2003AJ....126.1849B


Query : 2003AJ....126.1849B

2003AJ....126.1849B - Astron. J., 126, 1849-1860 (2003/October-0)

Line-of-sight reddening predictions: zero points, accuracies, the interstellar medium, and the stellar populations of elliptical galaxies.

BURSTEIN D.

Abstract (from CDS):

Revised (B-V)0-Mg2data, which are used to test reddening predictions, are presented for 402 elliptical galaxies. These reddening predictions can tell us both what the intrinsic errors are in this relationship among gE galaxy stellar populations as well as details of nearby structure in the interstellar medium (ISM) of our Galaxy, and of the intrinsic errors in reddening predictions. Using least-squares fits, the explicit 1 σ errors in reddenings predicted by the Burstein-Heiles (BH) method and the Schlegel and coworkers (IR) method are calculated, as well as the 1 σ observational error in the (B-V)0-Mg2for gE galaxies. It is found that in directions with E(B-V)<0.100 mag (where most of these galaxies lie), 1 σ errors in the IR reddening predictions are 0.006-0.009 mag in E(B-V), those for BH reddening predictions are 0.011 mag, and the 1 σ agreement between the two reddening predictions is 0.007 mag. The IR predictions have an accuracy of 0.010-0.011 mag in directions with E(B-V)≥0.100 mag, significantly better than those of the BH predictions (0.024-0.025). Both methods yield good evidence that gas-to-dust variations that vary by a factor of 3, both high and low, exist along many lines of sight in our Galaxy. Both methods also predict many directions with E(B-V)<0.015 mag, despite the difference in zero point that each has assumed. The ∼0.02 higher reddening zero point in E(B-V) previously determined by Schlegel and coworkers is confirmed, primarily at the Galactic poles. Independent evidence of reddening at the north Galactic pole (NGP) is reviewed, with the conclusion that directions still exist at the NGP that have E(B-V)≪0.01. Two lines of evidence suggest that IR reddenings are overpredicted in directions with high gas-to-dust ratios. As high gas-to-dust directions in the ISM also include the Galactic poles, this overprediction is the likely cause of the E(B-V)∼0.02 mag larger IR reddening zero point relative to that of BH.

Abstract Copyright:

Journal keyword(s): ISM: Dust, Extinction - Galaxies: Stellar Content

CDS comments: In table 1, NGC 3156 is a misprint for NGC 3136.

