar 1.

NIEDERSTE-OSTHOLT M., BELOKUROV V., EVANS N.W., KOPOSOV S., GIELES M. and IRWIN M.J.

Abstract (from CDS):

Using the optimal filter technique applied to Sloan Digital Sky Survey photometry, we have found extended tails stretching about 1° (or several tens of half-light radii) from either side of the ultrafaint globular cluster Palomar 1. The tails contain roughly as many stars as does the cluster itself. Using deeper Hubble Space Telescope data, we see that the isophotes twist in a characteristic S-shape on moving outwards from the cluster centre to the tails. We argue that the main mechanism forming the tails may be relaxation-driven evaporation and that Pal 1 may have been accreted from a now disrupted dwarf galaxy ∼ 500 Myr ago.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): globular clusters: general - globular clusters: individual: Palomar 1 - Galaxy: kinematic and dynamics

Simbad objects: 25

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Number of rows : 25
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 NAME Whiting 1 GlC 02 02 56.8 -03 15 10           ~ 177 0
2 NAME Fornax H4 GlC 02 40 07.697 -34 32 10.59   15.18 13.91 14.08   ~ 112 0
3 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 267 1
4 NAME Eridanus Star Cluster GlC 04 24 44.5 -21 11 13           ~ 192 1
5 NGC 2298 GlC 06 48 59.41 -36 00 19.1     8.89     ~ 547 0
6 Koposov 2 GlC 07 58 17.00 +26 15 19.4           ~ 85 1
7 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
8 NAME E 3 GlC 09 20 57.07 -77 16 54.8           ~ 185 0
9 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 354 1
10 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 379 1
11 Koposov 1 GlC 11 59 18.40 +12 15 35.8           ~ 81 0
12 Cl Ruprecht 106 GlC 12 38 40.20 -51 09 01.0           ~ 413 0
13 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
14 NGC 5286 GlC 13 46 26.81 -51 22 27.3           ~ 485 0
15 C 1353-269 GlC 13 56 21.702 -27 10 03.00           ~ 146 0
16 IC 4499 GlC 15 00 18.57 -82 12 49.6     8.56     ~ 375 0
17 Cl Pal 5 GlC 15 16 05.30 -00 06 41.0   15.1       ~ 797 1
18 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
19 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
20 NAME Orphan Stream St* 19 09 -23.           ~ 281 0
21 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 460 0
22 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 384 0
23 NAME Segue 3 Cl* 21 21 31.0 +19 07 02           ~ 75 0
24 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 548 0
25 NAME Monoceros Stream St* ~ ~           ~ 374 1

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