Hunting for extremely metal-poor emission-line galaxies in the Sloan Digital Sky Survey: MMT and 3.5 m APO observations

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Volume 546 (October 2012)

A&A, 546 (2012) A122

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Table 7

Ionic and total heavy element abundances derived from the low-resolution MMT spectra.

	Galaxy

Property	J1016+3754^a	J1016+5823No.1^a	J1016+5823No.2^a	J1016+5823No.3^a	J1044+0353^a

T_e(O iii) (K)	17167 ± 214	15410 ± 205	15170 ± 1093	16960 ± 265	19881 ± 256
T_e(O ii) (K)	15443 ± 174	14526 ± 177	14377 ± 947	15351 ± 217	16265 ± 186
T_e(S iii) (K)	15949 ± 178	14968 ± 170	14774 ± 907	15776 ± 220	18201 ± 212

O⁺/H⁺ (× 10⁴)	0.052 ± 0.002	0.115 ± 0.004	0.139 ± 0.026	0.088 ± 0.004	0.024 ± 0.001
O⁺⁺/H⁺ (× 10⁴)	0.373 ± 0.012	0.422 ± 0.015	0.253 ± 0.047	0.327 ± 0.013	0.247 ± 0.008
O⁺⁺⁺/H⁺ (× 10⁶)	1.490 ± 0.125	0.741 ± 0.111	...	0.362 ± 0.079	0.587 ± 0.040
O/H (× 10⁴)	0.441 ± 0.012	0.545 ± 0.016	0.393 ± 0.054	0.418 ± 0.014	0.277 ± 0.008
12 + log(O/H)	7.644 ± 0.012	7.736 ± 0.013	7.594 ± 0.059	7.622 ± 0.014	7.442 ± 0.012

N⁺/H⁺ (× 10⁶)	0.157 ± 0.008	0.230 ± 0.010	0.514 ± 0.067	0.172 ± 0.011	0.063 ± 0.004
ICF	7.976	4.649	2.840	4.670	10.950
log(N/O)	−1.545 ± 0.026	−1.707 ± 0.024	−1.430 ± 0.082	−1.717 ± 0.031	−1.605 ± 0.032

Ne⁺⁺/H⁺ (× 10⁵)	0.725 ± 0.025	0.865 ± 0.034	0.456 ± 0.097	0.660 ± 0.029	0.471 ± 0.015
ICF	1.049	1.074	1.132	1.072	1.035
log(Ne/O)	−0.763 ± 0.021	−0.768 ± 0.024	−0.882 ± 0.139	−0.772 ± 0.026	−0.754 ± 0.019

S⁺/H⁺ (× 10⁶)	0.077 ± 0.002	0.151 ± 0.004	0.310 ± 0.033	0.122 ± 0.004	0.039 ± 0.001
S⁺⁺/H⁺ (× 10⁶)	0.650 ± 0.050	0.725 ± 0.067	...	0.348 ± 0.068	0.233 ± 0.024
ICF	1.837	1.298	...	1.302	2.328
log(S/O)	−1.518 ± 0.032	−1.680 ± 0.035	...	−1.835 ± 0.065	−1.640 ± 0.041

Cl⁺⁺/H⁺ (× 10⁸)	...	...	...	...	...
ICF	...	...	...	...	...
log(Cl/O)	...	...	...	...	...

Ar⁺⁺/H⁺ (× 10⁷)	1.382 ± 0.066	1.259 ± 0.074	...	1.096 ± 0.099	0.667 ± 0.032
Ar⁺⁺⁺/H⁺ (× 10⁷)	0.983 ± 0.111	...	...	...	0.561 ± 0.042
ICF	1.760	1.263	...	1.266	2.244
log(Ar/O)	−2.258 ± 0.043	−2.535 ± 0.028	...	−2.480 ± 0.042	−2.267 ± 0.036

Fe⁺⁺/H⁺(× 10⁶)(4658)	0.195 ± 0.028	0.151 ± 0.029	...	0.174 ± 0.034	...
Fe⁺⁺/H⁺(× 10⁶)(4988)	...	0.175 ± 0.018	...	0.240 ± 0.025	...
ICF	11.599	6.475	...	6.507	...
log(Fe/O) (λ4658)	−1.290 ± 0.063	−1.747 ± 0.084	...	−1.568 ± 0.086	...
log(Fe/O) (4988)	...	−1.682 ± 0.046	...	−1.429 ± 0.047	...

