2004A&A...419..533B


Query : 2004A&A...419..533B

2004A&A...419..533B - Astronomy and Astrophysics, volume 419, 533-541 (2004/5-4)

Palomar 13: A velocity dispersion inflated by binaries?

BLECHA A., MEYLAN G., NORTH P. and ROYER F.

Abstract (from CDS):

Recently, combining radial velocities from Keck/HIRES echelle spectra with published proper motion membership probabilities, Cote et al. (2002ApJ...574..783C) observed a sample of 21 stars, probable members of Palomar 13, a globular cluster in the Galactic halo. Their projected velocity dispersion σp=2.2±0.4km/s gives a mass-to-light ratio M/LV=40+24–17, about one order of magnitude larger than the usual estimate for globular clusters. We present here radial velocities measured from three different CCD frames of commissioning observations obtained with the new ESO/VLT instrument FLAMES (Fibre Large Array Multi Element Spectrograph). From these data, now publicly available, we measure the homogeneous radial velocities of eight probable members of this globular cluster. A new projected velocity dispersion σp=0.6-0.9±0.3km/s implies Palomar 13 mass-to-light ratio M/LV=3-7, similar to the usual value for globular clusters. We discuss briefly the two most obvious reasons for the previous unusual mass-to-light ratio finding: binaries, now clearly detected, and more homogeneous data from the multi-fibre FLAMES spectrograph.

Abstract Copyright:

Journal keyword(s): Galaxy: globular clusters: individual: Palomar 13 - techniques: radial velocities - stars: kinematics - stars: population II

VizieR on-line data: <Available at CDS (J/A+A/419/533): table2.dat table3.dat>

CDS comments: Table 2, 1rst column : the second ID (Keck) is written Cl* Palomar 13 ORS NNN in Simbad.

