2008AJ....135...92B

Query : 2008AJ....135...92B

2008AJ....135...92B - Astron. J., 135, 92-98 (2008/January-0)

MMT extremely metal-poor galaxy survey. I. An efficient technique to identify metal-poor galaxies.

BROWN R.W., KEWLEY L.J. and GELLER M.J.

Abstract (from CDS):

We demonstrate a successful strategy for identifying extremely metal-poor galaxies. Our preliminary survey of 24 candidates contains 10 metal-poor galaxies of which 4 have, some of the lowest-metallicity blue compact galaxies known to date. Interestingly, our sample of metal-poor galaxies have systematically lower metallicity for their luminosity than comparable samples of blue compact galaxies, dwarf irregulars, and normal star-forming galaxies. Our metal-poor galaxies share very similar properties, however, with the host galaxies of nearby long-duration gamma-ray bursts (GRBs), including similar metallicity, stellar ages, and star formation rates. We use Hβ to measure the number of OB stars present in our galaxies and estimate a core-collapse supernova rate of ∼10–3 yr–1. A larger sample of metal-poor galaxies may provide new clues about the environment where GRBs form and may provide a list of potential GRB hosts.

Abstract Copyright: ∼

Journal keyword(s): galaxies: abundances - galaxies: starburst - gamma rays: bursts

Simbad objects: 34

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Number of rows : 34
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 [PBT2001] SBSG 0335-052 W G 03 37 38.40 -05 02 37.5   19.14     18.85 ~ 110 1
2 [GPM2009] J0519+0007 G 05 19 02.6953532514 +00 07 29.106797166           ~ 23 0
3 EQ J0809+1729 bCG 08 09.0 +17 29           ~ 3 0
4 US 1442 Sy1 08 40 29.9112912216 +47 07 10.241384412   18.2       ~ 68 0
5 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
6 Z 153-5 AG? 09 56 46.047 +28 49 43.77 14.82 14.74 14.59 14.55 26.509 ~ 252 1
7 SDSS J100539.35+315441.6 G 10 05 39.3490624776 +31 54 41.729644512           ~ 1 0
8 [ITS2007] 52339-578-60 EmG 10 44 57.79689 +03 53 13.1469           ~ 65 0
9 SDSS J120955.67+142155.7 G 12 09 55.68 +14 21 55.7           ~ 2 0
10 SDSS J123944.58+145612.8 G 12 39 44.5858152072 +14 56 12.569226936           ~ 4 0
11 SDSS J124638.82+350115.1 G 12 46 38.82 +35 01 15.1           ~ 2 0
12 SDSS J124709.24+325118.6 G 12 47 09.2465215968 +32 51 18.472930488           ~ 1 0
13 SDSS J133424.52+592057.0 G 13 34 24.53 +59 20 57.0           ~ 2 0
14 SDSS J135641.64+654748.8 G 13 56 41.64 +65 47 48.8           ~ 1 0
15 SDSS J140439.28+542136.8 G 14 04 39.2783375808 +54 21 36.871887888           ~ 2 0
16 SDSS J141333.54+463234.0 WD? 14 13 33.5345473704 +46 32 34.041787620           ~ 3 0
17 SDSS J142250.72+514516.5 G 14 22 50.72 +51 45 16.5           ~ 4 0
18 SDSS J143345.98-025602.1 G 14 33 45.9838717512 -02 56 02.164303392           ~ 2 0
19 SDSS J144158.31+291434.2 G 14 41 58.32 +29 14 34.2           ~ 4 0
20 Z 193-4 H2G 14 50 56.495 +35 34 18.27   14.5 14.83     ~ 212 0
21 SDSS J145621.69+503522.9 G 14 56 21.6798073584 +50 35 22.718058684           ~ 1 0
22 SDSS J150316.52+111056.9 G 15 03 16.5267690744 +11 10 56.948072484           ~ 2 0
23 SDSS J150535.89+314639.4 G 15 05 35.885 +31 46 39.42           ~ 4 0
24 SDSS J151221.07+054911.2 G 15 12 21.077 +05 49 11.20           ~ 5 0
25 SDSS J152802.62+240425.6 G 15 28 02.62 +24 04 25.6           ~ 1 0
26 SDSS J154742.22-005554.2 G 15 47 42.2159081688 -00 55 54.404394276           ~ 1 0
27 SDSS J160238.71+444923.8 G 16 02 38.71 +44 49 23.8           ~ 1 0
28 UCM 1612+1308 EmG 16 15 17.02165 +13 01 33.0873   18.05       ~ 22 0
29 SDSS J165835.08+192415.3 G 16 58 35.08 +19 24 15.3           ~ 1 0
30 SDSS J172955.61+534338.7 G 17 29 55.6088067552 +53 43 38.679806136           ~ 2 0
31 SDSS J211613.97-000851.3 G 21 16 13.9469785632 -00 08 51.618785496           ~ 2 0
32 SDSS J221912.56+140602.8 G 22 19 12.5547043320 +14 06 02.744215200           ~ 1 0
33 SDSS J225900.86+141343.5 G 22 59 00.8645360880 +14 13 43.518344988           ~ 4 0
34 NAME Local Group GrG ~ ~           ~ 9325 0

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