2003A&A...397..463U


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET20:07:44

2003A&A...397..463U - Astronomy and Astrophysics, volume 397, 463-472 (2003/1-2)

The Hamburg/SAO Survey for low metallicity blue compact/HII galaxies (HSS-LM). I. The first list of 46 strong-lined galaxies.

UGRYUMOV A.V., ENGELS D., PUSTILNIK S.A., KNIAZEV A.Y., PRAMSKIJ A.G. and HAGEN H.-J.

Abstract (from CDS):

We present the description and the first results of a new project devoted to the search for extremely metal-deficient blue compact/HII-galaxies (BCGs) and to the creation of a well selected large BCG sample with strong emission lines. Such galaxies should be suitable for reliable determination of their oxygen abundance through the measurement of the faint [OIII]λ4363Å line. The goals of the project are two-fold: a) to discover a significant number of new extremely metal-poor galaxies (Z≲1/20Z), and b) to study the metallicity distribution of local BCGs. Selection of candidates for follow-up slit spectroscopy is performed on the database of objective prism spectra of the Hamburg Quasar Survey. The sky region is limited by δ≥0° and bII≤-30°. In this paper we present the results of the follow-up spectroscopy conducted with the Russian 6m telescope. The list of observed candidates contained 52 objects, of which 46 were confirmed as strong-lined BCGs (EW([OIII]λ5007)≥100Å). The remaining five lower excitation ELGs include three BCGs, and two galaxies classified as SBN (Starburst Nucleus) and DANS (Dwarf Amorphous Nucleus Starburst). One object is identified as a quasar with a strong Lyα emission line near λ5000Å (z∼3). We provide a list with coordinates, measured radial velocities, B-magnitudes, equivalent widths EW([OIII]λ5007) and EW(Hβ) and for the 46 strong-lined BCGs the derived oxygen abundances 12+log(O/H). The abundances range between 7.42 and 8.4 (corresponding to metallicities between 1/30 and 1/3Z). The sample contains four galaxies with Z≲1/20Z, of which three are new discoveries. This demonstrates the high efficiency of the new project to find extremely metal-deficient galaxies. The radial velocities of the strong-lined ELGs range between 500 and 19000km/s with a median value of ∼6400km/s. The typical B-magnitudes of the galaxies presented are 17.0-18.0mag

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: abundances - galaxies: distances and redshifts - surveys

VizieR on-line data: <Available at CDS (J/A+A/397/463): table2.dat table3.dat>

CDS comments: SBSG 0335-052W = SBSG 0335-052A. SBSG 0335-052E = SBSG 0335-052B. Table 2 : [SS98] 84 = [SS98c] 84 = HS 0024+2314. Tol 1227-273 is a misprint for Tol 1214-277.

