2013ApJ...766...77N


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.14CEST00:43:15

2013ApJ...766...77N - Astrophys. J., 766, 77 (2013/April-1)

Red giant branch bump brightness and number counts in 72 galactic globular clusters observed with the Hubble space telescope.

NATAF D.M., GOULD A.P., PINSONNEAULT M.H. and UDALSKI A.

Abstract (from CDS):

We present the broadest and most precise empirical investigation of red giant branch bump (RGBB) brightness and number counts ever conducted. We implement a new method and use data from two Hubble Space Telescope globular cluster (GC) surveys to measure the brightness and star counts of the RGBB in 72 GCs. The median measurement precision is 0.018 mag in the brightness and 31% in the number counts, respectively, reaching peak precision values of 0.005 mag and 10%. The position of the main-sequence turnoff and the number of horizontal branch stars are used as comparisons where appropriate. Several independent scientific conclusions are newly possible with our parameterization of the RGBB. Both brightness and number counts are shown to have second parameters in addition to their strong dependence on metallicity. The RGBBs are found to be anomalous in the GCs NGC 2808, 5286, 6388, and 6441, likely due to the presence of multiple populations. Finally, we use our empirical calibration to predict the properties of the Galactic bulge RGBB. The updated RGBB properties for the bulge are shown to differ from the GC-calibrated prediction, with the former having lower number counts, a lower brightness dispersion, and a brighter peak luminosity than would be expected from the latter. This discrepancy is well explained by the Galactic bulge having a higher helium abundance than expected from GCs, ΔY ∼ +0.06 at the median metallicity.

Abstract Copyright:

Journal keyword(s): Galaxy: bulge - globular clusters: general - globular clusters: individual (NGC 2808, NGC 5286, NGC 6388, NGC 6441) - Hertzsprung-Russell and C-M diagrams

