2007ApJ...670..400C


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.18CET03:36:18

2007ApJ...670..400C - Astrophys. J., 670, 400-422 (2007/November-3)

Stromgren photometry of Galactic globular clusters. I. New calibrations of the metallicity index.

CALAMIDA A., BONO G., STETSON P.B., FREYHAMMER L.M., CASSISI S., GRUNDAHL F., PIETRINFERNI A., HILKER M., PRIMAS F., RICHTLER T., ROMANIELLO M., BUONANNO R., CAPUTO F., CASTELLANI M., CORSI C.E., FERRARO I., IANNICOLA G. and PULONE L.

Abstract (from CDS):

We present a new calibration of the Strömgren metallicity index m1 using red giant (RG) stars in four globular clusters (GCs: M92, M13, NGC 1851, 47 Tuc) with metallicity ranging from -2.2 to -0.7, marginally affected by reddening [E(B-V)≤0.04] and with accurate (u,v,b,y) photometry. The main difference between the new metallicity-index-color (MIC) relations and similar relations available in the literature is that we have adopted the u-y and v-y colors instead of b-y. These colors present a stronger sensitivity to effective temperature, and the MIC relations show a linear slope. The difference between photometric estimates and spectroscopic measurements for RGs in M71, NGC 288, NGC 362, NGC 6397, and NGC 6752 is 0.04±0.03 dex (σ=0.11 dex). We also apply the new MIC relations to 85 field RGs with metallicity ranging from -2.4 to -0.5 and accurate reddening estimates. We find that the difference between photometric estimates and spectroscopic measurements is -0.14±0.01 dex (σ=0.17 dex). We also provide two sets of MIC relations based on evolutionary models that have been transformed into the observational plane by adopting either semiempirical or theoretical color-temperature relations. We apply the semiempirical relations to the nine GCs and find that the difference between photometric and spectroscopic metallicities is 0.04±0.03 dex (σ=0.10 dex). A similar agreement is found for the sample of field RGs, with a difference of -0.09±0.03 dex (with σ=0.19 dex). The difference between metallicity estimates based on theoretical relations and spectroscopic measurements is -0.11±0.03 dex (σ=0.14 dex) for the nine GCs and -0.24±0.03 dex (σ=0.15 dex) for the field RGs. Current evidence indicates that new MIC relations provide metallicities with an intrinsic accuracy better than 0.2 dex.

Abstract Copyright:

Journal keyword(s): Galaxy: Globular Clusters: General - Galaxy: Globular Clusters: Individual: Messier Number: M13 - Galaxy: Globular Clusters: Individual: Messier Number: M71 - Galaxy: Globular Clusters: Individual: Messier Number: M92 - Galaxy: Globular Clusters: Individual: NGC Number: NGC 288 - Galaxy: Globular Clusters: Individual: NGC Number: NGC 362 - Galaxy: Globular Clusters: Individual: NGC Number: NGC 1851 - Galaxy: Globular Clusters: Individual: NGC Number: NGC 6397 - Galaxy: Globular Clusters: Individual: NGC Number: NGC 6752 - Galaxy: Globular Clusters: Individual: Name: 47 Tucanae - Stars: Abundances - Stars: Evolution

