2020ApJ...896...77H

Query : 2020ApJ...896...77H

2020ApJ...896...77H - Astrophys. J., 896, 77-77 (2020/June-2)

The PHLEK Survey: a new determination of the primordial helium abundance.

HSYU T., COOKE R.J., PROCHASKA J.X. and BOLTE M.

Abstract (from CDS):

We present Keck NIRSPEC and Keck NIRES spectroscopy of sixteen metal-poor galaxies that have pre-existing optical observations. The near-infrared (NIR) spectroscopy specifically targets the He I λ10830 Å emission line, due to its sensitivity to the physical conditions of the gas in H II regions. We use these NIR observations, combined with optical spectroscopy, to determine the helium abundance of sixteen galaxies across a metallicity range 12+log10(O/H) = 7.13-8.00. This data set is combined with two other samples where metallicity and helium abundance measurements can be secured: star-forming galaxies selected from the Sloan Digital Sky Survey spectroscopic database, and existing low-metallicity systems in the literature. We calculate a linear fit to these measurements, accounting for intrinsic scatter, and report a new determination of the primordial helium number abundance, yP=0.0805–0.0017+0.0017, which corresponds to a primordial helium mass fraction YP=0.2436–0.0040+0.0039. Using our determination of the primordial helium abundance in combination with the latest primordial deuterium measurement, (D/H)P×105=2.527±0.030, we place a bound on the baryon density Ωbh2=0.0215–0.0005+0.0005 and the effective number of neutrino species Neff=2.85–0.25+0.28. These values are in 1.3σ agreement with those deduced from the Planck satellite observations of the temperature fluctuations imprinted on the cosmic microwave background.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Dwarf galaxies - Galaxy abundances - Galaxy chemical evolution - big bang nucleosynthesis

VizieR on-line data: <Available at CDS (J/ApJ/896/77): table2.dat table4.dat table5.dat>

