2015A&A...574A..15F


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.30CET03:32:45

2015A&A...574A..15F - Astronomy and Astrophysics, volume 574A, 15-15 (2015/2-1)

Searching for tidal tails around ω Centauri using RR Lyrae stars.

FERNANDEZ-TRINCADO J.G., VIVAS A.K., MATEU C.E., ZINN R., ROBIN A.C., VALENZUELA O., MORENO E. and PICHARDO B.

Abstract (from CDS):

We present a survey of RR Lyrae stars in an area of 50deg2 around the globular cluster ω Centauri, aimed at detecting debris material from the alleged progenitor galaxy of the cluster. We detected 48 RR Lyrae stars, only 11 of which have been previously reported. Ten of the eleven previously known stars were found inside the tidal radius of the cluster. The rest were located outside the tidal radius up to distances of ∼6-degrees from the center of the cluster. Several of these stars are located at distances similar to that of ω Centauri. We investigate the probability that they may have been stripped off the cluster. To do this, we studied their properties (mean periods) by calculating the expected halo and thick-disk population of RR Lyrae stars in this part of the sky, analyzing the radial velocity of a sub-sample of the RR Lyrae stars, and finally, studying the probable orbits of this sub-sample around the Galaxy. The results of these investigations do not support the scenario that there is significant tidal debris around ω Centauri, which confirms previous studies on the region. It is puzzling that tidal debris has been found elsewhere but not near the cluster itself.

Abstract Copyright:

Journal keyword(s): stars: variables: RR Lyrae - stars: kinematics and dynamics - globular clusters: individual: ω Centauri - globular clusters: individual: NGC 5139 - stars: horizontal-branch

VizieR on-line data: <Available at CDS (J/A+A/574/A15): table12.dat>

Nomenclature: Table 1-2: [FVM2015] NN (Nos 1-50).

