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Query : 2010MNRAS.406.1238E |
2010MNRAS.406.1238E - Mon. Not. R. Astron. Soc., 406, 1238-1247 (2010/August-1)
When are extremely metal-deficient galaxies extremely metal deficient ?
EKTA B. and CHENGALUR J.N.
Abstract (from CDS):
We also determine the gas mass fractions and chemical yields of galaxies in all three samples. We find that the effective chemical yield increases with increasing baryonic mass, consistent with what is expected if outflows of metal-enriched gas are important in determining the effective yield. XMD galaxies have lower effective yield than BCG/dI galaxies of similar baryonic mass. This suggests that some process, peculiar to XMD galaxies, has resulted in their low measured metallicities. Motivated by the fact that interactions are common in XMD galaxies, we suggest that improved (tidally driven) mixing of the interstellar media (ISM) in XMD galaxies leads to a lowering of both, the measured metallicity and the calculated effective yield. In isolated dwarf galaxies, the outer parts of the stellar envelope probably do not participate in the star formation, but are still generally included in the calculation of effective yield. This results in an overestimate of the effective yield. We suggest that XMD galaxies are deviant from the L-Z relation because of a combination of being gas rich (i.e. having processed less gas into stars) and having more uniform mixing of metals in their ISM.
Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS
Journal keyword(s): galaxies: abundances - galaxies: dwarf - galaxies: evolution
Simbad objects: 122
Number of rows : 122 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | UGC 12894 | G | 00 00 22.55 | +39 29 43.5 | 17 | ~ | 36 | 0 | ||||
2 | NAME Wolf-Lundmark-Melotte | G | 00 01 57.9 | -15 27 50 | 11.50 | 11.10 | 10.93 | ~ | 690 | 2 | ||
3 | LEDA 101427 | H2G | 00 24 25.9458009336 | +14 04 10.732070028 | ~ | 20 | 0 | |||||
4 | UGC 300 | AG? | 00 30 04.10 | +03 30 47.0 | 18 | ~ | 35 | 0 | ||||
5 | ESO 473-24 | AG? | 00 31 22.51 | -22 45 57.5 | 16.11 | 15.87 | 17.7 | ~ | 58 | 1 | ||
6 | 2MASX J00531961-1024115 | Sy1 | 00 53 19.6305260904 | -10 24 11.957550084 | 17.14 | ~ | 11 | 0 | ||||
7 | IC 1613 | GiC | 01 04 48.4071 | +02 07 10.185 | 10.42 | 10.01 | 9.77 | ~ | 1235 | 2 | ||
8 | UGC 685 | AG? | 01 07 23.0321 | +16 41 00.988 | 15.01 | 14.55 | 14.07 | ~ | 137 | 0 | ||
9 | UGC 772 | LSB | 01 13 40.450 | +00 52 39.16 | 17 | ~ | 63 | 0 | ||||
10 | SDSS J011914.28-093546.4 | EmG | 01 19 14.283 | -09 35 46.23 | ~ | 18 | 0 | |||||