Simbad objects: 61

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Number of rows : 61
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 ESO 409-12 BiC 00 04 42.2273471616 -30 29 01.383900936   14.08 9.29 12.23   ~ 36 0
2 NGC 83 GiG 00 21 22.4109059928 +22 26 00.963734388   14.3       ~ 79 0
3 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 2091 2
4 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11842 1
5 IC 1625 BiC 01 07 42.6174520104 -46 54 27.452200752   13.11   12.05   ~ 45 0
6 NGC 641 GiG 01 38 39.2298692928 -42 31 39.033573204   13.34   11.83   ~ 56 0
7 NGC 708 BiC 01 52 46.482 +36 09 06.53 14.85 14.27 13.29 12.67 12.09 ~ 226 3
8 NGC 822 GiG 02 06 39.1347842424 -41 09 24.259095468   14.25   12.81   ~ 31 0
9 NGC 821 G 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 556 0
10 NGC 1060 GiG 02 43 15.045 +32 25 30.04 13.71 13.00 11.81     ~ 98 1
11 IC 310 rG 03 16 42.9787569912 +41 19 29.615579544   14.3       ~ 247 2
12 NGC 1272 GiG 03 19 21.300 +41 29 26.13   14.5 13.66     ~ 112 0
13 NGC 1273 GiG 03 19 26.7462872568 +41 32 25.750682808   14.7 14.20     ~ 60 0
14 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2102 1
15 NGC 1278 GiG 03 19 54.1310495136 +41 33 48.273592464   14.4 14.14     ~ 88 0
16 NGC 1282 GiC 03 20 12.1042637304 +41 22 01.103677644   14.3       ~ 61 0
17 NGC 1283 AGN 03 20 15.5216891688 +41 23 55.110839136   15.6 12.6     ~ 44 0
18 NGC 1293 GiG 03 21 36.4592749392 +41 23 34.123734528   15.0       ~ 42 0
19 NGC 1549 GiP 04 15 45.223 -55 35 32.50 11.22 10.48 9.79 9.08   ~ 230 1
20 NGC 1713 AGN 04 58 54.6092804904 -00 29 20.290542972   13.88       ~ 60 0
21 NGC 2012 G 05 22 35.4022303416 -79 51 06.643323648   14.49   13.00   ~ 29 0
22 NGC 2292 IG 06 47 39.8 -26 44 46   11.82   10.42   ~ 44 1
23 NGC 2293 IG 06 47 42.912 -26 45 15.70   11.70   12.0 11.3 ~ 67 1
24 NGC 2305 GiG 06 48 37.2713054112 -64 16 23.745616176   12.82   10.98   ~ 72 0
25 NGC 2325 AGN 07 02 40.4028077304 -28 41 50.060434704   12.17   10.46   ~ 109 0
26 NGC 2380 GiG 07 23 54.749 -27 31 44.62   12.52   10.77   ~ 53 0
27 ESO 208-21 GiG 07 33 56.2880839056 -50 26 35.057648832   12.01   10.39   ~ 77 0
28 NGC 2434 GiG 07 34 51.1504542360 -69 17 02.996020032 12.82 12.50 11.26 10.84   ~ 181 1
29 IC 2311 GiG 08 18 45.9765656760 -25 22 11.117025048   12.49   11.00   ~ 50 0
30 NGC 2663 GiG 08 45 08.247 -33 47 41.14   11.85 12.33 9.75   ~ 98 1
31 NGC 2887 GiG 09 23 24.0933164088 -63 48 45.162044892   12.51   11.06   ~ 43 0
32 NGC 2888 GiG 09 26 19.6702624128 -28 02 06.496786104   13.28   12.65   ~ 44 0
33 NGC 2904 GiG 09 30 17.0131250472 -30 23 06.114319404   13.69   12.04   ~ 46 0
34 NGC 3087 GiG 09 59 08.6617003728 -34 13 30.853679304   12.69 11.55 11.02   ~ 78 0
35 NGC 3108 GiG 10 02 29.0239265520 -31 40 38.785663704   12.48   11.03   ~ 62 0
36 NGC 3136 GiG 10 05 48.0247938960 -67 22 40.395096300   11.60 11.00 10.05   ~ 97 0
37 ESO 92-13 GiG 10 10 12.9524527944 -67 00 18.067788360   13.32   11.75   ~ 51 0
38 NGC 3250 GiG 10 26 32.2832570136 -39 56 38.471500356   12.26 11.03 10.57   ~ 91 0
39 NGC 3257 GiG 10 28 47.1211653816 -35 39 29.380364640   14.05 12.54 12.53   ~ 44 0
40 NGC 3258 BiC 10 28 53.588 -35 36 19.98   12.50 11.72 10.86   ~ 177 0
41 NGC 3260 GiG 10 29 06.3956235984 -35 35 42.453138552   13.72 14.39 12.11   ~ 53 0
42 ESO 264-31 BiC 10 40 33.186 -46 11 27.41   14.44   12.52   ~ 36 0
43 ESO 376-7 G 10 41 11.4522084720 -37 08 37.133593800   13.80   12.28   ~ 36 0
44 ESO 318-21 GiG 10 53 05.9569438464 -40 19 44.791775544   13.91   12.27   ~ 46 0
45 NGC 3557 rG 11 09 57.653 -37 32 21.02   11.50 10.40 9.79   ~ 266 2
46 NGC 3610 GiG 11 18 25.2827189856 +58 47 10.433735988   11.4       ~ 295 0
47 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1101 0
48 NGC 4872 AGN 12 59 34.1212116072 +27 56 48.678716616 15.58 14.7 14.10 14.092 13.423 ~ 132 0
49 NGC 4946 GiG 13 05 29.3769395952 -43 35 28.165516872   13.31   11.61   ~ 57 0
50 NGC 4976 GiG 13 08 37.526 -49 30 23.07   11.05 10.20     ~ 100 1
51 NGC 5011 GiG 13 12 51.8644891368 -43 05 46.645742832   12.14 11.33 10.51   ~ 86 0
52 NGC 5017 GiG 13 12 54.5176056816 -16 45 56.864317068   13.2   12.49   ~ 64 0
53 NGC 5090 rG 13 21 12.8452443792 -43 42 16.841584476   12.59 11.51 10.84   ~ 192 1
54 ESO 270-14 GiG 13 28 27.2926104552 -44 10 19.032038904   14.40   12.87   ~ 28 0
55 NGC 6483 G 17 59 30.7964765736 -63 40 07.648055040   13.22   11.68   ~ 46 0
56 NGC 6721 GiG 19 00 50.815 -57 45 33.77   13.23 12.04 11.48   ~ 68 0
57 NGC 6876 GiG 20 18 19.146 -70 51 31.80   11.76 11.54 10.45   ~ 124 0
58 NGC 7192 GiG 22 06 50.1107894976 -64 18 58.721070096   12.21 11.21 10.77   ~ 136 0
59 IC 1459 GiP 22 57 10.6071797352 -36 27 43.992307260   10.96 11.85 9.34 10.3 ~ 602 2
60 NGC 7617 GiG 23 20 08.9642089560 +08 09 56.684464488   15.1       ~ 64 0
61 IC 5328 G 23 33 16.3995184104 -45 00 57.131035308   12.21 11.03 10.82   ~ 90 0

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2022.07.06-09:21:14

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