Simbad objects: 103

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Number of rows : 103

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 HD 97 PM* 00 05 45.9908619144 -19 40 12.889035125   10.402 9.775 9.41   G5V 61 0
2 NGC 47 GiG 00 14 30.6271903398 -07 10 02.827720392   13.4   12.48 13.0 ~ 26 0
3 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3472 0
4 HD 2665 PM* 00 30 45.4467882867 +57 03 53.626973228 8.66 8.51 7.72     G5IIIw 165 0
5 V* CM Cet LP? 00 33 14.3107315285 -10 43 42.728505105   10.66 9.48 8.84 9.06 G3/5V 85 0
6 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 890 0
7 HD 5426 PM* 00 55 41.0498744897 -33 45 11.454171247   10.32 9.65 9.43 8.76 G(wp) 52 0
8 NGC 362 GlC 01 03 14.26 -70 50 55.6   7.97 6.58     ~ 897 0
9 HD 6268 Pe* 01 03 18.1719480473 -27 52 49.953588224   9.725 9.046 8.601   F/Gw 134 0
10 HD 6755 SB* 01 09 43.0595349996 +61 32 50.293373799 8.48 8.40   7.3   G5 223 0
11 HD 6833 * 01 09 52.2649551382 +54 44 20.273398737 8.81 7.91 6.74     K0IIIbFe-2 185 0
12 HD 7595 SB* 01 15 29.5309284011 -28 15 53.574087229   10.99 9.73     K0/1III 31 0
13 HD 8724 PM* 01 26 17.5944981072 +17 07 35.123836665   9.29 8.34     G5 104 0
14 CD-31 622 PM* 01 32 19.8261382740 -30 40 51.419854376   11.26 10.8     sdG/K 47 0
15 BD-18 271 Pe* 01 37 18.8811363974 -17 29 03.906643856   10.93 9.77     KIIvw 56 0
16 BD-10 548 PM* 02 46 55.7674219947 -10 07 35.112831577   11.162 10.411     Gwl: 44 0
17 CD-30 1121 * 02 57 00.2889252098 -30 24 37.381196782   11.038 10.312     G0 35 0
18 * eps For PM* 03 01 37.6304831834 -28 05 29.376723799   6.68 5.85     G9:V 155 0
19 HD 21581 Pe* 03 28 54.4846692612 -00 25 03.106157430 9.75 9.54 8.71     G8w 116 0
20 HD 23798 Pe* 03 46 45.7222019530 -30 51 13.332706976   9.35 8.32     G8/K1(III)wF0/3 62 0
21 HD 24616 PM* 03 53 59.4643160075 -23 08 13.471799885   7.52 6.71     G8IV/V 89 0
22 HD 26169 Pe* 04 00 52.4402474697 -75 36 11.424174363 9.58 9.53 8.80 8.51 8.73 G3wpec 68 0
23 HD 26297 Pe* 04 09 03.4179730777 -15 53 27.057216777   8.55 7.47 7.09   G5/6IVw 140 0
24 BD+06 648 Pe* 04 13 13.1128198299 +06 36 01.767784301   10.27 9.09 8.58   K0 93 0
25 CD-57 949 * 04 36 40.3921295028 -57 32 40.553967048   10.16 9.26     G5 25 0
26 V* HP Eri LP* 04 38 55.7330333369 -13 20 48.133826226 10.91 9.72 8.33     G8/K0IIIwF7 125 0
27 NGC 1851 GlC 05 14 06.76 -40 02 47.6   8.80 7.23     ~ 1209 0
28 HD 35179 * 05 22 21.0081621823 -14 23 50.065028141   10.46 9.48     G8IV 31 0
29 HD 36702 Pe* 05 31 52.2291028356 -38 33 24.042415815   9.53 8.38     F0wG/K 61 0
30 * phi02 Ori PM* 05 36 54.3881859 +09 17 26.409553 5.70 5.04 4.09 3.33 2.78 G9.5IIIbFe-2.5 335 0
31 HD 37828 Pe* 05 40 54.6448086996 -11 12 00.190392856   7.988 6.869     G8III 85 0
32 HD 251611 PM* 06 05 57.5366070274 +07 19 03.158560957   10.95   10.1   F8 54 0
33 HD 44007 Pe* 06 18 48.5271098810 -14 50 43.424752212   8.85 8.06 7.69   G5(IV)wF3/5 169 0
34 HD 45282 Pe* 06 26 40.7720108507 +03 25 29.794070200 8.71 8.69 8.03     Gwl 138 0
