1997A&A...324..490B

Query : 1997A&A...324..490B

1997A&A...324..490B - Astronomy and Astrophysics, volume 324, 490-504 (1997/8-2)

The determination of the star formation rate in galaxies.

BARBARO G. and POGGIANTI B.M.

Abstract (from CDS):

A spectrophotometric model able to compute the integrated spectrum of a galaxy, including the contribution both of the stellar populations and of the ionized interstellar gas of the HII regions powered by young hot stars, has been used to study several spectral features and photometric quantities in order to derive calibrations of the star formation history of late type galaxies. Attention has been paid to analyze the emission of the Balmer lines and the [OII]λ3727 line to test their attitude at providing estimates of the present star formation rate in galaxies. Other features, like D4000 and the equivalent width of the Hδ line, influenced by the presence of intermediate age stars, have been considered. Several ways of estimating the star formation rates in normal galaxies are discussed and some considerations concerning the applicability of the models are presented. Criteria have been also studied for ascertaining the presence of a burst, current or ended not long ago. Bursts usually hinder the determination of the past star formation rate.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: stellar content - galaxies: fundamental parameters - HII regions

Simbad objects: 43

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Number of rows : 43
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 1357 Sy2 03 33 17.0545498128 -13 39 50.970066984   12.44   11.8 11.3 ~ 146 0
2 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1241 3
3 NGC 1832 Sy2 05 12 03.3433348776 -15 41 16.021694220   12.2   11.07 11.8 ~ 237 1
4 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 376 0
5 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 564 3
6 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 769 0
7 NGC 2775 AG? 09 10 20.1334093488 +07 02 16.874157048   11.417 10.481 9.920 8.994 ~ 356 0
8 NGC 2798 GiP 09 17 22.9 +42 00 00 13.03 13.04 12.32     ~ 325 3
9 APG 283 PaG 09 17 26.99 +41 59 48.8   12.2       ~ 193 1
10 NGC 2905 H2G 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1116 3
11 NGC 3147 Sy2 10 16 53.6388580752 +73 24 02.641798224   11.43 10.61     ~ 490 2
12 NGC 3245 GiP 10 27 18.3864983136 +28 30 26.621599932   11.6       ~ 346 0
13 NGC 3303 LIN 10 37 00.0631479552 +18 08 08.888744688   14.5       ~ 79 0
14 NGC 3310 AGN 10 38 45.85707 +53 30 11.8940   12.45 12.15     ~ 773 1
15 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 819 1
16 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1463 0
17 M 65 GiP 11 18 55.9084654776 +13 05 32.300703672   9.6       ~ 445 1
18 M 66 GiP 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1386 4
19 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 978 4
20 NAME NGC 3690 West GiP 11 28 31.02 +58 33 40.7   11.8       ~ 629 4
21 NAME NGC 3690 East AGN 11 28 33.07 +58 33 54.2   11.8       ~ 631 4
22 UGC 6697 GiG 11 43 49.1088652488 +19 58 05.954438316 13.96 14.35 13.59 13.29   ~ 227 3
23 NGC 3921 AG? 11 51 06.8803989360 +55 04 43.414457484   13.4 12.64     ~ 246 0
24 NGC 3941 Sy2 11 52 55.3609498656 +36 59 10.716212904   11.45 11.62 9.97   ~ 244 0
25 NGC 4262 GiG 12 19 30.5694336288 +14 52 39.517143276 13.00 12.49 11.55     ~ 356 1
26 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1125 1
27 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2094 2
28 NGC 4485 GiP 12 30 31.113 +41 42 04.22 12.10 12.42 11.93 11.93   ~ 284 2
29 NGC 4648 GiG 12 41 44.3891511144 +74 25 15.700353240   12.6       ~ 117 0
30 NGC 4631 GiP 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1095 2
31 NGC 4670 AG? 12 45 17.150 +27 07 31.76   12.6 12.90     ~ 259 0
32 NGC 4750 LIN 12 50 07.3113940944 +72 52 28.653179520   11.8       ~ 139 0
33 NGC 4775 EmG 12 53 45.707 -06 37 19.73   12.3   11.19 12.0 ~ 158 0
34 Mrk 59 AGN 12 59 00.288 +34 50 42.45           ~ 317 2
35 NGC 4861 H2G 12 59 02.340 +34 51 33.98   12.90 12.32     ~ 383 2
36 NGC 4889 EmG 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 707 1
37 NGC 5248 GiG 13 37 32.0145074088 +08 53 06.496982448   11.4       ~ 508 0
38 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 552 3
39 NGC 6181 GiG 16 32 21.1 +19 49 29   12.7       ~ 248 0
40 NGC 6217 AGN 16 32 39.2100852960 +78 11 53.487076092   14.37 13.88     ~ 303 0
41 NGC 6643 AG? 18 19 46.370 +74 34 06.23   11.80       ~ 307 1
42 NGC 7714 GiP 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 765 1
43 APG 284 PaG 23 36 19 +02 09.3   12.6       ~ 607 0

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