Simbad objects: 142

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Number of rows : 142
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 AGC 102729 bCG 00 00 31.45824 +30 52 09.3144           ~ 10 0
2 [VV2003c] J000847.5-085905 Sy1 00 08 47.5610979720 -08 59 05.231058828     18.33     ~ 3 0
3 SDSS J001859.31+234540.3 bCG 00 18 59.31720 +23 45 40.3344           ~ 2 0
4 SDSS J003630.40+005234.7 G 00 36 30.40841 +00 52 34.7849           ~ 7 0
5 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 547 0
6 LEDA 101449 bCG 01 14 37.59 +21 31 17.7           ~ 12 0
7 NGC 450 H2G 01 15 30.4565036568 -00 51 39.125259576   13.4   13.3 13.2 ~ 240 0
8 SDSS J011840.00+351257.0 bCG 01 18 40.00776 +35 12 57.0168           ~ 6 0
9 Z 411-56 H2G 01 25 34.1903008704 +07 59 24.703412028   15.6       ~ 49 0
10 [VV2003c] J020051.6-084542 Sy1 02 00 51.5951547096 -08 45 42.609665556     19.71     ~ 5 0
11 IRAS F02183+0019 AGN 02 20 54.530 +00 33 24.46   16.50       ~ 60 1
12 [VV2003c] J024453.6-082138 Sy1 02 44 53.6678995224 -08 21 37.887825816     19.32     ~ 9 0
13 SDSS J024702.70+011529.4 QSO 02 47 02.6988482136 +01 15 29.363733900           ~ 5 0
14 SDSS J025436.23+000340.1 EmG 02 54 36.23235 +00 03 40.1275   19.64 19.06     ~ 6 0
15 SDSS J030135.56+011420.0 G 03 01 35.5663452432 +01 14 19.750764300           ~ 3 0
16 SBSG 0335-052 AGN 03 37 44.06 -05 02 40.2     16.65     ~ 500 1
17 SHOC 174 Sy1 04 09 37.6297439932 -05 18 05.828941075     19.60     ~ 8 0
18 BD+52 913 WD* 05 05 30.6180977592 +52 49 51.919301604 10.25 11.44 11.69 11.93 12.108 DA.8 1153 0
19 UGCA 116 AGN 05 55 42.645 +03 23 32.23 10.74 11.68 11.46   11.82 ~ 561 0
20 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 588 3
21 SHOC 175 Sy1 07 32 56.7262220558 +37 04 49.855832846     19.33     ~ 7 0
22 SDSS J074249.06+501311.6 G 07 42 49.0632890664 +50 13 11.610744708           ~ 4 0
23 LEDA 1556512 G 07 54 32.98811 +18 19 40.9709           ~ 11 0
24 SDSS J075733.93+475030.7 bCG 07 57 33.93432 +47 50 30.7068           ~ 3 0
25 SDSS J081152.12+473026.2 G 08 11 52.118 +47 30 26.25           ~ 41 0
26 SDSS J081552.00+215623.6 EmG 08 15 52.0005604680 +21 56 23.632482336           ~ 21 0
27 SDSS J082009.11+233919.6 H2G 08 20 09.1298330068 +23 39 19.663236490           ~ 4 0
28 SDSS J083711.33+231158.1 H2G 08 37 11.3303195797 +23 11 58.700284782           ~ 6 0
29 SDSS J085115.65+584055.0 EmG 08 51 15.6551546520 +58 40 54.997114620           ~ 13 0
30 SHOC 226 Sy1 08 52 01.7983033416 +01 04 59.261006568     18.99     ~ 7 0
31 JKB 5 bCG 08 57 39.155 +59 02 56.41           ~ 7 0
32 SDSS J085744.38+590219.9 bCG 08 57 44.38440 +59 02 19.9032           ~ 4 0
33 HS 0900+3651 EmG 09 04 03.59412 +36 39 14.2520   18.40       ~ 7 0
34 SDSS J090813.65+264203.0 G 09 08 13.6243019208 +26 42 03.253973364           ~ 4 0
35 SHOC 244 Sy1 09 10 52.6208313408 +52 27 56.647316520     18.74     ~ 6 0
36 Mrk 1416 H2G 09 20 55.93 +52 34 07.2   17.0       ~ 62 0
37 HS 0924+3821 EmG 09 28 06.23651 +38 07 57.0548   18.5       ~ 15 0
38 LEDA 26955 AG? 09 30 09.04150 +60 28 05.3595           ~ 48 0
39 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
40 Mrk 116B EmG 09 34 02.389 +55 14 23.14           ~ 62 0
41 NAME Leoncino Dwarf Galaxy bCG 09 43 32.356 +33 26 57.65           ~ 58 0
42 LEDA 27886 QSO 09 44 17.101 +54 11 28.83   19.5       ~ 72 0
43 LEDA 2790901 EmG 09 44 22.14051 +48 01 30.2936   18.2       ~ 5 0
44 SDSS J094827.51+142534.0 G 09 48 27.5008734408 +14 25 33.506736312           ~ 4 0
45 SDSS J095538.92+414320.8 EmG 09 55 38.9396595552 +41 43 21.090410076           ~ 4 0
46 SDSS J100720.48+193349.5 EmG 10 07 20.4884907744 +19 33 49.632492600           ~ 6 0
47 SDSS J101059.30+154223.5 EmG 10 10 59.3025222744 +15 42 23.345363880           ~ 3 0