35 HD 55496 Pe* 07 12 11.3777515932 -22 59 00.610613637   9.30 8.40     G(II)wp(Ba) 62 1
36 BD-01 1792 PM* 07 39 50.1120552457 -01 31 20.375257583 10.35 10.05 9.23     G6V 89 0
37 BD-18 2065 ** 07 52 38.0051 -18 35 37.728   10.61 9.75 9.77   ~ 25 0
38 HD 74462 PM* 08 48 20.6518837664 +67 26 59.887115014   9.65 8.69 8.25   G5IV 120 0
39 HD 81223 Pe* 09 20 48.4924265559 -68 07 17.657255325   9.36 8.44     K0wF(7) 34 0
40 HD 81192 Pe* 09 24 45.3354695684 +19 47 11.868330072 8.06 7.50 6.56     G8IIICH 113 0
41 HD 83212 Pe* 09 36 19.9520860588 -20 53 14.744519420   9.582 9.177 7.83   G6/K0IIIwF7 117 0
42 HD 233666 ** 09 42 19.4747877938 +53 28 26.150908010   9.94 9.30     G2w 64 0
43 HD 84903 Pe* 09 47 19.2014975287 -41 27 04.199082703   9.10 8.04     GwA/F(V) 73 0
44 HD 85773 Pe* 09 53 39.2425768656 -22 50 08.422584118   10.51 9.43     Gwl: 85 0
45 HD 87140 PM* 10 04 43.1807990851 +54 20 43.425447455 9.70 9.68 8.98     K0 104 0
46 BD+04 2466 PM* 11 26 49.1890409114 +03 51 51.646284678   11.22 10.67 10.45   KIIvw 67 0
47 HD 99978 Pe* 11 29 37.2854929734 -55 53 44.705656859   9.56 8.61     G5/8(III) 27 0
48 HD 101063 PM* 11 37 40.4030107466 -28 51 04.855827714   10.21 9.45     K5/M0III 62 0
49 V* TY Vir LP* 11 51 50.1113597773 -05 45 44.181741901   9.668 7.97 7.57   G3Ibp 110 0
50 HD 103295 PM* 11 53 37.0223422254 -28 38 13.021084052   10.34 9.56     G5/6III 41 0
51 BD-01 2582 Pe* 11 53 37.3233658419 -02 00 36.726031369   10.29 9.60     CEMP-s 92 0
52 HD 103545 Pe* 11 55 27.1609688264 +09 07 45.021393553   9.91 9.20 9.17   KIIvw 65 0
53 HD 233891 * 11 59 59.0580706990 +51 46 17.599834243   9.63 8.82     G5III: 69 0
54 HD 104893 Pe* 12 04 43.1267206557 -29 11 05.194238731   10.45 9.25     F8/G2(e) 54 0
55 HD 105546 HB* 12 09 02.7215214810 +59 01 05.137542058   9.27 8.61 8.29   G2III: 105 0
56 HD 108317 Pe* 12 26 36.8316698542 +05 18 09.021203658       7.7   G2IVm-5 142 0
57 HD 110184 Pe* 12 40 14.0784174924 +08 31 38.056629204 10.20 9.45 8.27 8.52   KIIvw 125 0
58 HD 111721 PM* 12 51 25.1948813622 -13 29 28.166794065   8.78 7.97     G6V 143 0
59 BD+10 2495 Pe* 12 59 19.9306193437 +09 14 35.638418393   10.44 9.73     G0 65 0
60 CD-32 9096 RG* 13 02 00.5555343528 -33 09 11.199164304   11.54 10.39     KIIvw 15 0
61 BD+12 2546 * 13 04 05.6859313468 +11 18 23.817227089   10.51 9.35     K0 3 0
62 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 2920 0
63 HD 117220 PM* 13 29 35.5671744235 -37 33 35.815376744   9.83 9.04     G5w 36 0
64 BD+03 2782 * 13 29 55.9120276944 +02 45 26.784321371   10.66 9.73     KIIvw 39 0
65 HD 118055 Pe* 13 34 39.9107417779 -16 19 22.709593766   10.10 8.89 8.45   K0wF8 73 0
66 HD 122956 PM* 14 05 13.0245301143 -14 51 25.455585497   8.18 7.25 6.88   G6IV/VwF6 141 0
67 BD+09 2870 PM* 14 16 29.9462486775 +08 27 52.953658087   10.58 9.70     KIIvw 61 0
68 BD+01 2916 Pe* 14 21 45.2616002321 +00 46 59.172388634   10.93 9.65     KIIvw 81 0
69 BD+08 2856 * 14 23 58.1664117100 +08 01 33.336508723   10.90 10.08     KIIvw 57 0