11 | UGC 993 | H2G | 01 25 34.1903008704 | +07 59 24.703412028 | 15.6 | ~ | 44 | 0 | ||||
12 | 6dFGS gJ012646.5-003845 | H2G | 01 26 46.6028219232 | -00 38 46.165233696 | 17 | 15.46 | ~ | 56 | 0 | |||
13 | UGC 1104 | AG? | 01 32 42.5190557016 | +18 19 01.514434548 | 15.03 | 14.56 | 14.13 | 13.89 | ~ | 95 | 0 | |
14 | SDSS J013352.55+134209.5 | EmG | 01 33 52.555 | +13 42 09.53 | ~ | 20 | 0 | |||||
15 | UGCA 20 | bCG | 01 43 14.6 | +19 58 51 | 16 | ~ | 55 | 0 | ||||
16 | Z 412-24 | H2G | 01 44 41.3 | +04 53 26 | 15.07 | 15.50 | 15.16 | 14.86 | 14.58 | ~ | 99 | 0 |
17 | ESO 245-5 | AG? | 01 45 03.74 | -43 35 52.9 | 13.45 | 12.92 | 12.63 | 12.51 | 12.8 | ~ | 140 | 1 |
18 | LEDA 7896 | AG? | 02 04 25.598 | -10 09 35.01 | 17 | ~ | 18 | 0 | ||||
19 | MCG-02-06-026 | AG? | 02 05 49.081 | -09 49 17.62 | 15.14 | 16.77 | 15.2 | ~ | 35 | 0 | ||
20 | SHOC 113 | EmG | 02 18 52.9115851920 | -09 12 18.816216012 | ~ | 10 | 0 | |||||
21 | LEDA 994632 | AG? | 02 31 45.9791358288 | -09 08 47.712166440 | ~ | 10 | 0 | |||||
22 | UGC 2023 | GiG | 02 33 18.20 | +33 29 28.0 | 14.9 | 13.59 | ~ | 89 | 0 | |||
23 | SHOC 137 | H2G | 02 48 15.9460059552 | -08 17 16.258401096 | ~ | 14 | 0 | |||||
24 | SDSS J025346.36-072343.6 | G | 02 53 46.365 | -07 23 43.61 | ~ | 2 | 0 | |||||
25 | PB 6923 | Sy1 | 02 54 26.1142885944 | -00 41 22.160643936 | 17.56 | 17.57 | ~ | 20 | 0 | |||
26 | SDSS J030149.01-005257.4 | EmG | 03 01 49.026 | -00 52 57.39 | ~ | 11 | 0 | |||||
27 | [PBT2001] SBSG 0335-052 W | G | 03 37 38.40 | -05 02 37.5 | 19.14 | 18.85 | ~ | 107 | 1 | |||
28 | SBSG 0335-052B | G | 03 37 44.04 | -05 02 40.2 | 16.77 | 16.65 | 16.79 | ~ | 185 | 1 | ||
29 | UGC 3174 | GiC | 04 48 34.50 | +00 14 30.0 | 14.7 | 13.9 | 14.4 | ~ | 66 | 0 | ||
30 | UGC 3647 | AG? | 07 04 50.94 | +56 31 13.8 | 16.0 | ~ | 37 | 0 | ||||
31 | UGC 3672 | AG? | 07 06 27.336 | +30 19 23.61 | 17 | ~ | 40 | 0 | ||||
32 | UGC 3974 | G | 07 41 56.3059298112 | +16 48 07.451632188 | 15.4 | ~ | 225 | 0 | ||||
33 | UGC 4117 | AG? | 07 57 25.948 | +35 56 22.05 | 15.5 | ~ | 32 | 0 | ||||
34 | UGC 4305 | IG | 08 19 04.9864630512 | +70 43 13.086910452 | 12.06 | 11.72 | 11.39 | 11.11 | ~ | 768 | 2 | |
35 | LEDA 2790884 | bCG | 08 25 55.5166210656 | +35 32 31.833368556 | 18.2 | ~ | 120 | 1 | ||||
36 | SDSS J082718.07+460203.0 | G | 08 27 18.069 | +46 02 02.98 | ~ | 2 | 0 | |||||
37 | UGC 4483 | GiG | 08 37 03.00 | +69 46 31.0 | 15.70 | 15.46 | 14.98 | 14.89 | ~ | 302 | 0 | |
38 | Mrk 627 | EmG | 08 46 34.446 | +36 26 21.48 | 15.6 | ~ | 26 | 0 | ||||
