2006AJ....132..596G

Query : 2006AJ....132..596G

2006AJ....132..596G - Astron. J., 132, 596-607 (2006/August-0)

Star formation in satellite galaxies.

GUTIERREZ C.M., ALONSO M.S., FUNES J.G. and RIBEIRO M.B.

Abstract (from CDS):

We present narrowband observations of the Hα emission in a sample of 31 satellites orbiting isolated giant spiral galaxies. The sample studied spans the range -19 mag<MB←15 mag. Hα emission was detected in all the spiral and irregular objects with fluxes in the range 1.15-49.80x10–14 ergs.cm–2.s–1. The average and maximum values for the current star formation rates are 0.68 and 3.66 M☉.yr–1, respectively. Maps of the spatial distribution of ionized gas are presented. The star-forming regions show a rich structure in which frequently discrete complexes are imposed over more diffuse structures. In general, the current star formation rates are smaller than the mean values in the past, obtained from the stellar content; this probably indicates a declining rate with time in the generation of new stars. However, the reserve of gas is enough to continue fueling the current levels of star formation activity for at least another Hubble time. Four of the objects (NGC 2718b, NGC 4541e, and NGC 5965a1 and NGC 5965a2) with higher current star formation rates show clear signs of interaction with close companions of comparable brightness at projected distances of 25, 20, and 2 kpc, respectively. The only two galaxies in our sample that do not show star formation activity are members of these interacting systems, and it is unclear if this is a consequence of intrinsic properties (both are early Hubble types) or if it is related to possible disruption of the external parts due to the interaction. In the case of the pair NGC 2718a-2718b there are indications of gas transport between the galaxies.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Evolution - Galaxies: Fundamental Parameters - Galaxies: Photometry - Galaxies: Structure