70 HD 126238 Pe* 14 25 29.9570911985 -43 38 36.947126248   8.44 7.68 7.44   G3/8wF0/2 101 1
71 HD 128188 Pe* 14 35 46.8216841520 -11 24 12.261262320   10.9 9.94     G8(w) 29 0
72 HD 128279 Pe* 14 36 48.5106582134 -29 06 46.610625293 8.64 8.63 8.00     Gw 169 0
73 BD+30 2611 * 15 06 53.8283818900 +30 00 36.942401309 11.50 10.37 9.13     G8III 122 0
74 HD 135148 SB* 15 13 17.4566658985 +12 27 25.536244668   10.87 9.39 8.97   CEMP-s 86 0
75 HD 136316 PM* 15 22 17.9429452187 -53 14 15.206019200   8.77 7.65     G0/2IV/V 51 0
76 HD 141531 PM* 15 49 16.4995136367 +09 36 42.408762912   10.31 9.08 8.720   M1V 60 0
77 * s Her PM* 16 30 33.5485765867 +20 28 45.068186901   6.484 5.243     G8.5IIICN-2CH-1Fe-1 124 0
78 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 1970 0
79 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1870 0
80 NGC 6397 GlC 17 40 42.09 -53 40 27.6   7.39 5.17     ~ 1756 1
81 V* V2564 Oph LP? 18 04 40.0713993238 +03 46 44.716089845 9.53 8.59 7.30 6.24 5.43 F6/7V 241 0
82 BD+13 3683 SB* 18 33 16.8451410333 +13 09 25.490354259   11.19   10.0   F5 92 0
83 HD 171496 * 18 36 07.4934207098 -24 26 11.312599970   9.59 8.52     G8IV 65 1
84 HD 175305 Pe* 18 47 06.4424234462 +74 43 31.448124921 8.07 7.93 7.18 6.52 6.03 G5III 189 0
85 * ome Pav PM* 18 58 36.4483714404 -60 12 01.991511383 7.95 6.51 5.14     K2IIICNIV 55 0
86 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1766 0
87 HD 184711 PM* 19 37 11.9255808112 -39 44 37.006580779   9.30 8.05     G5wA/F 104 0
88 HD 187111 Pe* 19 48 39.5745673482 -12 07 19.741286114   8.92 7.75     G8wF8III/IV 128 0
89 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 998 0
90 HD 190287 PM* 20 05 38.2683033701 -34 55 11.945413960   9.23 8.54     G6Vw 55 0
91 HD 358059 ** 20 56 09.1348741356 -13 31 17.689533403   11.016 10.192     G0 46 0
92 CD-62 1346 Pe* 21 06 02.9221670307 -61 33 44.645933103   10.55 9.85 9.56 9.027 CEMP-s 47 0
93 HD 204543 * 21 29 28.2127594590 -03 30 55.356028557   9.17 8.30 7.99   F6/8(V) 124 0
94 HD 206739 PM* 21 44 23.9463878252 -11 46 22.846895572   9.45 8.60 8.14   G5V 74 0
95 BD-09 5831 * 21 45 30.5221952754 -08 24 35.247372930   10.33 9.50 10.08   KIIvw 48 0
96 HD 216143 Pe* 22 50 31.0884300128 -06 54 49.557528724   8.78 7.81 7.44   G2/3(IV)(we) 127 0
97 HD 218857 PM* 23 11 24.5948588495 -16 15 04.029541995   9.60 8.95     G5/8w(a) 101 0
98 HD 220662 * 23 25 41.6302323824 -23 56 20.694528866   11.112 10.081     F8/G3 38 0
99 HD 220838 * 23 27 16.4823484588 -26 58 58.178452827   10.50 9.39     G6/8(III)w 48 0
100 HD 221170 Pe* 23 29 28.8087923676 +30 25 57.847432750 9.43 8.74 7.66     G2IV 259 0
101 HD 222434 SB* 23 40 41.5097940659 -34 41 46.557869908   9.85 8.81     G2/3V 44 0
102 NAME Local Group GrG ~ ~           ~ 6679 0
103 NAME Galactic Bulge reg ~ ~           ~ 3247 0

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2019.11.18-03:36:18

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