2017ApJ...837...42D

Query : 2017ApJ...837...42D

2017ApJ...837...42D - Astrophys. J., 837, 42-42 (2017/March-1)

Large-scale environmental dependence of the abundance ratio of nitrogen to oxygen in blue, star-forming galaxies fainter than L*.

DOUGLASS K.A. and VOGELEY M.S.

Abstract (from CDS):

We examine how the cosmic environment affects the chemical evolution of galaxies in the universe by comparing the N/O ratio of dwarf galaxies in voids with that of dwarf galaxies in denser regions. Ratios of the forbidden [O III] and [S II] transitions provide estimates of a region's electron temperature and number density. We estimate the abundances of oxygen and nitrogen using these temperature and density estimates and the emission-line fluxes [O II] λ3727, [O III] λλ4959,5007, and [N II] λλ6548,6584 with the direct Te method. Using spectroscopic observations from the Sloan Digital Sky Survey Data Release 7, we are able to estimate the N/O ratio in 42 void dwarf galaxies and 89 dwarf galaxies in denser regions. The N/O ratio for void dwarfs (Mr -17) is slightly lower (∼12 % ) than for dwarf galaxies in denser regions. We also estimate the nitrogen and oxygen abundances of 2050 void galaxies and 3883 galaxies in denser regions with Mr -20. These somewhat brighter galaxies (but still fainter than L*) also display similar minor shifts in the N/O ratio. The shifts in the average and median element abundance values in all absolute magnitude bins studied are in the same direction, suggesting that the large-scale environment may influence the chemical evolution of galaxies. We discuss possible causes of such a large-scale environmental dependence of the chemical evolution of galaxies, including retarded star formation and a higher ratio of dark matter halo mass to stellar mass in void galaxies.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: abundances - galaxies: active - galaxies: dwarf - galaxies: evolution - galaxies: ISM - galaxies: ISM

