2007A&A...464..853L


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.20CEST12:39:25

2007A&A...464..853L - Astronomy and Astrophysics, volume 464, 853-857 (2007/3-4)

Potential of colors for determining age and metallicity of stellar populations.

LI Z., HAN Z. and ZHANG F.

Abstract (from CDS):

Colors are usually not used for constraining stellar populations because they are thought to have the well-known age-metallicity degeneracy, but some recent works show that colors can also be used. A simple stellar population synthesis model is widely used, but there is no analysis for its colors. We try to find colors that can potentially be used to determine the age and metallicity of stellar populations by the standard model. Principal component analysis and relative sensitive parameter techniques are used in this work. U-K, U-H, U-J, B-K, B-H, U-I, B-J, and V-K are found to be more important for studying populations than others. Pairs of colors such as B-K and B-V are found to be able to disentangle the stellar age-metallicity degeneracy via the high-resolution model, while pairs such as U-K and R-I may be used instead when the low-resolution model is used. Furthermore, the u-g and r-i colors of the low-resolution model seem to have the same potential, but there are no such colors for the high-resolution one. Some colors have been shown to have the potential to determine the age and metallicity of stellar populations, but relative metallicity and age sensitivities of colors in different stellar population synthesis models are usually different. In addition, minor star formations will make star systems look younger and more metal rich than their dominating populations.

Abstract Copyright:

Journal keyword(s): galaxies: stellar content - galaxies: formation - galaxies: elliptical and lenticular, cD

Simbad objects: 54

goto Full paper

goto View the reference in ADS

Number of rows : 54

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NGC 584 GiP 01 31 20.755 -06 52 05.02 11.93 11.44 10.48     ~ 356 2
2 NGC 596 GiG 01 32 51.906 -07 01 53.54   11.5       ~ 224 0
3 2E 0150.5-1358 ClG 01 53 00.40 -13 44 18.0           ~ 385 0
4 NGC 720 GiG 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 479 0
5 NGC 821 G 02 08 21.150 +10 59 41.53   12.210 11.310 10.739 9.744 ~ 523 0
6 NGC 1052 GiP 02 41 04.79851 -08 15 20.7517 11.84 11.41 10.47 10.71   ~ 1092 2
7 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1409 1
8 NGC 1395 SyG 03 38 29.789 -23 01 39.69   10.71   8.99   ~ 252 0
9 NGC 1404 GiP 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 644 1
10 NGC 1407 GiG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 503 1
11 NGC 1537 GiG 04 13 40.706 -31 38 43.48   11.54   10.11   ~ 90 0
12 NGC 1549 GiP 04 15 45.223 -55 35 32.50 11.22 10.48 9.79 9.08   ~ 219 1
13 NGC 1600 GiG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 314 0
14 NGC 1700 GiG 04 56 56.347 -04 51 56.64   12   11.14   ~ 322 1
15 IC 459 GiC 07 10 38.6794159714 +50 10 38.334573495   15.5       ~ 11 0
16 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 449 2
17 NGC 2974 Sy2 09 42 33.267 -03 41 56.82   12.19   10.77   ~ 400 0
18 NGC 2986 GiG 09 44 16.044 -21 16 41.84   11.60 10.93 9.96   ~ 154 0
19 NGC 3115 GiG 10 05 13.978 -07 43 06.89   11   9.37   ~ 896 2
20 NGC 3193 GiP 10 18 24.884 +21 53 38.32 12.29 11.83 10.88 12.19   ~ 263 1
21 NGC 3250 GiG 10 26 32.278 -39 56 38.07   12.26 11.03 10.57   ~ 86 0
22 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 712 1
23 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1360 0
24 NGC 3557 rG 11 09 57.653 -37 32 21.02   11.50 10.40 9.79   ~ 248 2
25 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 464 0
26 NGC 3610 GiG 11 18 25.276 +58 47 10.49   11.4       ~ 273 0
27 NGC 3962 LIN 11 54 40.104 -13 58 29.95   13.16 12.16 11.15   ~ 138 0
28 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 381 2
29 NGC 4261 LIN 12 19 23.21607184 +05 49 29.7000920   13.92 12.87     ~ 1082 0
30 NGC 4278 LIN 12 20 06.82563 +29 16 50.7124 11.54 11.09 10.16     ~ 871 2
31 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 779 0
32 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1604 2
33 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 991 1
34 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1917 2
35 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 584 1
36 NGC 4478 GiP 12 30 17.439 +12 19 42.88 12.82 12.36 11.45   10.17 ~ 463 1
37 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6003 3
38 NGC 4494 GiP 12 31 24.034 +25 46 29.93   10.55 9.74     ~ 441 0
39 M 89 LIN 12 35 39.8 +12 33 23 11.29 10.73 9.75     ~ 903 2
40 NGC 4564 GiG 12 36 26.994 +11 26 21.55 12.51 12.05 11.12     ~ 548 1
41 NGC 4589 LIN 12 37 25.0 +74 11 31   12.0       ~ 255 1
42 M 59 GiG 12 42 02.322 +11 38 48.95   11.0       ~ 641 0
43 NGC 4636 LIN 12 42 49.867 +02 41 16.01   12.62 11.84     ~ 1022 1
44 M 60 GiP 12 43 40.008 +11 33 09.40   10.3       ~ 1217 0
45 NGC 4660 GiP 12 44 31.9848549289 +11 11 25.730688043   12.1       ~ 390 0
46 NGC 4697 GiG 12 48 35.8992791100 -05 48 02.497675635   10.97   9.83   ~ 779 0
47 NGC 4696 BiC 12 48 49.277 -41 18 39.92   11.21   10.7   ~ 445 3
48 NGC 5322 SyG 13 49 15.24 +60 11 25.8   11.3       ~ 374 2
49 NGC 5576 GiP 14 21 03.691 +03 16 15.78 12.25 11.85 10.96     ~ 291 1
50 NGC 5813 LIN 15 01 11.265 +01 42 07.09 12.00 11.45 10.46 10.06   ~ 560 1
51 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 751 1
52 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 484 3
53 NGC 7144 GiG 21 52 42.4886891987 -48 15 13.724134706   11.87 10.71 10.39   ~ 139 1
54 NGC 7507 GiG 23 12 07.595 -28 32 22.70   11.60   9.98   ~ 162 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2007A&A...464..853L and select 'bookmark this link' or equivalent in the popup menu


2019.09.20-12:39:25

© Université de Strasbourg/CNRS

    • Contact