39 | LEDA 2790886 | EmG | 08 49 40.3214491272 | +35 11 38.002195500 | 19.0 | ~ | 10 | 0 | ||||
40 | LEDA 1177519 | H2G | 08 59 20.8443158808 | +00 51 42.235412688 | ~ | 16 | 0 | |||||
41 | SDSS J091028.77+071117.9 | H2G | 09 10 28.7687526264 | +07 11 18.149714808 | ~ | 8 | 0 | |||||
42 | SDSS J091159.43+313535.9 | AG? | 09 11 59.434 | +31 35 35.92 | ~ | 14 | 0 | |||||
43 | Mrk 104 | Sy1 | 09 16 45.5160392472 | +53 26 34.300942764 | 14.7 | ~ | 44 | 0 | ||||
44 | MCG+09-15-115 | G | 09 17 46.325 | +53 17 33.09 | 16 | ~ | 8 | 0 | ||||
45 | Mrk 1416 | AG? | 09 20 55.93 | +52 34 07.2 | 17.0 | ~ | 59 | 0 | ||||
46 | LB 555 | EmG | 09 30 06.4773062016 | +60 26 53.169485316 | 17.0 | ~ | 36 | 0 | ||||
47 | Mrk 116 | PaG | 09 34 02.1 | +55 14 25 | ~ | 1104 | 1 | |||||
48 | LEDA 27591 | SBG | 09 40 12.843 | +29 35 30.30 | 16.32 | 16.08 | ~ | 57 | 0 | |||
49 | LEDA 27886 | QSO | 09 44 17.101 | +54 11 28.83 | 19.5 | ~ | 71 | 0 | ||||
50 | Mrk 22 | Sy1 | 09 49 30.3096198376 | +55 34 46.971972356 | 15.7 | ~ | 71 | 0 | ||||
51 | SDSS J095241.42+020758.1 | H2G | 09 52 41.426 | +02 07 58.14 | ~ | 7 | 0 | |||||
52 | UGC 5340 | AG? | 09 56 46.047 | +28 49 43.77 | 14.82 | 14.74 | 14.59 | 14.55 | ~ | 227 | 1 | |
53 | NAME Sextans B | H2G | 10 00 00.8217342072 | +05 20 09.533389560 | 12.77 | 12.25 | 11.89 | 11.71 | ~ | 528 | 0 | |
54 | NAME M81 dwB | LSB | 10 05 30.45024 | +70 21 51.4253 | 15.95 | 15.56 | 15.09 | 14.87 | ~ | 203 | 1 | |
55 | LEDA 29998 | EmG | 10 16 24.516 | +37 54 45.96 | 16.5 | ~ | 52 | 0 | ||||
56 | Mrk 140 | AG? | 10 16 28.2135145968 | +45 19 17.164289028 | 15.0 | ~ | 48 | 0 | ||||
57 | SDSS J103137.27+043422.0 | GiP | 10 31 37.2791738640 | +04 34 22.224457776 | ~ | 7 | 0 | |||||
58 | Mrk 1434 | SBG | 10 34 10.155 | +58 03 49.13 | 16.5 | 16.54 | ~ | 73 | 0 | |||
59 | LEDA 2302764 | EmG | 10 36 25.010 | +47 41 53.69 | 18.5 | ~ | 16 | 0 | ||||
60 | LEDA 2336386 | G | 10 40 42.852 | +49 12 23.21 | 17.0 | ~ | 13 | 0 | ||||
61 | SDSS J104400.05+035305.3 | * | 10 44 00.057 | +03 53 05.32 | ~ | 1 | 0 | |||||
62 | SDSS J104456.00+004433.5 | H2G | 10 44 56.0207339952 | +00 44 33.544947264 | ~ | 3 | 0 | |||||
63 | Z 10-41 | AG? | 10 52 48.6343718040 | +00 02 04.035314544 | 16.0 | 15.6 | 15.5 | ~ | 23 | 0 | ||
64 | LEDA 2678872 | Sy1 | 10 57 41.9696561712 | +65 35 39.903886320 | ~ | 10 | 0 | |||||
65 | LEDA 2147507 | EmG | 11 02 09.80160 | +39 18 45.3960 | 18.20 | 17.7 | ~ | 11 | 0 | |||
66 | MCG+10-16-059 | AG? | 11 05 53.6921585616 | +60 22 28.499349252 | 16 | ~ | 24 | 0 | ||||
67 | BFW78 9 | EmG | 11 10 57.9 | +09 36 34 | ~ | 7 | 0 | |||||