VizieR on-line data: <Available at CDS (J/ApJ/837/42): table1.dat>

Simbad objects: 135

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Number of rows : 135
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 SDSS J073003.58+432245.1 EmG 07 30 03.592 +43 22 45.16           ~ 15 0
2 SDSS J073735.27+321311.8 G 07 37 35.2729349424 +32 13 11.877639780           ~ 4 0
3 SDSS J073829.12+300438.0 G 07 38 29.12743 +30 04 37.9955           ~ 5 0
4 SDSS J075212.03+462339.9 AG? 07 52 12.0412455000 +46 23 39.998512212           ~ 3 0
5 SDSS J075623.01+220115.1 G 07 56 23.01437 +22 01 15.1497           ~ 4 0
6 SDSS J080041.21+533823.5 G 08 00 41.20802 +53 38 23.6251           ~ 2 0
7 SDSS J080953.52+291705.0 G 08 09 53.521 +29 17 05.05           ~ 6 0
8 SDSS J081750.41+252921.5 G 08 17 50.4237693048 +25 29 21.521125356           ~ 4 0
9 SDSS J082031.61+214328.8 G 08 20 31.611 +21 43 28.82           ~ 3 0
10 SDSS J082332.78+270752.7 G 08 23 32.7932665416 +27 07 52.761909324           ~ 3 0
11 SDSS J083055.39+421324.3 G 08 30 55.39686 +42 13 24.3448           ~ 4 0
12 HS 0828+4346 EmG 08 31 56.3315216496 +43 36 12.682416384   18.4       ~ 4 0
13 LEDA 3996793 G 08 40 45.43786 +32 03 15.7332           ~ 6 0
14 SDSS J084310.71+430853.5 G 08 43 10.71932 +43 08 53.5375           ~ 4 0
15 SDSS J084500.34+271647.0 G 08 45 00.34284 +27 16 47.0531           ~ 4 0
16 SDSS J084936.32+545810.4 H2G 08 49 36.3253950864 +54 58 10.501069440           ~ 5 0
17 SDSS J085522.08+392310.0 G 08 55 22.08697 +39 23 09.9870           ~ 4 0
18 SDSS J085548.98+034041.0 G 08 55 48.981 +03 40 41.03           ~ 2 0
19 SDSS J085844.96+502958.7 G 08 58 44.96417 +50 29 58.6870           ~ 2 0
20 SDSS J090158.05+285816.8 G 09 01 58.05532 +28 58 16.7874           ~ 4 0
21 SDSS J090249.80+371533.1 G 09 02 49.80774 +37 15 33.1528           ~ 3 0
22 SDSS J090447.10+404829.1 G 09 04 47.1081959568 +40 48 29.164523652           ~ 4 0
23 SDSS J090457.96+412936.4 G 09 04 57.96738 +41 29 36.4320           ~ 5 0
24 SDSS J092004.27-003008.9 G 09 20 04.2645604968 -00 30 08.912985048           ~ 10 0
25 SDSS J092145.81+381809.7 G 09 21 45.81234 +38 18 09.7323           ~ 2 0
26 SDSS J092524.23+001240.3 G 09 25 24.238 +00 12 40.39           ~ 9 0
27 SDSS J093139.60+494956.4 G 09 31 39.60617 +49 49 56.4510           ~ 2 0
28 SDSS J093453.53+524420.9 G 09 34 53.53510 +52 44 20.9163           ~ 5 0
29 SDSS J093620.29+415033.7 G 09 36 20.29413 +41 50 33.7681           ~ 3 0
30 SDSS J093909.37+005904.2 G 09 39 09.37901 +00 59 04.1959           ~ 8 0
31 [PVK2003] 145.42427 +46.99157 G 09 41 41.832 +46 59 29.72           ~ 3 0
32 SDSS J094452.28+361728.6 G 09 44 52.28088 +36 17 28.6039           ~ 5 0
33 SDSS J094852.81+143138.9 G 09 48 52.8140650200 +14 31 38.978729472           ~ 4 0
34 SDSS J094941.83+152419.5 G 09 49 41.8423145976 +15 24 19.282653540           ~ 3 0
35 LEDA 2307829 G 09 50 40.634 +47 57 56.97           ~ 5 0
36 [PVK2003] 147.83838 +57.93145 G 09 51 21.2171023536 +57 55 53.347914624           ~ 3 0
37 SDSS J095125.06+015513.6 G 09 51 25.06775 +01 55 13.6445           ~ 3 0
38 SDSS J095604.31+464140.5 G 09 56 04.31557 +46 41 40.6033           ~ 2 0
39 SDSS J100036.24+542012.3 G 10 00 36.24206 +54 20 12.3003           ~ 2 0
40 SDSS J100241.40+325940.1 G 10 02 41.405 +32 59 40.10           ~ 3 0
41 SDSS J101028.77+162813.0 G 10 10 28.7743742688 +16 28 13.046006676           ~ 2 0
42 SDSS J101116.62+160020.1 G 10 11 16.61638 +16 00 20.0470           ~ 5 0
43 SDSS J101328.15+545544.3 G 10 13 28.158 +54 55 44.30           ~ 2 0