48 SDSS J101242.97+613302.8 H2G 10 12 43.0480361568 +61 33 03.017935584           ~ 11 0
49 NAME Leo P BiC 10 21 45.123 +18 05 16.89           ~ 268 0
50 [ITS2007] 52319-575-521 EmG 10 24 29.249 +05 24 51.00           ~ 30 0
51 Mrk 1434 SBG 10 34 10.155 +58 03 49.13   16.5   16.54   ~ 80 0
52 SDSS J103412.22+014249.1 G 10 34 12.228 +01 42 49.06           ~ 5 0
53 SDSS J103509.32+094516.7 G 10 35 09.3258767640 +09 45 16.891387596           ~ 5 0
54 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 731 0
55 SDSS J104442.66+630602.0 bCG 10 44 42.669 +63 06 02.09           ~ 23 0
56 SDSS J104556.22+183221.1 G 10 45 56.2373727528 +18 32 21.472728252           ~ 3 0
57 SDSS J105123.99+625347.6 G 10 51 23.9389368816 +62 53 47.176147356           ~ 3 0
58 2MASX J10563918+6710490 H2G 10 56 39.2722309104 +67 10 49.094068188   16.76   15.47   ~ 28 0
59 Z 184-40 AG? 10 57 47.0075966640 +36 15 38.824306272   15.5 16     ~ 45 1
60 SDSS J110251.97+433827.0 G 11 02 51.9828001680 +43 38 26.919935844           ~ 3 0
61 SDSS J110432.87+330340.1 G 11 04 32.8822994496 +33 03 40.089984948           ~ 3 0
62 MCG+05-26-046 SBG 11 04 58.298 +29 08 16.54   15.5 15.29     ~ 228 0
63 Z 241-74 H2G 11 05 08.163 +44 44 48.93   14.6       ~ 63 0
64 SDSS J110744.10+443825.9 G 11 07 44.0735348784 +44 38 25.945906056           ~ 3 0
65 SDSS J111539.02+152612.1 H2G 11 15 39.02843 +15 26 12.2000           ~ 4 0
66 SDSS J112313.28+570327.4 G 11 23 13.2955416024 +57 03 27.544585284           ~ 3 0
67 SDSS J112357.28+324143.4 G 11 23 57.28069 +32 41 43.4616           ~ 1 0
68 SDSS J112437.79+083112.3 G 11 24 37.7951696184 +08 31 12.298387080           ~ 3 0
69 [ITS2007] 52295-775-29 EmG 11 28 31.3188502008 +61 12 55.421101908           ~ 6 0
70 Z 12-40 EmG 11 36 36.636 +00 49 02.61   15.3   14.518 15.1 ~ 124 0
71 Mrk 1450 AGN 11 38 35.6552554896 +57 52 26.636623644   15.5       ~ 130 1
72 Z 127-57 EmG 11 48 27.3422096304 +25 46 11.585848764   15.0       ~ 35 0
73 LEDA 37102 Sy1 11 51 33.3537570144 -02 22 21.893502576   17       ~ 179 0
74 SDSS J115431.91+083437.4 G 11 54 31.9122219504 +08 34 37.418671524   18.1   18.3   ~ 5 0
75 Mrk 193 H2G 11 55 28.34 +57 39 52.0   16.5       ~ 63 0
76 SDSS J120459.62+525934.6 bCG 12 04 59.62056 +52 59 34.6488           ~ 3 0
77 SDSS J120730.82+321132.7 G 12 07 30.82649 +32 11 32.7415           ~ 1 0
78 AGC 749452 bCG 12 09 20.02872 +24 26 49.5564           ~ 10 0
79 SDSS J121142.88+603626.7 G 12 11 42.8702307048 +60 36 26.520799536           ~ 3 0
80 SDSS J121433.11+124549.2 bCG 12 14 33.11424 +12 45 49.2048           ~ 3 0
81 SDSS J121715.53+272835.7 EmG 12 17 15.53590 +27 28 35.8039           ~ 2 0
82 LEDA 89694 G 12 21 26.13072 +21 54 09.7380   16       ~ 8 0
83 LEDA 2816013 AG? 12 25 05.438 +61 09 09.72   17.0       ~ 49 0
84 Z 244-18 bCG 12 26 15.69 +48 29 38.3   15.3       ~ 364 0
85 LEDA 2816014 H2G 12 27 20.146 +51 39 24.40   18.0       ~ 6 0
86 SDSS J123444.25+104308.9 G 12 34 44.2422842736 +10 43 08.886830736           ~ 4 0
87 IC 3591 bCG 12 37 02.697 +06 55 33.26   14.6       ~ 137 1
88 BD+25 2534 HS* 12 37 23.5161671712 +25 03 59.867922240 9.117 10.26 10.59 10.642 10.809 sdB1(k) 268 0
89 LEDA 139991 Sy1 12 40 35.01780 -01 17 02.4390   17.3       ~ 7 0
90 LEDA 2790845 bCG 12 48 27.8 +48 23 01           ~ 10 0
91 LEDA 2790846 EmG 12 51 52.4 +49 03 25   18.0       ~ 55 0
92 LEDA 140019 Sy1 12 52 14.3303904384 +00 51 58.573399932           ~ 10 0
93 SDSS J125321.75+502417.8 H2G 12 53 21.7837287912 +50 24 17.823499596           ~ 4 0
94 Mrk 59 rG 12 59 00.288 +34 50 42.45           ~ 319 2
95 JKB 29 bCG 13 01 10.392 +36 54 24.24           ~ 4 0
96 2dFGRS TGN394Z082 Sy1 13 01 48.0304741224 +01 37 18.694447284   18.601 18.84 18.248   ~ 5 0