68 | NAME Arp's Galaxy | AG? | 11 19 34.344 | +51 30 12.17 | 17.3 | ~ | 71 | 0 | ||||
69 | NAME NGC 3640 companion | G | 11 21 51.34 | +03 24 17.4 | ~ | 13 | 0 | |||||
70 | SDSS J112526.75+654607.2 | H2G | 11 25 26.750 | +65 46 07.17 | ~ | 5 | 0 | |||||
71 | Mrk 1446 | H2G | 11 27 32.6498672448 | +53 54 54.508878252 | 16.5 | ~ | 29 | 0 | ||||
72 | [VV2003c] J112743.0+641001 | Sy1 | 11 27 42.9585182424 | +64 10 01.431611796 | 18.12 | ~ | 5 | 0 | ||||
73 | MCG+10-17-011 | AG? | 11 32 02.6164558680 | +57 22 36.292387908 | 17 | ~ | 59 | 1 | ||||
74 | [VV2003c] J113341.2+634926 | Sy1 | 11 33 41.2728875376 | +63 49 26.069908260 | 18.33 | ~ | 6 | 0 | ||||
75 | 2MASX J11481815-0138230 | Sy1 | 11 48 18.153 | -01 38 23.05 | 15.6 | 15.847 | ~ | 31 | 0 | |||
76 | LEDA 37102 | Sy1 | 11 51 33.3537570144 | -02 22 21.893502576 | 17 | ~ | 167 | 0 | ||||
77 | Mrk 1307 | Sy1 | 11 52 37.19 | -02 28 09.9 | 14.79 | 14.09 | 14.9 | ~ | 171 | 0 | ||
78 | 2dFGRS TGN311Z206 | Sy1 | 11 52 47.5102092912 | -00 40 07.665791232 | 18 | 17.188 | ~ | 45 | 0 | |||
79 | LEDA 2815986 | AG? | 12 02 02.4750603336 | +54 15 51.049196784 | 18.0 | ~ | 76 | 0 | ||||
80 | LEDA 2501589 | AG? | 12 08 28.1896864416 | +55 25 25.797650880 | 17.0 | ~ | 31 | 0 | ||||
81 | Mrk 1313 | Sy1 | 12 12 14.7430689744 | +00 04 20.530354908 | 17.56 | 17.40 | ~ | 77 | 0 | |||
82 | LEDA 39055 | EmG | 12 14 02.4588226248 | +53 45 17.525587212 | 18 | ~ | 83 | 0 | ||||
83 | MCG+01-31-030 | GiP | 12 15 18.322 | +05 45 40.28 | 14.9 | ~ | 92 | 0 | ||||
84 | NGC 4228 | SBG | 12 15 39.174 | +36 19 36.80 | 10.63 | 10.30 | 9.93 | 9.74 | ~ | 965 | 1 | |
85 | LEDA 2816013 | AG? | 12 25 05.438 | +61 09 09.72 | 17.0 | ~ | 47 | 0 | ||||
86 | ESO 380-27 | H2G | 12 25 46.95 | -36 14 00.7 | 17.47 | 16.52 | ~ | 100 | 1 | |||
87 | NAME Virgo Cluster | ClG | 12 26 32.1 | +12 43 24 | ~ | 6637 | 0 | |||||
88 | LEDA 42204 | EmG | 12 38 06.8792917776 | +10 09 56.059792560 | 16.79 | ~ | 42 | 0 | ||||
89 | NAME CVn I dwA | GiC | 12 38 40.06 | +32 46 00.5 | 16.91 | 16.66 | 16.73 | 16.62 | ~ | 232 | 0 | |
90 | 2dFGRS TGN127Z083 | EmG | 12 41 59.3495588664 | -03 40 02.598496572 | 18.722 | 18.044 | ~ | 13 | 0 | |||
91 | UGC 8024 | GiC | 12 54 05.248 | +27 08 58.67 | 14.37 | 14.23 | 13.95 | 13.84 | ~ | 592 | 1 | |
92 | UGC 8091 | H2G | 12 58 40.1930636208 | +14 13 00.739589628 | 15.24 | 15.16 | 14.98 | 14.81 | ~ | 463 | 0 | |
93 | 2dFGRS TGN327Z109 | LSB | 13 02 40.79 | +01 04 26.8 | 18 | 16.818 | ~ | 35 | 0 | |||
94 | KISS F1312-2143 | EmG | 13 13 16.4 | +44 02 30 | ~ | 11 | 0 | |||||
95 | UGCA 357 | AG? | 13 26 13.800 | +37 46 14.67 | 17 | ~ | 26 | 0 | ||||