44 LEDA 3464105 G 10 15 02.61006 +07 48 26.0412           ~ 7 0
45 SDSS J101711.84+575521.4 G 10 17 11.8384865592 +57 55 21.445650372           ~ 4 0
46 SDSS J102346.09+370638.0 G 10 23 46.096 +37 06 38.04           ~ 2 0
47 LEDA 1988032 AG? 10 30 47.707 +32 15 02.11           ~ 9 0
48 LEDA 3466828 G 10 33 01.1392483224 +54 02 18.022709616           ~ 4 0
49 LEDA 4251096 G 10 46 12.17846 +21 31 37.4135           ~ 6 0
50 SDSS J105142.83+071740.8 G 10 51 42.82970 +07 17 40.8849           ~ 7 0
51 SDSS J105515.96+372542.6 G 10 55 15.969 +37 25 42.62           ~ 2 0
52 SDSS J105921.21+193736.2 G 10 59 21.2158805592 +19 37 36.206385636           ~ 6 0
53 SDSS J110241.51+440345.8 G 11 02 41.5201384560 +44 03 45.813863556           ~ 7 0
54 LEDA 2274663 G 11 05 39.410 +46 03 28.38           ~ 6 0
55 SDSS J110546.58+043427.4 G 11 05 46.58231 +04 34 27.4521           ~ 3 0
56 LEDA 2790911 EmG 11 05 51.1666825320 +42 58 09.132181644   17.5       ~ 8 0
57 SDSS J110619.25+153227.9 G 11 06 19.2639147456 +15 32 27.856537152           ~ 7 0
58 LEDA 4015679 AG? 11 06 41.008 +45 19 09.31           ~ 4 0
59 HS 1107+3712 EmG 11 10 02.6215315392 +36 56 04.700730516   17.6       ~ 3 0
60 SDSS J111123.73+454131.6 G 11 11 23.7306552408 +45 41 31.773765516           ~ 3 0
61 SDSS J111612.04+182625.4 G 11 16 12.04932 +18 26 25.5071           ~ 5 0
62 SDSS J111733.06+454020.7 G 11 17 33.0687495096 +45 40 20.832800412           ~ 6 0
63 LEDA 1584525 G 11 19 10.25207 +19 13 04.0751           ~ 6 0
64 SDSS J111959.99+343800.2 H2G 11 19 59.99823 +34 38 00.2312           ~ 3 0
65 LEDA 3474196 G 11 42 03.04520 +49 21 24.7049           ~ 4 0
66 SDSS J114513.15-014817.6 G 11 45 13.158 -01 48 17.62   18.270   17.665   ~ 6 0
67 SDSS J114858.97+210510.7 G 11 48 58.97876 +21 05 10.7672           ~ 5 0
68 SDSS J115149.13+313014.5 H2G 11 51 49.1269974024 +31 30 14.631769332           ~ 6 0
69 LEDA 1723753 G 11 52 32.75641 +25 02 35.5445           ~ 3 0
70 SDSS J115523.95+115551.1 G 11 55 23.96356 +11 55 51.2010           ~ 2 0
71 LEDA 2273282 G 11 57 26.811 +45 58 10.61           ~ 5 0
72 SDSS J115908.00+444511.7 G 11 59 08.00079 +44 45 11.7413           ~ 5 0
73 SDSS J120447.18+471404.8 G 12 04 47.18792 +47 14 04.8151           ~ 5 0
74 HS 1202+3732 EmG 12 05 09.6665756904 +37 16 13.447661268   18.7       ~ 5 0
75 SDSS J121107.57+420415.4 G 12 11 07.57917 +42 04 15.4231           ~ 4 0
76 LBQS 1214+1432 EmG 12 16 39.45665 +14 15 37.0525   17.7       ~ 9 0
77 LEDA 2217820 G 12 17 14.02021 +43 18 53.3347           ~ 6 0
78 HS 1216+4148 H2G 12 19 19.39729 +41 32 17.9046   17.83       ~ 5 0
79 SDSS J122215.32+281853.1 G 12 22 15.32449 +28 18 53.0700           ~ 7 0
80 SDSS J123200.64+043902.1 G 12 32 00.6408500160 +04 39 02.193212700           ~ 4 0
81 LEDA 4002576 G 12 33 13.64474 +11 10 28.4297           ~ 6 0
82 SDSS J124219.03+140629.1 G 12 42 19.03657 +14 06 29.1313           ~ 2 0
83 LEDA 2223005 EmG 12 47 38.6022741984 +43 31 55.966008648           ~ 5 0
84 SDSS J125923.52+152137.7 G 12 59 23.52938 +15 21 37.7612           ~ 5 0
85 SDSS J130249.17+653449.6 H2G 13 02 49.1702998488 +65 34 49.049954940           ~ 7 0
86 LEDA 101481 GiC 13 03 41.9000539368 +33 09 33.860161512           ~ 5 0
87 SDSS J130821.42+113055.0 G 13 08 21.42845 +11 30 55.0267           ~ 11 0
88 SDSS J131219.04+340201.1 G 13 12 19.0545025104 +34 02 01.087301148           ~ 3 0
89 SDSS J131225.05+582540.5 G 13 12 25.0513269168 +58 25 40.604700900           ~ 4 0
90 SDSS J131235.15+125743.3 H2G 13 12 35.1939765372 +12 57 43.601703768           ~ 7 0
