2007A&A...462..237G

Query : 2007A&A...462..237G

2007A&A...462..237G - Astronomy and Astrophysics, volume 462, 237-243 (2007/1-4)

The TP-AGB phase. Lifetimes from C and M star counts in Magellanic Cloud clusters.

GIRARDI L. and MARIGO P.

Abstract (from CDS):

Using available data for C and M giants with Mbol←3.6 in Magellanic Cloud clusters, we derive limits to the lifetimes for the corresponding evolutionary phases, as a function of stellar mass. The C-star phase is found to have a duration between 2 and 3Myr for stars in the mass range from ∼1.5 to 2.8M☉. There is also an indication that the peak of C-star lifetime shifts to lower masses (from slightly above to slightly below 2M☉) as we move from LMC to SMC metallicities. The M-giant lifetimes also peak at ∼2M☉ in the LMC, with a maximum value of about 4Myr, whereas in the SMC their lifetimes appear much shorter, but, actually, they are poorly constrained by the data. These numbers constitute useful constraints to theoretical models of the TP-AGB phase. We show that several models in the literature underestimate the duration of the C-star phase at LMC metallicities.

Abstract Copyright: ∼

Journal keyword(s): stars: AGB and post-AGB - stars: carbon - galaxies: Magellanic Clouds - galaxies: star clusters

Simbad objects: 34

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Number of rows : 34
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ESO 28-19 Cl* 00 24 45.98 -72 47 37.9   11.6 12.05     ~ 148 0
2 NGC 121 GlC 00 26 49.0 -71 32 10   11.2 11.24     ~ 311 0
3 NGC 152 OpC 00 32 56.76 -73 06 56.4 13.37 13.05 12.26   11.13 ~ 91 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11149 1
5 NGC 339 OpC 00 57 47.62 -74 28 14.6 13.23 12.94 12.21   11.20 ~ 145 0
6 NGC 361 OpC 01 02 11.11 -71 36 25.3 12.86 12.43 11.77   10.70 ~ 101 0
7 NGC 411 Cl* 01 07 55.64 -71 46 03.1 13.05 12.63 12.10   11.11 ~ 105 0
8 NGC 416 Cl* 01 07 59.03 -72 21 20.5 12.73 12.55 11.76   10.71 ~ 148 1
9 NGC 419 OpC 01 08 17.26 -72 53 01.8 11.41 11.16 10.50   9.34 ~ 272 0
10 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7066 0
11 NGC 1651 GlC 04 37 32.530 -70 35 08.71   12.99 12.28     ~ 122 0
12 NGC 1652 GlC 04 38 23.010 -68 40 20.51   13.95 13.13     ~ 42 0
13 NGC 1841 GlC 04 45 24.38 -83 59 53.3   12.23 11.43     ~ 182 0
14 NGC 1751 Cl* 04 54 12.91 -69 48 26.8   15.06 11.73     ~ 89 0
15 NGC 1783 GlC 04 59 08.590 -65 59 15.84   10.9 10.93     ~ 253 0
16 NGC 1806 GlC 05 02 11.180 -67 59 05.89   11.1       ~ 157 0
17 NGC 1846 Cl* 05 07 34.900 -67 27 32.45   12.08 11.31     ~ 215 0
18 NGC 1850 Cl* 05 08 50.190 -68 45 35.65   8.84 8.96     ~ 273 1
19 NGC 1855 Cl* 05 09 21.180 -68 50 39.56   10.18 10.39     ~ 78 0
20 NGC 1866 GlC 05 13 38.920 -65 27 52.75           ~ 421 0
21 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
22 NGC 1987 GlC 05 27 16.940 -70 44 14.16   12.1       ~ 92 0
23 NGC 1978 GlC 05 28 45.330 -66 14 12.04   10.7 10.70     ~ 309 0
24 NGC 2058 Cl* 05 36 58.560 -70 09 44.75   12.09 11.85     ~ 42 0
25 NGC 2107 Cl* 05 43 12.270 -70 38 26.83   11.89 11.51     ~ 49 0
26 NGC 2108 GlC 05 43 56.270 -69 10 54.37   12.90 12.32     ~ 67 0
27 NGC 2121 Cl* 05 48 13.190 -71 28 52.00   13.21 12.37     ~ 132 0
28 NGC 2136 Cl* 05 53 01.800 -69 29 24.24   10.99 10.70     ~ 118 1
29 NGC 2154 Cl* 05 57 38 -67 15.7   12.47 11.79     ~ 60 0
30 NGC 2173 GlC 05 57 58 -72 58.7   12.74 11.88     ~ 141 0
31 NGC 2209 GlC 06 08 36.06 -73 50 07.9   13.58 13.15     ~ 114 0
32 NGC 2213 Cl* 06 10 42.000 -71 31 43.99           ~ 95 0
33 NGC 2214 OpC 06 12 57 -68 15.6   11.04 10.93     ~ 119 0
34 NGC 2231 GlC 06 20 43.129 -67 31 06.96   13.87 13.20     ~ 61 0

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