Simbad objects: 47

goto Full paper

goto View the references in ADS

Number of rows : 47
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Cl* Palomar 13 SMC 195 * 23 06 20.8418214038 +12 45 39.750216475     19.85     ~ 2 0
2 Cl* Palomar 13 SMC 101 * 23 06 20.94 +12 49 53.7     19.13     ~ 2 0
3 Cl* Palomar 13 SMC 78 * 23 06 23.4455226495 +12 44 14.921048997     18.66     ~ 2 0
4 Cl* Palomar 13 SMC 85 * 23 06 26.3416219723 +12 49 53.457641044     18.80     ~ 2 0
5 Cl* Palomar 13 SMC 56 * 23 06 28.2634521317 +12 41 14.682645678     18.21     ~ 2 0
6 Cl* Palomar 13 SMC 148 * 23 06 28.57 +12 43 30.3     19.86     ~ 2 0
7 Cl* Palomar 13 SMC 127 * 23 06 31.2907010714 +12 43 36.513152962     19.30     ~ 2 0
8 Cl* Palomar 13 SMC 217 * 23 06 32.1668632131 +12 44 03.360602891     19.97     ~ 3 0
9 Cl* Palomar 13 SMC 51 * 23 06 32.2039528343 +12 44 29.727944479     18.12     ~ 3 0
10 Cl* Palomar 13 SMC 177 * 23 06 33.02 +12 45 47.7     19.61     ~ 2 0
11 Cl* Palomar 13 SMC 198 * 23 06 34.7760959530 +12 44 56.535532584     19.91     ~ 3 0
12 Cl* Palomar 13 SMC 26 * 23 06 35.8609061907 +12 46 55.296591041   18.04 17.04     ~ 4 0
13 Cl* Palomar 13 SMC 22 * 23 06 37.3028268474 +12 49 27.031640654     16.90     ~ 3 0
14 Cl* Palomar 13 CDM 910 RG* 23 06 39.3691428865 +12 47 35.204765323   20.01 19.28     ~ 6 0
15 Cl* Palomar 13 ORS 1 * 23 06 40.1703276581 +12 44 00.687685562   19.41 18.59     ~ 4 0
16 Cl* Palomar 13 SMC 29 * 23 06 41.4524464191 +12 49 28.286388375     17.33     ~ 3 0
17 Cl* Palomar 13 SMC 38 RR* 23 06 41.5449338651 +12 46 58.462898158   18.33 17.53     ~ 8 0
18 Cl* Palomar 13 CDM 30 RG* 23 06 43.8197316180 +12 45 36.047712229   19.73 18.98     ~ 7 0
19 Cl* Palomar 13 SMC 23 * 23 06 43.9206629740 +12 42 06.351302763     16.97     ~ 3 0
20 Cl* Palomar 13 ORS 101 * 23 06 43.9858604250 +12 46 53.495378912   19.14 18.29     ~ 5 0
21 Cl* Palomar 13 CDM 29 * 23 06 44.3006936748 +12 45 48.994872584   19.38 19.02     ~ 4 0
22 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 243 1
23 Cl* Palomar 13 SMC 3669 PM* 23 06 44.7431538852 +12 47 12.263715755     19.91     ~ 3 0
24 Cl* Palomar 13 SMC 21 * 23 06 45.5034056321 +12 49 53.197652821     16.91     ~ 2 0
25 Cl* Palomar 13 ORS 23 * 23 06 45.58 +12 45 01.1   20.99 19.49     ~ 3 0
26 Cl* Palomar 13 CSB 15 RG* 23 06 45.7568355921 +12 46 40.964376154   20.51 19.80     ~ 6 0
27 Cl* Palomar 13 SMC 60 * 23 06 47.7667616131 +12 49 37.890701311     18.44     ~ 3 0
28 Cl* Palomar 13 ORS 6 * 23 06 47.8884476313 +12 44 22.681076738   18.13 17.03     ~ 4 0
29 Cl* Palomar 13 ORS 41 RG* 23 06 48.2781294415 +12 45 46.489606461   19.35 18.59     ~ 6 0
30 2MASS J23064851+1246189 RG* 23 06 48.5175893729 +12 46 19.088482318   18.49 17.64     ~ 6 0
31 Cl* Palomar 13 SMC 36 RR* 23 06 48.8544675732 +12 41 22.801026531   17.99 17.67     ~ 10 0
32 Cl* Palomar 13 ORS 13 * 23 06 48.9747767896 +12 44 45.441598016   17.44 16.55     ~ 4 0
33 Cl* Palomar 13 CDM 45 * 23 06 49.5110380258 +12 44 20.505205959     19.71     ~ 4 0
34 Cl* Palomar 13 ORS 31 * 23 06 49.9490212300 +12 45 27.864788045   18.59 17.76     ~ 5 0
35 2MASS J23065009+1247139 RG* 23 06 50.0999785210 +12 47 14.024086809   17.93 17.00     ~ 6 0
36 Cl* Palomar 13 SMC 53 * 23 06 52.58 +12 41 28.9     18.14     ~ 2 0
37 Cl* Palomar 13 SMC 243 * 23 06 54.77 +12 49 48.3     20.14     ~ 2 0
38 Cl* Palomar 13 SMC 40 * 23 06 56.24 +12 46 17.6     17.27     ~ 2 0
39 Cl* Palomar 13 SMC 75 * 23 06 56.2475126317 +12 47 57.025994498     18.64     ~ 2 0
40 Cl* Palomar 13 SMC 47 * 23 06 56.8446822059 +12 47 39.058231556     17.90     ~ 2 0
41 Cl* Palomar 13 SMC 238 * 23 06 58.4175993922 +12 42 28.050120397     20.08     ~ 3 0
42 Cl* Palomar 13 SMC 111 * 23 06 59.5895778649 +12 43 24.190021694     19.14     ~ 2 0
43 Cl* Palomar 13 SMC 87 * 23 07 00.5195913453 +12 48 36.570973191     18.85     ~ 2 0
44 Cl* Palomar 13 SMC 262 * 23 07 02.25 +12 42 14.3     20.17     ~ 2 0
45 Cl* Palomar 13 SMC 175 * 23 07 03.31 +12 44 49.0     19.47     ~ 2 0
46 Cl* Palomar 13 SMC 97 * 23 07 03.5707111521 +12 43 58.777277219     19.14     ~ 3 0
47 Cl* Palomar 13 SMC 158 * 23 07 03.9258385118 +12 47 57.944559773     19.53     ~ 3 0

To bookmark this query, right click on this link: simbad:objects in 2004A&A...419..533B and select 'bookmark this link' or equivalent in the popup menu


2021.10.20-00:19:37

© Université de Strasbourg/CNRS

    • Contact