Property	J1119+5130^a	J1132+5722No.1^a	J1132+5722No.2^a	J1132+5722No.3^a	J1154+4636^a

T_e(O iii) (K)	17000 ± 473	15826 ± 511	14711 ± 507	16725 ± 1052	15256 ± 372
T_e(O ii) (K)	15369 ± 387	14771 ± 434	14078 ± 445	15241 ± 870	14432 ± 321
T_e(S iii) (K)	15810 ± 393	14836 ± 424	14394 ± 421	15582 ± 873	14844 ± 308

O⁺/H⁺ (× 10⁴)	0.087 ± 0.006	0.107 ± 0.009	0.155 ± 0.014	0.125 ± 0.019	0.143 ± 0.009
O⁺⁺/H⁺ (× 10⁴)	0.219 ± 0.015	0.202 ± 0.017	0.389 ± 0.036	0.350 ± 0.054	0.404 ± 0.026
O⁺⁺⁺/H⁺ (× 10⁶)	1.428 ± 0.408	0.571 ± 0.108	...	...	1.682 ± 0.305
O/H (× 10⁴)	0.320 ± 0.017	0.315 ± 0.019	0.544 ± 0.039	0.475 ± 0.058	0.563 ± 0.027
12 + log(O/H)	7.505 ± 0.023	7.498 ± 0.026	7.736 ± 0.031	7.676 ± 0.053	7.751 ± 0.021

N⁺/H⁺ (× 10⁶)	0.201 ± 0.017	0.296 ± 0.023	0.649 ± 0.048	0.461 ± 0.078	0.612 ± 0.034
ICF	3.667	2.952	3.502	3.778	3.911
log(N/O)	−1.638 ± 0.044	−1.557 ± 0.041	−1.380 ± 0.045	−1.436 ± 0.091	−1.372 ± 0.032

Ne⁺⁺/H⁺ (× 10⁵)	0.479 ± 0.036	0.409 ± 0.036	0.579 ± 0.063	0.603 ± 0.106	0.907 ± 0.063
ICF	1.113	1.134	1.099	1.090	1.099
log(Ne/O)	−0.778 ± 0.048	−0.832 ± 0.059	−0.932 ± 0.067	−0.859 ± 0.109	−0.752 ± 0.044

S⁺/H⁺ (× 10⁶)	0.123 ± 0.007	0.234 ± 0.011	0.308 ± 0.017	0.240 ± 0.025	0.309 ± 0.013
S⁺⁺/H⁺ (× 10⁶)	0.447 ± 0.142	0.585 ± 0.101	0.805 ± 0.182	...	1.015 ± 0.138
ICF	1.145	1.038	1.120	...	1.183
log(S/O)	−1.690 ± 0.111	−1.569 ± 0.060	−1.640 ± 0.078	...	−1.556 ± 0.050

Cl⁺⁺/H⁺ (× 10⁸)	...	...	...	...	...
ICF	...	...	...	...	...
log(Cl/O)	...	...	...	...	...
Ar⁺⁺/H⁺ (× 10⁷)	0.702 ± 0.102	1.086 ± 0.121	2.030 ± 0.207	...	1.816 ± 0.154
Ar⁺⁺⁺/H⁺ (× 10⁷)	...	...	...	...	...
ICF	1.143	1.076	1.126	...	1.171
log(Ar/O)	−2.601 ± 0.067	−2.431 ± 0.055	−2.377 ± 0.054	...	−2.423 ± 0.043

Fe⁺⁺/H⁺(× 10⁶)(4658)	...	...	...	...	0.327 ± 0.055
Fe⁺⁺/H⁺(× 10⁶)(4988)	0.188 ± 0.038	0.278 ± 0.035	...	...	0.490 ± 0.067
ICF	4.999	3.954	...	...	5.363
log(Fe/O) (λ4658)	...	...	...	...	−1.507 ± 0.076
log(Fe/O) (4988)	−1.531 ± 0.090	−1.456 ± 0.060	...	...	−1.332 ± 0.063