91 LEDA 1161018 G 13 13 24.26327 +00 15 02.9443   18.59       ~ 7 0
92 SDSS J131817.81+021259.8 G 13 18 17.81583 +02 12 59.8408   18.201   17.473   ~ 6 0
93 SDSS J132739.84+505409.4 G 13 27 39.84871 +50 54 09.4232           ~ 4 0
94 LEDA 3555970 G 13 29 02.431 +10 54 55.83           ~ 4 0
95 SDSS J132918.77+123936.8 G 13 29 18.76980 +12 39 36.8431           ~ 3 0
96 KISS F1330-5795 SBG 13 29 56.5557057960 +29 46 19.334265060   17.99 17.73     ~ 9 0
97 SDSS J133048.44+121628.1 G 13 30 48.44773 +12 16 28.1016           ~ 2 0
98 SDSS J133516.22+282859.7 G 13 35 16.22956 +28 28 59.7358   18.276       ~ 4 0
99 SDSS J134031.20+145152.2 G 13 40 31.20024 +14 51 52.2324           ~ 4 0
100 LEDA 3994907 G 13 44 37.63139 -01 15 52.5981           ~ 3 0
101 LEDA 1660476 G 13 45 45.25299 +21 56 50.7210           ~ 5 0
102 SDSS J134702.05+323259.5 G 13 47 02.05734 +32 32 59.5226           ~ 3 0
103 LEDA 3483513 G 13 48 36.876 +48 52 58.22           ~ 5 0
104 SDSS J135401.01+203034.8 G 13 54 01.0091073696 +20 30 34.748451540           ~ 4 0
105 SDSS J135631.57+325045.5 G 13 56 31.57203 +32 50 45.5299           ~ 2 0
106 SDSS J135659.76+095549.9 G 13 56 59.76303 +09 55 49.9915           ~ 5 0
107 SDSS J135758.56+511926.3 G 13 57 58.562 +51 19 26.34           ~ 2 0
108 SDSS J140244.46+502447.3 G 14 02 44.46485 +50 24 47.3804           ~ 2 0
109 SDSS J140704.18+063616.3 G 14 07 04.1899055184 +06 36 16.406369280           ~ 8 0
110 SDSS J140942.85+642936.0 G 14 09 42.85565 +64 29 36.0448           ~ 4 0
111 LEDA 1207511 G 14 14 12.88750 +01 50 12.8808           ~ 12 0
112 LEDA 3559692 G 14 15 05.58415 +36 22 57.7251           ~ 6 0
113 SDSS J141619.47+071529.5 G 14 16 19.46959 +07 15 29.5198           ~ 6 0
114 SDSS J141812.16+135933.9 G 14 18 12.16436 +13 59 34.0173           ~ 5 0
115 LEDA 4004559 H2G 14 19 14.100 +39 57 29.89   17.60       ~ 4 0
116 SDSS J142011.81+384813.4 G 14 20 11.816 +38 48 13.50           ~ 4 0
117 SDSS J142537.89+412804.8 G 14 25 37.8972995040 +41 28 04.831715640           ~ 4 0
118 LEDA 2793641 EmG 14 29 32.6922369288 +33 30 40.604168592   18.07 17.55 17.35 17.06 ~ 15 0
119 SDSS J143101.37+380421.5 G 14 31 01.374 +38 04 21.54           ~ 4 0
120 LEDA 2816102 G 14 32 02.8407537192 +51 52 52.136877396   18.0       ~ 14 0
121 LEDA 2790861 bCG 14 36 39.59245 +50 14 24.0701   18.0       ~ 6 0
122 SDSS J144611.91+380452.8 G 14 46 11.90991 +38 04 52.8170           ~ 5 0
123 SDSS J145735.68+413816.0 G 14 57 35.69150 +41 38 16.1311           ~ 2 0
124 SDSSCGB 31874.1 G 15 04 01.939 +08 33 09.74           ~ 3 0
125 SDSS J150831.64+525556.6 G 15 08 31.6507867560 +52 55 56.658063396           ~ 4 0
126 SDSS J151100.82+112024.2 G 15 11 00.8392494744 +11 20 24.545887224           ~ 2 0
127 LEDA 2793647 G 15 13 58.3843139568 +33 08 22.041956328           ~ 7 0
128 SDSS J152202.71+603255.6 G 15 22 02.71305 +60 32 55.6703           ~ 4 0
129 SDSS J153721.38+415353.9 G 15 37 21.3811839240 +41 53 53.923444872           ~ 3 0
130 SDSS J155423.82+213456.4 G 15 54 23.8152886272 +21 34 56.444882340           ~ 4 0
131 SDSS J155834.00+164433.1 G 15 58 34.00910 +16 44 33.1247           ~ 2 0
132 SDSS J161547.10+280342.9 G 16 15 47.1041016072 +28 03 42.913737684           ~ 6 0
133 KISS F1615-4535 SBG 16 16 38.894 +29 03 32.46   17.79 17.38     ~ 17 0
134 SDSS J162001.12+371301.2 G 16 20 01.1425708968 +37 13 01.074557136           ~ 3 0
135 LEDA 3498236 G 16 20 56.986 +37 58 44.32           ~ 6 0

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