Simbad objects: 84

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Number of rows : 84

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 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3646 0
2 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 2042 2
3 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11340 1
4 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 976 0
5 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 447 0
6 NGC 1851 GlC 05 14 06.76 -40 02 47.6   8.80 7.23     ~ 1282 0
7 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 740 0
8 NAME PYX GLOBULAR CL GlC 09 07 57.80 -37 13 17.0           ~ 86 0
9 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1293 0
10 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 762 0
11 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 515 0
12 C 1235-509 GlC 12 38 40.20 -51 09 01.0           ~ 333 0
13 M 68 GlC 12 39 27.98 -26 44 38.6   10.26 7.96     ~ 909 0
14 NGC 4833 GlC 12 59 33.92 -70 52 35.4   8.72 7.79     ~ 371 0
15 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 746 0
16 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3112 0
17 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2320 0
18 NGC 5286 GlC 13 46 26.81 -51 22 27.3   9.18 8.31     ~ 388 0
19 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 260 0
20 IC 4499 GlC 15 00 18.57 -82 12 49.6     8.56     ~ 320 0
21 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 358 0
22 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1822 0
23 NGC 5927 GlC 15 28 00.69 -50 40 22.9   10.13 8.86     ~ 420 0
24 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 324 0
25 Cl Lynga 7 GlC 16 11 03.65 -55 19 04.0           ~ 96 0
26 UGC 10310 IG 16 16 17.9040378078 +47 02 43.158504118   14.9       ~ 129 0
27 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 646 0
28 NGC 6101 GlC 16 25 48.12 -72 12 07.9   10.90 10.08     ~ 252 0
29 NGC 6144 GlC 16 27 13.86 -26 01 24.6   10.55 9.63     ~ 215 0
30 NGC 6139 GlC 16 27 39.987 -38 50 57.03   11.03 9.68     ~ 185 0
31 M 107 GlC 16 32 31.86 -13 03 13.6   9.96 8.85     ~ 729 0
32 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2055 0
33 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 326 0
34 M 12 GlC 16 47 14.18 -01 56 54.7   8.52 6.07     ~ 602 0
35 NGC 6235 GlC 16 53 25.36 -22 10 38.8   11.99 7.20     ~ 165 0
36 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 718 0
37 M 62 GlC 17 01 12.60 -30 06 44.5   8.55 7.39     ~ 537 0
38 NGC 6284 GlC 17 04 28.747 -24 45 51.22   10.72 7.43     ~ 246 0
39 NGC 6304 GlC 17 14 32.25 -29 27 43.3   10.33 9.03     ~ 312 0
40 NGC 6316 GlC 17 16 37.42 -28 08 24.0   10.33 9.03     ~ 182 0
41 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1947 0
42 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 326 1
43 NGC 6352 GlC 17 25 29.11 -48 25 19.8   9.95 8.87     ~ 356 0
44 NGC 6366 GlC 17 27 44.24 -05 04 47.5           ~ 273 0
45 NGC 6362 GlC 17 31 54.99 -67 02 54.0   9.72 8.86     ~ 508 0
46 NGC 6388 GlC 17 36 17.461 -44 44 08.34   7.40       ~ 834 1
47 M 14 GlC 17 37 36.15 -03 14 45.3   9.55 5.73     ~ 330 0
48 NGC 6397 GlC 17 40 42.09 -53 40 27.6   7.39 5.17     ~ 1838 1
49 NGC 6426 GlC 17 44 54.71 +03 10 12.5           ~ 194 0
50 NGC 6440 GlC 17 48 52.67 -20 21 34.5   12.01 10.10     ~ 486 1
51 NGC 6441 GlC 17 50 13.06 -37 03 05.2   9.26 8.00     ~ 795 0
52 NGC 6496 GlC 17 59 03.68 -44 15 57.4   9.96       ~ 192 0
53 NAME Baade Window reg 18 03.5 -30 01           ~ 560 3
54 NGC 6539 GlC 18 04 49.74 -07 35 09.1           ~ 201 0
55 NGC 6541 GlC 18 08 02.36 -43 42 53.6   8.06 7.32     ~ 337 1
56 NGC 6569 GlC 18 13 38.88 -31 49 35.2   10.78 9.47     ~ 199 0
57 NGC 6584 GlC 18 18 37.60 -52 12 56.8   10.32 8.17     ~ 256 0
58 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 802 1
59 NGC 6638 GlC 18 30 56.25 -25 29 47.1   10.81 9.68     ~ 200 0
60 M 69 GlC 18 31 23.10 -32 20 53.1   9.32 8.31     ~ 422 1
61 NGC 6642 GlC 18 31 54.23 -23 28 34.1   11.30 10.24     ~ 169 0
62 NGC 6652 GlC 18 35 45.63 -32 59 26.6   10.64 9.75     ~ 367 0
63 M 22 GlC 18 36 23.94 -23 54 17.1   7.16 6.17     ~ 1257 0
64 M 70 GlC 18 43 12.76 -32 17 31.6   9.76 9.06     ~ 345 0
65 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 950 0
66 NGC 6717 GlC 18 55 06.04 -22 42 05.3   11.29 10.35     ~ 207 0
67 NGC 6723 GlC 18 59 33.15 -36 37 56.1           ~ 448 0
68 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1852 0
69 NGC 6760 GlC 19 11 12.06 +01 01 49.7   11.37 9.78     ~ 212 0
70 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 378 0
71 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 315 0
72 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 782 0
73 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 274 0
74 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1048 0
75 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 325 0
76 NGC 6934 GlC 20 34 11.37 +07 24 16.1   10.48 9.75     ~ 374 0
77 M 72 GlC 20 53 27.70 -12 32 14.3   9.95 8.96     ~ 380 0
78 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 493 0
79 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 2963 0
80 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 931 1
81 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 949 0
82 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 467 0
83 NAME Local Group GrG ~ ~           ~ 7286 0
84 NAME Galactic Bulge reg ~ ~           ~ 3604 0

    Equat.    Gal    SGal    Ecl

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2021.06.14-00:43:15

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