2015MNRAS.448..502M


Query : 2015MNRAS.448..502M

2015MNRAS.448..502M - Mon. Not. R. Astron. Soc., 448, 502-521 (2015/March-3)

Mass-loss on the red giant branch: the value and metallicity dependence of Reimers' η in globular clusters.

McDONALD I. and ZIJLSTRA A.A.

Abstract (from CDS):

The impact of metallicity on the mass-loss rate from red giant branch (RGB) stars is studied through its effect on the parameters of horizontal branch (HB) stars. The scaling factors from Reimers and Schröder and Cuntz are used to measure the efficiency of RGB mass-loss for typical stars in 56 well-studied Galactic globular clusters (GCs). The median values among clusters are, respectively, η_R = 0.477 ±0.070 ^+0.050_-0.062 and η_SC = 0.172 ±0.024 ^+0.018_-0.023 (standard deviation and systematic uncertainties, respectively). Over a factor of 200 in iron abundance, η varies by ≲ 30 per cent, thus mass-loss mechanisms on the RGB have very little metallicity dependence. Any remaining dependence is within the current systematic uncertainties on cluster ages and evolution models. The low standard deviation of η among clusters (~14 per cent) contrasts with the variety of HB morphologies. Since η incorporates cluster age, this suggests that age accounts for the majority of the `second parameter problem', and that a Reimers-like law provides a good mass-loss model. The remaining spread in η correlates with cluster mass and density, suggesting helium enrichment provides the third parameter explaining HB morphology of GCs. We close by discussing asymptotic giant branch (AGB) mass-loss, finding that the AGB tip luminosity is better reproduced and η has less metallicity dependence if GCs are more co-eval than generally thought.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): stars: evolution - stars: horizontal branch - stars: mass-loss - stars: winds, outflows - globular clusters: general

Simbad objects: 70

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Number of rows : 70
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 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3736 0
2 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 988 0
3 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1016 0
4 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 473 0
5 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 224 1
6 NAME Eridanus ClG GrG 03 38 32.00 -22 18 51.0           ~ 160 0
7 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 191 0
8 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1335 0
9 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 766 0
10 NGC 2298 GlC 06 48 59.41 -36 00 19.1   10.77 8.89     ~ 462 0
11 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 881 0
12 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1340 0
13 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 309 1
14 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 801 0
15 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 334 1
16 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 539 0
17 NGC 4372 GlC 12 25 45.43 -72 39 32.7   10.86 9.85     ~ 284 0
18 M 68 GlC 12 39 27.98 -26 44 38.6   10.26 7.96     ~ 939 0
19 NGC 4833 GlC 12 59 33.92 -70 52 35.4   8.72 7.79     ~ 384 0
20 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 776 0
21 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 580 0
22 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3252 0
23 NGC 5262 GiP 13 35 38.6055452832 +75 02 21.903944388   14.41 13.65     ~ 14 0
24 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2378 0
25 NGC 5466 GlC 14 05 27.29 +28 32 04.0   10.5 9.70     ~ 781 0
26 NGC 5694 GlC 14 39 36.52 -26 32 18.0   11.58 10.89     ~ 284 0
27 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 379 0
28 NGC 5897 GlC 15 17 24.40 -21 00 36.4   10.16 8.52     ~ 363 0
29 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1879 0
30 NGC 5927 GlC 15 28 00.69 -50 40 22.9   10.13 8.86     ~ 432 0
31 NGC 5946 GlC 15 35 28.58 -50 39 35.0   11.98 10.72     ~ 179 0
32 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 339 0
33 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 346 0
34 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 671 0
35 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1766 0
36 NGC 6101 GlC 16 25 48.12 -72 12 07.9   10.90 10.08     ~ 266 0
37 M 107 GlC 16 32 31.86 -13 03 13.6   9.96 8.85     ~ 750 0
38 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2107 0
39 M 12 GlC 16 47 14.18 -01 56 54.7   8.52 6.07     ~ 627 0
40 NGC 6235 GlC 16 53 25.36 -22 10 38.8   11.99 7.20     ~ 173 0
41 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 745 0
42 M 62 GlC 17 01 12.60 -30 06 44.5   8.55 7.39     ~ 563 0
43 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 344 1
44 NGC 6284 GlC 17 04 28.747 -24 45 51.22   10.72 7.43     ~ 259 0
45 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2001 0
46 NGC 6342 GlC 17 21 10.14 -19 35 14.7   11.25 10.01     ~ 267 0
47 NGC 6352 GlC 17 25 29.11 -48 25 19.8   9.95 8.87     ~ 369 0
48 NGC 6362 GlC 17 31 54.99 -67 02 54.0   9.72 8.86     ~ 537 0
49 NGC 6397 GlC 17 40 42.09 -53 40 27.6   7.39 5.17     ~ 1885 1
50 NGC 6441 GlC 17 50 13.06 -37 03 05.2   9.26 8.00     ~ 830 0
51 NGC 6535 GlC 18 03 50.51 -00 17 51.5   11.35 9.85     ~ 269 0
52 NGC 6544 GlC 18 07 20.58 -24 59 50.4   11.36 9.90     ~ 267 0
53 NGC 6584 GlC 18 18 37.60 -52 12 56.8   10.32 8.17     ~ 265 0
54 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 719 0
55 M 69 GlC 18 31 23.10 -32 20 53.1   9.32 8.31     ~ 438 1
56 NGC 6652 GlC 18 35 45.63 -32 59 26.6   10.64 9.75     ~ 393 0
57 M 70 GlC 18 43 12.76 -32 17 31.6   9.76 9.06     ~ 355 0
58 NGC 6712 GlC 18 53 04.32 -08 42 21.5   9.85 8.69     ~ 494 0
59 NGC 6723 GlC 18 59 33.15 -36 37 56.1           ~ 469 0
60 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1902 0
61 M 56 GlC 19 16 35.57 +30 11 00.5   8.90       ~ 393 0
62 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 401 0
63 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 810 0
64 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1076 0
65 NGC 6934 GlC 20 34 11.37 +07 24 16.1   10.48 9.75     ~ 390 0
66 M 72 GlC 20 53 27.70 -12 32 14.3   9.95 8.96     ~ 394 0
67 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 3029 0
68 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 968 1
69 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 983 0
70 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 491 0

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2022.08.10-08:21:01

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