Simbad objects: 64

goto Full paper

goto View the references in ADS

Number of rows : 64
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ZSFW N488 c G 01 21 06.5 +05 25 36   16.60 15.61     ~ 4 0
2 NGC 488 GiG 01 21 46.7967133224 +05 15 24.623017524   15.0       ~ 299 0
3 NGC 772 GiP 01 59 19.5557148984 +19 00 27.475677216 11.35 11.09 10.31 10.23 9.38 ~ 339 1
4 ZSFW N772 c G 02 01 07.2 +19 40 25   16.22 15.43     ~ 4 0
5 ZSFW N772 b G 02 02 16.9 +19 10 46           ~ 4 0
6 GD 50 WD* 03 48 50.1859724280 -00 58 32.290187664 12.596 13.787 14.063 14.210 14.388 DA1.2 272 1
7 UGC 2966 AG? 04 08 47.133 +08 30 56.29   16.54 15.77     ~ 22 0
8 NGC 1517 AG? 04 09 11.9190729048 +08 38 55.936662612   14.3       ~ 56 1
9 NGC 1620 GiG 04 36 37.3587737352 -00 08 36.824388684   12.5   12.1 12.2 ~ 147 0
10 MCG+00-12-059 LSB 04 37 37.64712 -00 17 37.7628   15.74   14.84   ~ 28 0
11 NGC 1961 LIN 05 42 04.6327819680 +69 22 42.411028872   11.73 10.99     ~ 362 3
12 ZSFW N1961 b G 05 42 35.2 +69 14 28   15.82 14.88     ~ 5 0
13 ZSFW N1961 c G 05 43 24.9 +69 25 24   4.94 14.18     ~ 5 0
14 ZSFW N1961 a G 05 44 23.8 +69 17 20   14.98 14.14     ~ 6 0
15 ZSFW N2424 b G 07 39 55.4 +39 02 18           ~ 3 0
16 NGC 2424 LIN 07 40 39.2939840088 +39 13 59.879590860   13.9       ~ 85 0
17 EGGR 344 WD* 07 53 27.2601412872 +52 29 31.468181352 15.367 15.93 15.674 15.511 15.350 DC 57 0
18 BD+75 325 HS* 08 10 49.4903003712 +74 57 57.931973676 8.002 9.23 9.50 9.698 9.884 sdO5 267 0
19 UGC 4703 A G 08 58 25.09 +06 20 05.0   17.32 16.71     ~ 14 1
20 Z 33-32 AG? 08 58 29.864 +06 19 17.26   16.23 15.69     ~ 42 0
21 NGC 2718 AGN 08 58 50.468 +06 17 34.78   14.97 14.24     ~ 102 1
22 ZSFW N2775 a G 09 06 34.2 +06 18 12   15.48 14.87     ~ 4 0
23 NGC 2775 AG? 09 10 20.1334093488 +07 02 16.874157048   11.417 10.481 9.920 8.994 ~ 377 0
24 NGC 2777 AG? 09 10 41.887 +07 12 24.12   13.9       ~ 67 1
25 NGC 2916 Sy2 09 34 57.5933209584 +21 42 18.960584796 12.81 12.74 12.05     ~ 162 1
26 ZSFW N2916 a G 09 35 05.6 +21 38 05           ~ 3 0
27 NGC 3043 GiG 09 56 14.8639982064 +59 18 25.711853148   13.30       ~ 96 0
28 LEDA 28747 AG? 09 57 22.420 +58 59 28.75   16       ~ 15 0
29 LEDA 1522913 G 10 12 58.436 +17 01 50.04   16.3       ~ 10 0
30 NGC 3154 G 10 13 01.2763459536 +17 02 02.794875936   14.3       ~ 54 1
31 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 731 0
32 ZSFW N3735 a G 11 33 09.1 +70 23 28   15.3       ~ 4 0
33 NGC 3735 Sy2 11 35 57.2748856320 +70 32 07.951921080   12.4       ~ 202 2
34 NGC 4030 EmG 12 00 23.6102390784 -01 06 00.197099136   11.42   10.3 10.4 ~ 361 1
35 ZSFW N4030 b G 12 00 49.8 -00 32 00   17.0       ~ 4 0
36 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
37 NGC 4541 Sy2 12 35 10.6675039056 -00 13 16.014388044   14.0       ~ 58 0
38 UGC 7755 GiG 12 35 38.68407 -00 12 21.6654   15.1       ~ 29 0
39 UGC 7755 A EmG 12 35 42.3599294640 -00 12 53.105982048   15.1 14.95     ~ 27 0
40 Z 14-73 G 12 35 43.6329281352 -00 13 25.691483028   16.71 16.16     ~ 18 0
41 BD+25 2534 HS* 12 37 23.5161671712 +25 03 59.867922240 9.117 10.26 10.59 10.642 10.809 sdB1(k) 268 0
42 NGC 4725 Sy2 12 50 26.5716367992 +25 30 02.733090588   13.45 12.44     ~ 727 2
43 ZSFW N4725 a G 12 51 45.3 +25 46 27   13.01 12.33     ~ 5 0
44 HZ 44 HS* 13 23 35.2629445608 +36 07 59.544140304 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 439 0
45 ZSFW N5248 a G 13 35 41.5 +08 58 06   15.25 14.72     ~ 5 0
46 NGC 5248 G 13 37 32.0145074088 +08 53 06.496982448   11.4       ~ 554 0
47 ZSFW N5248 b G 13 38 30.2 +08 26 40           ~ 3 0
48 NGC 5899 Sy2 15 15 03.252 +42 02 59.47   14.19 13.21     ~ 219 0
49 NGC 5900 GiP 15 15 05.017 +42 12 35.47   14.43 13.39     ~ 113 0
50 NGC 5965 SyG 15 34 02.3002830024 +56 41 08.509684740   13.4       ~ 133 0
51 [GA2004] NGC 5965a2 G 15 34 13 +57 17.1   17.19 16.50     ~ 2 1
52 [GA2004] NGC 5965a1 G 15 34 13 +57 17.1   16.29 15.86     ~ 2 1
53 NVSS J153412+571655 rG 15 34 13.3862564640 +57 17 07.282532472   15.8       ~ 79 1
54 ZSFW N5962 d G 15 36 29.8 +16 26 09   15.55 14.78     ~ 4 0
55 NGC 5962 GiP 15 36 31.6809457296 +16 36 27.933030504 12.04 11.98 11.34     ~ 258 1
56 BD+33 2642 pA* 15 51 59.8854348048 +32 56 54.329485272 9.806 10.61 10.73 10.884 10.961 O7p 456 0
57 ZSFW N6181 a G 16 31 23.8 +20 11 08   14.46 13.75     ~ 5 0
58 NGC 6181 H2G 16 32 20.96927 +19 49 35.7710   12.7       ~ 258 1
59 NGC 6967 Sy2 20 47 34.0952387568 +00 24 41.893858548   14.3 12.8     ~ 55 0
60 UGC 11813 LSB 21 47 31.26168 +22 09 49.9730   17       ~ 30 0
61 NGC 7137 AG? 21 48 13.0542933936 +22 09 34.505402508   13.3       ~ 92 0
62 NGC 7678 AGN 23 28 27.8628511800 +22 25 16.568913432   15.3       ~ 212 1
63 ZSFW N7678 a G 23 28 44.8 +22 13 32   15.30 14.86     ~ 6 0
64 NAME Local Group GrG ~ ~           ~ 9325 0

To bookmark this query, right click on this link: simbad:objects in 2006AJ....132..596G and select 'bookmark this link' or equivalent in the popup menu