Property	J1215+5223^a	J1224+3724^a	J1244+3212No.1^a	J1244+3212No.2^a	J1244+3212No.3^a

T_e(O iii) (K)	16226 ± 401	16288 ± 198	14734 ± 198	14010 ± 295	14238 ± 185
T_e(O ii) (K)	14990 ± 337	15022 ± 166	14093 ± 174	13579 ± 264	13746 ± 165
T_e(S iii) (K)	15168 ± 333	15219 ± 164	14414 ± 165	13794 ± 245	13992 ± 154

O⁺/H⁺ (× 10⁴)	0.100 ± 0.006	0.085 ± 0.003	0.218 ± 0.008	0.212 ± 0.013	0.240 ± 0.009
O⁺⁺/H⁺ (× 10⁴)	0.238 ± 0.015	0.503 ± 0.016	0.424 ± 0.016	0.587 ± 0.034	0.400 ± 0.015
O⁺⁺⁺/H⁺ (× 10⁶)	...	0.755 ± 0.087	0.651 ± 0.126	...	...
O/H (× 10⁴)	0.338 ± 0.016	0.596 ± 0.017	0.648 ± 0.018	0.799 ± 0.036	0.640 ± 0.017
12 + log(O/H)	7.529 ± 0.021	7.775 ± 0.012	7.812 ± 0.012	7.903 ± 0.020	7.806 ± 0.012

N⁺/H⁺ (× 10⁶)	0.275 ± 0.018	0.364 ± 0.013	0.496 ± 0.015	0.469 ± 0.023	0.647 ± 0.019
ICF	3.387	6.715	2.994	3.746	2.694
log(N/O)	−1.561 ± 0.035	−1.387 ± 0.020	−1.640 ± 0.018	−1.658 ± 0.029	−1.565 ± 0.017

Ne⁺⁺/H⁺ (× 10⁵)	0.486 ± 0.033	0.995 ± 0.035	0.916 ± 0.037	1.132 ± 0.073	0.808 ± 0.033
ICF	1.104	1.050	1.128	1.091	1.142
log(Ne/O)	−0.800 ± 0.043	−0.756 ± 0.021	−0.797 ± 0.027	−0.811 ± 0.040	−0.841 ± 0.027

S⁺/H⁺ (× 10⁶)	0.098 ± 0.005	0.140 ± 0.004	0.259 ± 0.006	0.246 ± 0.010	0.282 ± 0.007
S⁺⁺/H⁺ (× 10⁶)	0.630 ± 0.120	0.681 ± 0.063	0.742 ± 0.065	1.107 ± 0.142	0.902 ± 0.068
ICF	1.102	1.631	1.044	1.157	1.001
log(S/O)	−1.625 ± 0.075	−1.649 ± 0.036	−1.793 ± 0.031	−1.708 ± 0.050	−1.732 ± 0.028

Cl⁺⁺/H⁺ (× 10⁸)	...	2.159 ± 0.053	...	...	...
ICF	...	1.227	...	...	...
log(Cl/O)	...	−3.352 ± 0.016	...	...	...

Ar⁺⁺/H⁺ (× 10⁷)	1.259 ± 0.107	1.898 ± 0.077	2.183 ± 0.088	2.546 ± 0.151	2.453 ± 0.095
Ar⁺⁺⁺/H⁺ (× 10⁷)	...	1.026 ± 0.097	...	...	...
ICF	1.114	1.563	1.079	1.152	1.059
log(Ar/O)	−2.382 ± 0.043	−2.303 ± 0.031	−2.439 ± 0.021	−2.435 ± 0.032	−2.392 ± 0.021

Fe⁺⁺/H⁺(× 10⁶)(4658)	...	0.170 ± 0.022	0.130 ± 0.033	...	0.163 ± 0.021
Fe⁺⁺/H⁺(× 10⁶)(4988)	...	0.248 ± 0.022	...	...	...
ICF	...	9.645	4.014	...	3.586
log(Fe/O) (λ4658)	...	−1.560 ± 0.058	−2.096 ± 0.110	...	−2.040 ± 0.058
log(Fe/O) (4988)	...	−1.396 ± 0.041	...	...	...

