2009ApJ...695..259P

Query : 2009ApJ...695..259P

2009ApJ...695..259P - Astrophys. J., 695, 259-267 (2009/April-2)

Outliers from the mass-metallicity relation. II. A sample of massive metal-poor galaxies from SDSS.

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

Abstract (from CDS):

We present a sample of 42 high-mass low-metallicity outliers from the mass-metallicity relation of star-forming galaxies. These galaxies have stellar masses that span log(M{*}/M☉) ∼ 9.4 to 11.1 and are offset from the mass-metallicity relation by -0.3 to -0.85 dex in 12 + log(O/H). In general, they are extremely blue, have high star-formation rates for their masses, and are morphologically disturbed. Tidal interactions are expected to induce large-scale gas inflow to the galaxies' central regions, and we find that these galaxies' gas-phase oxygen abundances are consistent with large quantities of low-metallicity gas from large galactocentric radii diluting the central metal-rich gas. We conclude with implications for deducing gas-phase metallicities of individual galaxies based solely on their luminosities, specifically in the case of long gamma-ray burst host galaxies.

Abstract Copyright: ∼

Journal keyword(s): galaxies: abundances - galaxies: evolution

VizieR on-line data: <Available at CDS (J/ApJ/695/259): table1.dat>

Nomenclature: Table 1: [PPS2009] DDD.dddd+DD.ddddd N=42.

CDS comments: SDSS J102613.97+4884458.9 is a misprint for SDSS J102613.97+484458.9.

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 [PPS2009] 001.2987+01.06057 Sy1 00 05 11.654 +01 03 38.13     19.98     ~ 4 0
2 [PPS2009] 017.1399+00.46871 G 01 08 33.6 +00 28 07           ~ 1 0
3 [VV2003c] J031515.6-074559 Sy1 03 15 15.6246603024 -07 45 59.020390296     18.32     ~ 3 0
4 [PPS2009] 118.9094+33.44449 G 07 55 38.2626828480 +33 26 40.184034648           ~ 3 0
5 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 576 0
6 [PPS2009] 126.2741+07.21643 G 08 25 05.777 +07 12 59.15           ~ 3 0
7 SDSS J083142.57+512533.6 G 08 31 42.5386091746 +51 25 33.466241061           ~ 1 0
8 SDSS J083549.79+445225.8 G 08 35 49.7555192376 +44 52 25.593381732           ~ 2 0
9 [VV2003c] J083733.5+475752 Sy1 08 37 33.5514069552 +47 57 52.357635936     19.37     ~ 4 0
10 [VV2003c] J092042.5+005034 Sy1 09 20 42.490 +00 50 34.56     19.69     ~ 3 0
11 [PPS2009] 146.2970+42.64472 G 09 45 11.2576688400 +42 38 40.931069928           ~ 2 0
12 [PPS2009] 146.8469+53.06987 G 09 47 23.265 +53 04 11.59           ~ 1 0
13 [PPS2009] 148.0473+54.31252 G 09 52 11.3390899440 +54 18 44.967583980           ~ 1 0
14 GRB 070306 gB 09 52 23.220 +10 28 55.20           ~ 222 1
15 [PPS2009] 149.9796+10.24727 G 09 59 55.1264793192 +10 14 50.128928916           ~ 1 0
16 [PPS2009] 150.2157+08.30726 G 10 00 51.765 +08 18 26.11           ~ 1 0
17 SDSS J101322.10+023457.5 G 10 13 22.10579 +02 34 57.5568           ~ 3 0
18 SDSS J102613.97+484458.9 AGN 10 26 13.9855898832 +48 44 58.980119532           ~ 13 0
19 [PPS2009] 158.5174+06.20286 G 10 34 04.1798682456 +06 12 10.068619140           ~ 4 0
20 [PPS2009] 158.5274+05.51848 G 10 34 06.5873224488 +05 31 06.541579488           ~ 3 0
21 2QZ J111246.0+012016 EmG 11 12 46.073 +01 20 17.44   18.781       ~ 4 0
22 LEDA 2328811 G 11 14 31.781 +48 55 08.49           ~ 6 0
23 2QZ J112136.2+003248 Sy1 11 21 36.2912866872 +00 32 49.330280580   18.3 19.29 18.3   ~ 3 0
24 SDSSCGB 52893.1 G 12 07 54.1077039672 +12 23 26.934087480           ~ 2 0
25 LEDA 1274635 G 12 45 17.892 +04 52 35.31           ~ 5 0
26 [ITS2007] 52320-782-22 H2G 13 04 45.6279190680 +62 24 21.042555192           ~ 8 0
27 [PPS2009] 196.2852+53.19373 G 13 05 08.4417332424 +53 11 37.384481076           ~ 1 0
28 [PPS2009] 197.1532+59.88513 G 13 08 36.8085695184 +59 53 06.631665468           ~ 3 0
29 [PPS2009] 197.4139+62.76859 G 13 09 39.3216655944 +62 46 06.742227432           ~ 1 0
30 SDSS J132143.17+432421.1 G 13 21 43.1822892072 +43 24 21.052910844   18.6   18.8   ~ 4 0
31 [PPS2009] 206.4954+11.47993 G 13 45 58.9127799216 +11 28 47.647593444           ~ 8 0
32 [PPS2009] 214.2315+40.44983 G 14 16 55.552 +40 26 59.37           ~ 4 0
33 LEDA 2238568 G 14 35 11.034 +44 10 59.42   16       ~ 9 0
34 SDSS J143838.94+530843.4 G 14 38 38.94076 +53 08 43.4117           ~ 4 0
35 LEDA 1236817 G 15 04 18.6839969568 +02 45 51.666018120           ~ 8 0
36 SDSS J153402.02-015743.2 G 15 34 02.0202790968 -01 57 43.272539244           ~ 3 0
37 [PPS2009] 234.2552+31.44251 G 15 37 01.235 +31 26 33.03           ~ 3 0
38 [PPS2009] 240.8967+31.83226 G 16 03 35.2191700440 +31 49 56.216344620           ~ 3 0
39 [PPS2009] 244.4054+35.82085 G 16 17 37.306 +35 49 15.01           ~ 1 0
40 SHOC 545 Sy1 16 42 35.5175108784 +42 23 49.673196420     18.78     ~ 6 0
41 [VV2003c] J170201.5+604746 Sy1 17 02 01.438 +60 47 46.24     18.56     ~ 5 0
42 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
43 [PPS2009] 329.9707+01.03852 G 21 59 52.961 +01 02 18.71           ~ 3 0
44 SDSS J230305.26+011458.8 G 23 03 05.26698 +01 14 59.0137           ~ 5 0
45 SDSS J231812.99-004126.1 Sy1 23 18 12.9995426424 -00 41 26.234820168     19.28     ~ 18 0

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