96 | UGC 8651 | AG? | 13 39 53.75 | +40 44 25.3 | 15.37 | 14.56 | 14.20 | 14.10 | ~ | 155 | 0 | |
97 | Mrk 1480 | H2G | 13 42 51.8581668336 | +52 42 30.386681784 | 16.5 | ~ | 29 | 0 | ||||
98 | SDSS J135030.82+622649.0 | H2G | 13 50 30.7888519248 | +62 26 49.129518084 | ~ | 4 | 0 | |||||
99 | 2dFGRS TGN338Z246 | Sy1 | 13 52 36.861 | +00 01 20.98 | 18 | ~ | 20 | 0 | ||||
100 | UGC 9128 | AG? | 14 15 57.0834 | +23 03 29.871 | 15.40 | 14.77 | 14.41 | 14.32 | ~ | 283 | 0 | |
101 | MCG+07-29-060 | QSO | 14 17 01.716 | +43 30 13.52 | 15.6 | ~ | 172 | 0 | ||||
102 | UGC 9240 | AG? | 14 24 43.21 | +44 31 41.8 | 14.24 | 13.54 | 13.17 | 13.07 | ~ | 200 | 0 | |
103 | LEDA 99823 | AG? | 14 25 24.61 | +51 33 16.6 | 17.0 | ~ | 21 | 0 | ||||
104 | Z 247-36 | AG? | 14 30 12.2086044216 | +45 32 32.369487468 | 15.2 | ~ | 29 | 0 | ||||
105 | ECO 7278 | H2G | 14 30 53.5113099312 | +00 27 46.303249140 | ~ | 15 | 0 | |||||
106 | UGC 9497 | H2G | 14 44 12.8032800372 | +42 37 43.773570223 | 16.0 | ~ | 82 | 0 | ||||
107 | LEDA 2414734 | AG? | 14 54 42.9226962624 | +52 25 44.965384068 | 17.0 | ~ | 20 | 0 | ||||
108 | SDSS J153704.18+551550.5 | H2G | 15 37 04.1703489192 | +55 15 50.657550372 | ~ | 6 | 0 | |||||
109 | UGC 9992 | AG? | 15 41 47.85 | +67 15 15.3 | 15.71 | 15.22 | 14.81 | 14.44 | ~ | 88 | 0 | |
110 | LEDA 101538 | H2G | 16 16 23.5420809528 | +47 02 02.261620176 | 16.9 | ~ | 20 | 1 | ||||
111 | SDSS J165730.04+384123.2 | EmG | 16 57 30.034 | +38 41 23.23 | 17.1 | ~ | 7 | 0 | ||||
112 | LEDA 2790946 | EmG | 17 05 45.3265183560 | +43 28 49.507838940 | 18.1 | ~ | 13 | 0 | ||||
113 | SDSS J171236.63+321633.4 | EmG | 17 12 36.6269544336 | +32 16 33.232622988 | ~ | 12 | 0 | |||||
114 | Mrk 894 | G | 17 18 28.1 | +30 10 43 | 16.5 | ~ | 9 | 0 | ||||
115 | NGC 6822 | G | 19 44 56.199 | -14 47 51.29 | 18 | 8.1 | ~ | 1562 | 0 | |||
116 | SDSS J210455.31-003522.3 | G | 21 04 55.310 | -00 35 22.38 | ~ | 31 | 0 | |||||
117 | [GPM2009] J2119-0732 | G | 21 19 42.381 | -07 32 24.39 | ~ | 4 | 0 | |||||
118 | SDSS J213658.81+041404.0 | bCG | 21 36 58.82310 | +04 14 04.0999 | ~ | 12 | 0 | |||||
119 | NAME Kinman Dwarf | bCG | 22 30 36.7959714600 | -00 06 36.924915456 | 16.85 | 17.35 | 16.87 | 16.65 | ~ | 65 | 2 | |
120 | LEDA 71137 | G | 23 20 35.1835589520 | -00 52 51.225894516 | 18 | ~ | 14 | 0 | ||||
121 | NAME PegDIG | G | 23 28 35.2 | +14 44 35 | 13.85 | 13.16 | 12.52 | ~ | 474 | 1 | ||
122 | UGC 12713 | AG? | 23 38 14.758 | +30 42 33.24 | 15.1 | ~ | 56 | 0 |
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