Simbad objects: 58

goto Full paper

goto View the reference in ADS

Number of rows : 58

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* X Ari RR* 03 08 30.8844194016 +10 26 45.221908919 9.45 9.25 8.97     F0.5 268 0
2 V* T Sex RR* 09 53 28.4001398465 +02 03 26.346766521 10.22 10.04 9.82     A1V 138 0
3 [FVM2015] 1 RR* 13 19 08.9729101684 -49 30 08.030624905     15.06     ~ 1 0
4 [FVM2015] 2 RR* 13 19 25.4010275096 -47 05 04.406501769     15.11     ~ 2 0
5 [FVM2015] 3 RR* 13 21 09.4061611181 -47 00 58.917285364     16.66     ~ 1 0
6 [FVM2015] 4 RR* 13 22 22.8730078267 -48 19 04.333590866     13.22     ~ 7 0
7 CRTS J132310.3-453548 RR* 13 23 10.3495569464 -45 35 49.012711723     14.37     ~ 2 0
8 [FVM2015] 6 RR* 13 25 36.0764276745 -47 12 32.214781620   14.81 14.52     ~ 17 0
9 [FVM2015] 7 RR* 13 25 53.6533670883 -47 16 10.615797665   14.980 14.49     ~ 18 0
10 [FVM2015] 8 RR* 13 26 23.5000539581 -47 18 48.096566312 14.918 15.228 14.42   13.748 ~ 30 0
11 [FVM2015] 9 RR* 13 26 28.5605416653 -47 18 47.206025168 15.426 14.785 14.68 14.228 14.052 ~ 29 0
12 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3032 0
13 Cl* NGC 5139 B V7 RR* 13 27 01.0175225752 -47 14 00.135922027   14.990 14.42     ~ 28 0
14 [FVM2015] 11 RR* 13 27 10.1915668418 -47 15 29.517768936   14.810 14.46     ~ 24 0
15 [FVM2015] 12 RR* 13 27 19.6917065634 -47 18 46.990083973 14.856 14.734 14.439 14.071 13.823 ~ 26 0
16 [FVM2015] 13 RR* 13 27 32.8497177639 -47 13 43.328882918   14.940 14.33   14.02 ~ 19 0
17 [FVM2015] 14 RR* 13 27 33.0210300995 -47 16 22.726119671   14.890 14.50     ~ 19 0
18 [FVM2015] 15 RR* 13 27 55.0383391925 -47 04 38.408993927     14.60   13.66 ~ 11 0
19 [FVM2015] 16 RR* 13 30 26.9247143184 -49 27 52.918234131         15.03 ~ 1 0
20 [FVM2015] 17 RR* 13 30 30.1295316731 -44 36 02.490857879     16.05     ~ 1 0
21 [FVM2015] 49 V* 13 30 34.530 -45 59 40.06     14.02     ~ 1 0
22 [FVM2015] 18 RR* 13 30 43.7834009568 -45 34 35.450651373     16.26     ~ 1 0
23 [FVM2015] 19 RR* 13 31 06.1815557292 -45 45 50.855807865     15.76     ~ 1 0
24 [FVM2015] 20 RR* 13 31 28.6725205239 -45 01 41.543779420         16.04 ~ 1 0
25 CRTS J133316.3-470744 RR* 13 33 16.1688293403 -47 07 44.607004585     14.94   14.45 ~ 2 0
26 [FVM2015] 22 RR* 13 34 19.0813154681 -45 41 37.648953464     17.38     ~ 1 0
27 [FVM2015] 23 RR* 13 34 22.8022110920 -45 24 43.247964071     15.39     ~ 1 0
28 [FVM2015] 24 RR* 13 34 49.8887149455 -48 37 41.217862473         15.25 ~ 1 0
29 [FVM2015] 25 RR* 13 34 51.7208033051 -45 46 14.427369802     14.94     ~ 1 0
30 CRTS J133548.1-470123 RR* 13 35 48.1916002160 -47 01 23.426932488     15.57   15.27 ~ 2 0
31 CRTS J133604.3-481553 RR* 13 36 04.1083824718 -48 15 56.911021033     15.95   15.36 ~ 2 0
32 CRTS J133632.2-474929 RR* 13 36 32.2243157050 -47 49 30.473322081     13.85   13.55 ~ 2 0
33 [FVM2015] 29 RR* 13 36 39.3932076622 -45 39 05.732623254     17.23     ~ 1 0
34 [FVM2015] 30 RR* 13 36 50.9182271033 -47 13 34.280387522         15.26 ~ 1 0
35 [FVM2015] 31 RR* 13 37 55.7244242210 -43 13 07.578653237     17.35     ~ 2 0
36 [FVM2015] 32 RR* 13 39 22.0671138460 -44 35 42.973414156     15.35     ~ 1 0
37 CRTS J134134.8-445646 RR* 13 41 34.7233010440 -44 56 45.741029269     13.02     ~ 2 0
38 [FVM2015] 50 V* 13 44 36.4798310368 -44 11 31.722414114         14.18 ~ 1 0
39 [FVM2015] 34 RR* 13 45 25.862 -46 10 14.94         16.40 ~ 1 0
40 CRTS J134736.2-445228 RR* 13 47 36.2975878687 -44 52 28.549290248     15.53   15.15 ~ 2 0
41 CRTS J134740.7-453641 RR* 13 47 40.8015271160 -45 36 41.330832815     13.60   13.18 ~ 2 0
42 [FVM2015] 37 RR* 13 49 35.4957561283 -44 06 27.556680875         15.14 ~ 1 0
43 CRTS J134952.4-443829 RR* 13 49 52.5884758602 -44 38 27.519086294     15.47   15.08 ~ 2 0
44 [FVM2015] 39 RR* 13 51 08.6969112566 -44 33 21.023479216         15.72 ~ 1 0
45 CRTS J135116.9-451145 RR* 13 51 17.0208884199 -45 11 44.068657406     16.66   16.29 ~ 3 0
46 [FVM2015] 41 RR* 13 52 15.6895190111 -44 42 26.276926254         14.95 ~ 1 0
47 [FVM2015] 42 RR* 13 53 39.2360623898 -44 05 31.831369348     14.06   13.62 ~ 2 0
48 [FVM2015] 43 RR* 13 54 30.7209866124 -44 26 15.012575227         15.77 ~ 1 0
49 CRTS J135507.2-441951 RR* 13 55 07.2550063817 -44 19 53.930930566     15.16   14.52 ~ 2 0
50 CRTS J135532.9-442015 RR* 13 55 32.8621814954 -44 20 18.257188012     15.98   15.44 ~ 2 0
51 CRTS J135549.0-435445 RR* 13 55 49.0555280476 -43 54 45.789008207     15.04   14.41 ~ 2 0
52 CRTS J135605.2-442943 RR* 13 56 05.3085134492 -44 29 42.320023667     16.83   16.42 ~ 2 0
53 CRTS J135633.7-435415 RR* 13 56 33.7414292052 -43 54 15.700949146     15.37   15.05 ~ 2 0
54 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11765 0
55 V* BL Her WV* 18 01 09.2241552984 +19 14 56.695123489   10.54 9.70     F0 156 0
56 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1778 2
57 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 914 0
58 V* DH Peg RR* 22 15 25.6400732005 +06 49 21.440166281 9.72 9.51 9.25 9.23   A4 171 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2015A&A...574A..15F and select 'bookmark this link' or equivalent in the popup menu


2020.10.30-03:32:45

© Université de Strasbourg/CNRS

    • Contact