97 [B68b] 272 AGN 13 03 54.436 +37 14 01.88   17.24 17.25     ~ 26 0
98 LEDA 101489 H2G 13 14 31.00685 +38 32 02.2608           ~ 6 0
99 Z 189-45 H2G 13 14 48.796 +34 52 53.18   14.9       ~ 89 0
100 SDSS J131608.85+395627.3 G 13 16 08.8606584360 +39 56 26.951284860           ~ 3 0
101 LEDA 46470 Sy1 13 19 37.2368590968 +00 50 43.992887892   18       ~ 12 0
102 SDSS J132114.47+460504.7 H2G 13 21 14.4545648400 +46 05 05.152453080           ~ 5 0
103 SDSS J132151.93+470835.9 H2G 13 21 51.946 +47 08 35.89           ~ 5 0
104 SDSS J132221.74+542627.8 bCG 13 22 21.7349077488 +54 26 27.808638036           ~ 2 0
105 HZ 44 HS* 13 23 35.2629445608 +36 07 59.544140304 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 439 0
106 SDSS J133537.60+080149.0 EmG 13 35 37.6059603984 +08 01 49.075411764           ~ 8 0
107 2XMM J134427.6+560130 EmG 13 44 27.3517913112 +56 01 29.784386568           ~ 15 0
108 [ITS2007] 52319-786-443 HII 13 46 46.729 +62 02 22.29           ~ 5 0
109 SDSS J135157.21+101834.4 G 13 51 57.2181187073 +10 18 34.157904685   17.9   18.3   ~ 4 0
110 SDSS J135248.26+111410.4 H2G 13 52 48.2603554296 +11 14 10.832828244           ~ 5 0
111 2QZ J140018.8+010453 Sy1 14 00 18.9345847920 +01 04 53.952726504     19.44     ~ 9 0
112 JKB 2 bCG 14 04 06.044 +31 00 55.82           ~ 4 0
113 SDSS J141020.60+460501.5 G 14 10 20.610 +46 05 01.54           ~ 4 0
114 SDSS J141127.67+120117.0 G 14 11 27.677 +12 01 17.07           ~ 3 0
115 Z 219-66 QSO 14 17 01.716 +43 30 13.52   15.6       ~ 181 0
116 NVSS J143408+150312 rG 14 34 08.5842345048 +15 03 09.210675888           ~ 8 0
117 SDSS J144456.55+130644.5 G 14 44 56.5379266104 +13 06 44.081296740           ~ 4 0
118 SDSS J153041.26+310106.5 EmG 15 30 41.2651644192 +31 01 06.744313812           ~ 5 0
119 SDSS J153549.74+045814.5 G 15 35 49.74720 +04 58 14.5776           ~ 2 0
120 LEDA 4006196 G 15 45 44.5420282944 +44 15 52.019050248           ~ 23 0
121 SDSS J161349.72+140656.3 G 16 13 49.7242208256 +14 06 56.300574528           ~ 3 0
122 SDSS J161405.76+090228.4 G 16 14 05.7713681592 +09 02 28.230548352           ~ 4 0
123 SDSS J161616.88+092116.2 EmG 16 16 16.8874820472 +09 21 16.299938484           ~ 3 0
124 SHOC 536 Sy1 16 24 10.110 -00 22 02.53     16.95     ~ 21 0
125 SDSS J163114.25+442604.7 G 16 31 14.25960 +44 26 04.7364           ~ 26 0
126 SDSS J165539.20+633703.3 bCG 16 55 39.20688 +63 37 03.3456           ~ 3 0
127 SDSS J165712.75+321141.4 H2G 16 57 12.76 +32 11 41.4           ~ 6 0
128 SDSS J170540.13+352747.3 bCG 17 05 40.13688 +35 27 47.3112           ~ 2 0
129 SHOC 561 Sy1 17 06 49.2686271528 +59 46 29.052247728     18.75     ~ 4 0
130 SDSS J175702.36+645417.6 bCG 17 57 02.36304 +64 54 17.6580           ~ 2 0
131 SDSS J203002.86-134352.6 bCG 20 30 02.86944 -13 43 52.6296           ~ 2 0
132 [VV2003c] J211527.1-075951 Sy1 21 15 27.0700061856 -07 59 51.413455284     18.73     ~ 10 0
133 SDSS J212332.71-074831.0 G 21 23 32.6936152824 -07 48 30.742773588           ~ 9 0
134 LEDA 3093156 Sy1 21 32 36.120 -08 29 14.95           ~ 6 0
135 BD+28 4211 HS* 21 51 11.0221915656 +28 51 50.367627468 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 837 0
136 SDSS J221348.45+172235.6 bCG 22 13 48.45696 +17 22 35.6376           ~ 2 0
137 SDSS J222510.13-001152.9 EmG 22 25 10.1372828736 -00 11 52.760500152           ~ 11 0
138 [ITS2007] 52263-742-179 H2G 23 01 23.592 +13 33 14.73           ~ 9 0
139 SDSS J231329.78-010852.6 EmG 23 13 29.78082 -01 08 52.6086           ~ 6 0
140 SDSS J231903.22+010853.5 EmG 23 19 03.2215282296 +01 08 53.459987892           ~ 5 0
141 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 673 1
142 SDSS J233751.93-001000.5 EmG 23 37 51.9569850744 -00 10 00.547826592           ~ 6 0

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