Simbad objects: 52

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Number of rows : 52

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HS 2359+1659 bCG 00 02 09.9 +17 15 59           ~ 8 0
2 LEDA 101429 G 00 26 52.4 +23 31 12           ~ 3 0
3 LEDA 101433 G 00 32 03.11 +18 04 46.1           ~ 14 0
4 SHOC 22 H2G 00 32 18.6200234786 +15 00 14.150465322           ~ 17 0
5 HS 0031+2645 bCG 00 34 19.7 +27 02 09           ~ 1 0
6 HS 0034+3047 bCG 00 37 36.8 +31 04 08           ~ 1 0
7 LEDA 101439 bCG 00 44 20.5 +23 50 00           ~ 3 0
8 HS 0044+3052 bCG 00 47 26.9 +31 09 02           ~ 2 0
9 HS 0048+2744 bCG 00 51 05.9 +28 00 35           ~ 1 0
10 HS 0051+2812 bCG 00 54 23.5 +28 29 09           ~ 1 0
11 HS 0052+2537 bCG 00 54 55.941 +25 53 23.16           ~ 5 0
12 IRAS F00522+2537 IR 00 54 56.0 +25 53 15           ~ 2 0
13 SDSS J005456.38+255307.8 G 00 54 56.387 +25 53 07.85           ~ 17 0
14 LEDA 101443 G 01 01 32.3 +19 03 32           ~ 2 0
15 HS 0103+3219 bCG 01 06 03.6 +32 35 32           ~ 1 0
16 HS 0109+3304 G 01 12 30.61 +33 20 06.2           ~ 2 0
17 LEDA 101449 bCG 01 14 37.59 +21 31 17.7           ~ 9 0
18 LEDA 101450 G 01 16 40.2 +18 05 51           ~ 2 0
19 HS 0119+3059 bCG 01 22 14.721 +31 15 14.47           ~ 3 0
20 HS 0121+1753 bCG 01 24 00.0 +18 09 04           ~ 1 0
21 LEDA 101455 G 01 26 17.2 +16 40 29           ~ 2 0
22 HS 0127+2706 bCG 01 29 47.0 +27 22 20           ~ 1 0
23 HS 0128+2832 bCG 01 31 21.3 +28 48 12           ~ 11 0
24 HS 0131+1649 bCG 01 33 59.1 +17 04 44           ~ 1 0
25 HS 0134+3415 bCG 01 37 13.8 +34 31 12           ~ 8 0
26 EQ 013734+293553 SyG 01 40 24.1 +29 51 05   16.5       ~ 4 0
27 HS 0137+3152 bCG 01 40 41.8 +32 07 19           ~ 1 0
28 UGCA 20 bCG 01 43 14.6 +19 58 51   16       ~ 52 0
29 LEDA 101460 bCG 01 45 54.4 +24 15 54           ~ 3 0
30 HS 0205+3212 bCG 02 08 28.1 +32 27 05           ~ 1 0
31 HS 0248+2001 bCG 02 51 06.8 +20 13 42           ~ 1 0
32 [PBT2001] SBSG 0335-052 W G 03 37 38.40 -05 02 37.5   19.14     18.85 ~ 99 1
33 SBSG 0335-052B G 03 37 44.04 -05 02 40.2   16.77 16.65   16.79 ~ 154 1
34 LEDA 2790884 bCG 08 25 55.521 +35 32 31.96   18.2       ~ 106 1
35 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 1014 1
36 LEDA 39402 H2G 12 17 17.093 -28 02 32.67   17       ~ 127 0
37 NAME CVn I dwA GiC 12 38 40.1 +32 45 59 16.91 16.66 16.73 16.62   ~ 199 0
38 MCG+07-29-060 QSO 14 17 01.716 +43 30 13.52   15.6       ~ 155 0
39 HS 2236+1344 bCG 22 38 31.1190793853 +14 00 29.769874980           ~ 34 0
40 HS 2252+2032 bCG 22 55 11.6 +20 48 48           ~ 1 0
41 SDSS J225515.31+180835.1 bCG 22 55 15.318 +18 08 35.17           ~ 2 0
42 IRAS F22565+2610 IR 22 58 57.2 +26 26 24           ~ 3 0
43 HS 2258+2046 bCG 23 00 32.2 +21 02 30           ~ 1 0
44 HS 2258+2215 bCG 23 00 43.2 +22 31 13           ~ 1 0
45 HS 2259+2357 bCG 23 01 38.027 +24 14 05.40           ~ 2 0
46 HS 2304+2255 bCG 23 07 18.9 +23 11 54           ~ 1 0
47 HS 2311+2631 bCG 23 13 48.0 +26 48 02           ~ 1 0
48 HS 2336+1800 bCG 23 38 46.8 +18 17 20           ~ 1 0
49 LEDA 1637449 bCG 23 42 38.2 +20 51 32           ~ 3 0
50 SDSS J235005.95+163506.9 bCG 23 50 05.959 +16 35 06.93           ~ 2 0
51 HS 2348+2920 bCG 23 50 50.4 +29 37 03           ~ 2 0
52 AGC 332347 bCG 23 54 56.7 +27 49 59           ~ 15 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-20:07:44

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