2008ApJ...685..904P

Query : 2008ApJ...685..904P

2008ApJ...685..904P - Astrophys. J., 685, 904-914 (2008/October-1)

Outliers from the mass-metallicity relation. I. A sample of metal-rich dwarf galaxies from SDSS.

PEEPLES M.S., POGGE R.W. and STANEK K.Z.

Abstract (from CDS):

We have identified a sample of 41 low-mass high-oxygen abundance outliers from the mass-metallicity relation of star-forming galaxies measured by Tremonti et al. ((ref???)2004). These galaxies, which have 8.6<12+log(O/H)<9.3 over a range of -14.4>MB>-19.1 and 7.4<log(M*/M☉)<10, are surprisingly nonpathological. They have typical specific star formation rates, are fairly isolated, and, with few exceptions, have no obvious companions. Morphologically, they are similar to dwarf spheroidal or dwarf elliptical galaxies. We predict that their observed high oxygen abundances are due to relatively low gas fractions, concluding that these are transitional dwarf galaxies nearing the end of their star formation activity.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Abundances - Galaxies: Dwarf - Galaxies: Evolution

VizieR on-line data: <Available at CDS (J/ApJ/685/904): table1.dat>

Simbad objects: 45

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Number of rows : 45
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 SDSS J014304.15+143127.7 G 01 43 04.1605783224 +14 31 27.680994696           ~ 4 0
3 IC 225 H2G 02 26 28.254 +01 09 37.49   14.7       ~ 73 0
4 SDSS J023611.69-074402.5 G 02 36 11.6776588560 -07 44 02.466030444           ~ 3 0
5 SDSS J024121.80+000329.3 G 02 41 21.8151541320 +00 03 29.236405032           ~ 8 0
6 IC 255 G 02 47 03.2232509616 +16 17 16.876350924   15.7       ~ 11 0
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
8 LEDA 1779966 EmG 07 48 42.5800806696 +26 32 23.228314440           ~ 19 0
9 LEDA 23686 AG? 08 26 33.794 +25 29 59.43   17.5       ~ 16 0
10 LEDA 1742356 AG? 08 26 39.1829687520 +25 35 53.587974732           ~ 12 0
11 SDSS J083420.17+502708.9 AG? 08 34 20.18130 +50 27 08.9226           ~ 7 0
12 2MASX J08553314+3112417 Q? 08 55 33.1903733064 +31 12 42.129086904   16.17       ~ 34 0
13 2MASX J09173114+3328323 GiC 09 17 31.1060906880 +33 28 31.942380648           ~ 10 0
14 SDSS J093155.12+391617.6 G 09 31 55.1346646920 +39 16 17.581246572           ~ 4 0
15 LEDA 27170 AG? 09 33 52.6791114024 +41 04 46.731432756   17       ~ 14 0
16 SDSS J093644.34+335511.8 G 09 36 44.3458565232 +33 55 11.771232240           ~ 4 0
17 LEDA 1407844 G 10 12 52.2489087168 +12 20 40.263835488           ~ 5 0
18 LEDA 1163947 G 10 50 31.80531 +00 21 38.1197   18.033   16.881   ~ 6 0
19 LEDA 2220522 G 10 52 52.5881196264 +43 25 42.289998564           ~ 24 0
20 SDSS J115108.88+494138.8 G 11 51 08.8887705360 +49 41 38.941494792           ~ 4 0
21 IC 745 AGN 11 54 12.2719925760 +00 08 11.823367524   14.59 14.19     ~ 139 1
22 LEDA 2667196 AG? 11 56 07.071 +64 21 02.61           ~ 10 0
23 LEDA 2492054 AG? 12 01 50.138 +55 08 42.28           ~ 11 0
24 LEDA 1180203 AG? 12 11 07.93884 +00 57 24.6918   17.806   16.826   ~ 19 0
25 LEDA 3548717 G 12 11 25.7573175216 +44 26 09.731762160           ~ 15 0
26 2MASX J12284221+4405532 EmG 12 28 42.2477021928 +44 05 53.258175132           ~ 5 0
27 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
28 SDSS J124050.32+043132.9 AG? 12 40 50.3332084296 +04 31 32.919807144           ~ 10 0
29 SDSS J124221.25+020359.8 AG? 12 42 21.2694338472 +02 03 59.801592888   15.852   14.846   ~ 10 0
30 2MASX J12553735-0119480 Sy1 12 55 37.3595094096 -01 19 47.861358312   15.75   15.17   ~ 13 0
31 SDSS J130233.34-032020.1 G 13 02 33.3519020424 -03 20 20.149567188           ~ 4 0
32 SDSS J132850.11-005430.5 AG? 13 28 50.1161381784 -00 54 30.953745828           ~ 7 0
33 SDSS J134545.64+635114.4 G 13 45 45.6650744712 +63 51 14.496438528           ~ 4 0
34 NGC 5338 AG? 13 53 26.5503668640 +05 12 27.975949560   14.3       ~ 118 0
35 SDSS J135544.18+041437.1 G 13 55 44.1877799160 +04 14 37.307765652           ~ 6 0
36 SDSS J140516.76+541212.5 G 14 05 16.7603084280 +54 12 12.423577248           ~ 4 0
37 MCG+09-23-055 AG? 14 11 54.448 +53 56 22.91   16       ~ 13 0
38 LEDA 2136987 AG? 15 02 16.0753369728 +38 48 22.677873984           ~ 11 0
39 2MASX J15090433+0049185 GiG 15 09 04.292 +00 49 19.17       16.08   ~ 11 0
40 LEDA 3491357 G 15 10 41.0441636448 +41 09 43.939934820           ~ 5 0
41 LEDA 3387342 G 15 42 15.8510297784 +51 43 55.601536296           ~ 5 0
42 ZW III 76 rG 16 21 28.1513857776 +40 12 13.012517736   15.5       ~ 16 0
43 SDSS J171343.22+571118.2 EmG 17 13 43.22815 +57 11 18.2745           ~ 12 0
44 SDSS J233127.23+135431.9 G 23 31 27.2277860376 +13 54 31.933254780           ~ 4 0
45 NAME Local Group GrG ~ ~           ~ 9325 0

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