Property	J1248+4823^a	J1327+4022^a	J1331+4151^a	J1355+4651^a	J1608+3528^a

T_e(O iii) (K)	16052 ± 195	16970 ± 234	17192 ± 183	19749 ± 287	17754 ± 265
T_e(O ii) (K)	14896 ± 165	15355 ± 192	15454 ± 149	16241 ± 210	15682 ± 211
T_e(S iii) (K)	15023 ± 162	15785 ± 194	15969 ± 152	18092 ± 238	16436 ± 220

O⁺/H⁺ (× 10⁴)	0.077 ± 0.003	0.041 ± 0.002	0.058 ± 0.002	0.020 ± 0.001	0.025 ± 0.001
O⁺⁺/H⁺ (× 10⁴)	0.536 ± 0.017	0.436 ± 0.015	0.433 ± 0.012	0.347 ± 0.012	0.578 ± 0.022
O⁺⁺⁺/H⁺ (× 10⁶)	1.260 ± 0.143	2.083 ± 0.186	0.989 ± 0.064	0.945 ± 0.149	1.729 ± 0.244
O/H (× 10⁴)	0.626 ± 0.018	0.497 ± 0.016	0.501 ± 0.012	0.377 ± 0.012	0.621 ± 0.022
12 + log(O/H)	7.796 ± 0.012	7.696 ± 0.014	7.700 ± 0.011	7.576 ± 0.014	7.793 ± 0.015

N⁺/H⁺ (× 10⁶)	0.232 ± 0.011	0.187 ± 0.012	0.173 ± 0.005	0.079 ± 0.012	0.055 ± 0.010
ICF	7.691	11.401	8.151	17.253	22.543
log(N/O)	−1.544 ± 0.026	−1.368 ± 0.032	−1.551 ± 0.018	−1.440 ± 0.073	−1.701 ± 0.087

Ne⁺⁺/H⁺ (× 10⁵)	1.045 ± 0.037	0.806 ± 0.031	0.840 ± 0.025	0.636 ± 0.023	1.271 ± 0.050
ICF	1.046	1.040	1.044	1.028	1.025
log(Ne/O)	−0.757 ± 0.021	−0.773 ± 0.023	−0.757 ± 0.018	−0.761 ± 0.022	−0.678 ± 0.024

S⁺/H⁺ (× 10⁶)	0.118 ± 0.003	0.085 ± 0.003	0.100 ± 0.002	0.041 ± 0.003	0.035 ± 0.005
S⁺⁺/H⁺ (× 10⁶)	0.784 ± 0.061	0.805 ± 0.072	0.716 ± 0.039	0.252 ± 0.045	...
ICF	1.791	2.402	1.866	3.375	...
log(S/O)	−1.588 ± 0.032	−1.367 ± 0.038	−1.518 ± 0.023	−1.582 ± 0.068	...

Cl⁺⁺/H⁺ (× 10⁸)	...	...	...	...	...
ICF	...	...	...	...	...
log(Cl/O)	...	...	...	...	...

Ar⁺⁺/H⁺ (× 10⁷)	2.377 ± 0.088	1.829 ± 0.107	1.774 ± 0.055	0.957 ± 0.085	0.927 ± 0.103
Ar⁺⁺⁺/H⁺ (× 10⁷)	0.793 ± 0.089	1.137 ± 0.129	1.084 ± 0.072	1.455 ± 0.094	2.176 ± 0.167
ICF	1.715	2.318	1.788	3.300	4.197
log(Ar/O)	−2.186 ± 0.026	−2.069 ± 0.042	−2.199 ± 0.024	−2.077 ± 0.059	−2.203 ± 0.093

Fe⁺⁺/H⁺(× 10⁶)(4658)	0.125 ± 0.024	0.225 ± 0.028	0.143 ± 0.020	...	...
Fe⁺⁺/H⁺(× 10⁶)(4988)	0.255 ± 0.031	...	...	...	...
ICF	11.156	16.938	11.871	...	...
log(Fe/O) (λ4658)	−1.651 ± 0.083	−1.116 ± 0.056	−1.470 ± 0.062	...	...
log(Fe/O) (4988)	−1.342 ± 0.054	...	...	...	...

Notes. ^a Direct method.

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