2004A&A...413..563M


Query : 2004A&A...413..563M

2004A&A...413..563M - Astronomy and Astrophysics, volume 413, 563-570 (2004/1-2)

Metallicity estimates for old star clusters in M 33.

MA J., ZHOU X. and CHEN J.S.

Abstract (from CDS):

Using the theoretical stellar population synthesis models of Bruzual & Charlot (1996, unpublished, hereafter BC96), Kong et al. (2000AJ....119.2745K) showed that some BATC colors and color indices could be used to disentangle the age and metallicity effect. They found that there is a very good relation between the flux ratio of L8510/L9170 and the metallicity for stellar populations older than 1 Gyr. In this paper, based on the Kong et al. results and on the multicolor spectrophotometry of Ma et al. (2001AJ....122.1796M, 2002A&A...385..404M, 2002AJ....123.3141M, 2002AcA....52..453M), we estimate the metallicities of 31 old star clusters in the nearby spiral galaxy M 33, 23 of which are ``true'' globular clusters. The results show that most of these old clusters are metal poor. We also find that the ages and metal abundance for these old star clusters of M 33 do not vary with deprojected radial position.

Abstract Copyright:

Journal keyword(s): galaxies: individual: M 33 - galaxies: evolution - galaxies: star clusters

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 CBF 161 GlC 01 32 44.30 +30 40 12.4 19.741 19.597 18.780 18.294 17.676 ~ 11 0
2 CBF 54 GlC 01 33 14.2863375672 +30 28 22.530659808 19.362 19.129 18.323 17.752 17.258 ~ 34 0
3 2MASS J01332206+3040283 GlC 01 33 22.062 +30 40 28.34 18.089 18.406 19.249 18.307 17.348 ~ 15 0
4 [SSA2010] 1179 GlC 01 33 27.3352494912 +30 41 59.779564656 19.149 19.197 18.529 17.913 17.247 ~ 9 0
5 [SSA2010] 1203 GlC 01 33 28.6875445368 +30 41 35.186506296 18.092 18.042 17.286 16.846 16.379 ~ 29 0
6 [SSA2010] 1230 GlC 01 33 30.70 +30 22 21.4 18.988 18.583 18.036 17.644 17.206 ~ 24 0
7 LGGS J013330.99+303652.5 sg* 01 33 30.9537080832 +30 36 52.371608760 17.983 18.380 18.040 17.752 17.125 A8I 13 0
8 [SSA2010] 1239 GlC 01 33 31.39 +30 40 20.4 18.750 18.581 17.979 17.619 17.241 ~ 24 0
9 [SSA2010] 1255 GlC 01 33 32.3940188400 +30 38 24.405570492 19.530 19.385 18.755 18.058 18.014 ~ 14 0
10 [SSA2010] 1258 GlC 01 33 33.00 +30 49 41.7 19.359 19.160 18.551 18.132 17.645 ~ 15 0
11 [SBG2007] 4 GlC 01 33 35.0831406456 +30 49 00.041875644 19.988 19.447 18.373 17.692 17.099 ~ 26 0
12 [SSA2010] 1324 GlC 01 33 38.00 +30 38 02.2 18.405 18.328 17.496 16.971 16.395 ~ 11 0
13 [SSA2010] 1458 GlC 01 33 45.10 +30 47 46.7 17.210 17.081 16.298 15.823 15.311 ~ 37 0
14 [SSA2010] 1487 GlC 01 33 46.9332652536 +30 46 36.184561068 19.508 19.618 18.759 18.275 17.677 ~ 9 0
15 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5489 1
16 [SSA2010] 1566 GlC 01 33 52.20 +30 29 03.8 18.297 18.126 17.290 16.773 16.277 ~ 31 0
17 [SSA2010] 1636 GlC 01 33 57.84 +30 35 31.8 18.916 18.945 18.133 17.699 17.172 ~ 15 0
18 [MKK98] M 33 29 GlC 01 34 01.9596683376 +30 39 37.776961080 17.346 17.198 16.399 15.922 15.414 ~ 14 0
19 [SSA2010] 1710 GlC 01 34 02.4399063576 +30 40 40.579894668 17.815 17.521 16.545 15.930 15.313 ~ 23 0
20 [SSA2010] 1736 GlC 01 34 06.30 +30 37 26.1 18.696 18.738 17.960 17.532 17.090 ~ 9 0
21 [SSA2010] 1765 GlC 01 34 08.04 +30 38 38.2 17.512 17.286 16.376 15.839 15.282 ~ 26 0
22 2MASS J01341852+3044471 s?r 01 34 18.5525093376 +30 44 47.715434484 22.7 21.39 19.55 18.74 17.9 ~ 12 0
23 [SSA2010] 2132 GlC 01 34 35.30 +30 38 30.1 19.976 19.708 18.794 18.274 17.849 ~ 11 0
24 [SSA2010] 2222 GlC 01 34 44.20 +30 52 18.9 18.565 18.427 17.578 17.073 16.595 ~ 27 0
25 HD 19445 PM* 03 08 25.5883873084 +26 19 51.400965175 8.29 8.52 8.06 7.60 7.27 G2VFe-3 752 0
26 HD 84937 PM* 09 48 56.0992891997 +13 44 39.326709913 8.49 8.68 8.32 7.97 7.70 F8Vm-5 751 0
27 BD+26 2606 SB* 14 49 02.3593347728 +25 42 09.192358874 9.92 10.16 9.73 9.27 8.95 A5 362 0
28 BD+17 4708 SB* 22 11 31.3756832854 +18 05 34.177983548 9.73 9.91 9.46 9.03 8.70 sdF8 552 0

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2022.05.24-10:44:42

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