J/ApJS/267/16 Strong [OIII]5007 emission-line compact galaxies (Liu+, 2023)
Ionized-gas metallicity of the strong [OIII]λ5007 emission-line compact
galaxies in the LAMOST survey.
Liu S., Luo A.-L., Zhang W., Kong X., Zhang Y.-X., Shen S.-Y., Zhao Y.-H.
<Astrophys. J. Suppl. Ser., 267, 16 (2023)>
=2023ApJS..267...16L 2023ApJS..267...16L
ADC_Keywords: Galaxies, spectra; Photometry, SDSS; Redshifts; Equivalent widths;
Surveys
Keywords: Compact galaxies
Abstract:
This article reports a sample of 1830 strong [OIII]λ5007
emission-line compact galaxies discovered with the LAMOST
spectroscopic survey and the photometric catalog of the Sloan Digital
Sky Survey. We newly identify 402 spectra of 346 strong
[OIII]λ5007 emission-line compact galaxies by finding compact
isolated point sources. Combined with the samples in our previous
work, this returns a sample of 1830 unique strong [OIII]λ5007
emission-line compact galaxies with 2033 spectra of z≤0.53. For the
sources with 2σ[OIII]λ4363 detections, we calculate the
gas-phase metallicity with the direct-Te method, and verify that the
strong-line metallicity diagnostics calibrated with the direct-Te
method also applies to this sample. The strong [OIII]λ5007
emission-line compact galaxies fall below several Te-calibrated
mass-metallicity relations. The N/O measurements of the strong
[OIII]λ5007 emission-line compact galaxies mainly locate at a
plateau at low metallicity, indicating the product of primary
nucleosynthesis. The Ne3O2 and O32 relation follows a tight linear
relation with no redshift evolution. The Ne3O2 anticorrelates with the
stellar mass, and at fixed stellar mass the Ne3O2 increases with the
redshift. Eight sources with asymmetric [OIII]λ5007
emission-line profiles have been identified, however with no
[OIII]λ4363 detection, which proves the rich metal content and
complex ionized-gas kinematics within the galaxies. Higher-resolution
spectroscopy will be necessary to identify the ionized-gas components
in detail.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 450 2068 Catalog of strong [OIII]λ5007 emission-line
compact galaxies from LAMOST DR10 and SDSS
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See also:
II/335 : Revised catalog of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)
V/156 : LAMOST DR7 catalogs (Luo+, 2019)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
J/A+A/448/955 : Abundances of emission galaxies in SDSS-DR3 (Izotov+, 2006)
J/A+A/459/85 : O/H & gas densities in star-forming galaxies (Nagao+, 2006)
J/MNRAS/424/2316 : Abundances in HII regions (Pilyugin+, 2012)
J/ApJ/765/140 : Stacked sp. of SDSS star forming galaxies (Andrews+, 2013)
J/MNRAS/474/1873 : Classification of LAMOST DR4 galaxies (Wang+, 2018)
http://www.lamost.org/dr10/ : LAMOST DR10 home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq [0/2067] Index number
6- 14 I9 --- ObsID [203141/999511097] LAMOST unique object
identifier
16- 20 I5 --- LMJD [55859/59670] Local Modified Julian Day
of spectroscopic observation
22- 41 A20 --- PlanId Spectroscopic plan identifications
43- 44 I2 --- spId [1/16] Spectrograph identification
46- 48 I3 --- FiberId [1/250] Fiber number of spectrum
50- 52 A3 --- OType Object type from input catalog
("gal": 1622 occurrences)
54- 60 A7 --- Class Class of object
("GALAXY": 2030 occurrences;
"QSO": 21 occurrences;
"STAR": 3 occurrences;
"Unknown": 14 occurrences)
62- 67 F6.4 --- z [0/0.53] Spectroscopic redshift
69- 81 A13 --- tfrom Target catalog
83- 92 F10.6 deg RAdeg Right Ascension (J2000)
94- 103 F10.7 deg DEdeg [-6.6/60] Declination (J2000)
105- 123 I19 -- ObjID Unique SDSS identifier
125 I1 --- Type [3/6] Object type classification
(3=galaxy (1708 occurrences); 6=star)
127 I1 --- Clean [0/1] Clean photometry flag (1=clean,
0=unclean)
129- 133 F5.2 mag umag [17.4/24] DeV+Exp SDSS u band magnitude
135- 139 F5.2 mag gmag [15.4/24] DeV+Exp SDSS g band magnitude
141- 145 F5.2 mag rmag [15.5/22.7] DeV+Exp SDSS r band magnitude
147- 151 F5.2 mag imag [15.5/31] DeV+Exp SDSS i band magnitude
153- 157 F5.2 mag zmag [17.2/23.3] DeV+Exp SDSS z band magnitude
159- 162 F4.2 mag e_umag [0.02/7.3] Uncertainty in umag
164- 167 F4.2 mag e_gmag [0/0.8] Uncertainty in gmag
169- 172 F4.2 mag e_rmag [0.01/1.2] Uncertainty in rmag
174- 177 F4.2 mag e_imag [0.01/9.6] Uncertainty in imag
179- 183 F5.2 mag e_zmag [0.02/11.4] Uncertainty in zmag
185- 188 F4.2 arcsec rPRad [0.7/4.6] R band Petrosian radius
190- 193 F4.2 arcsec rPRad50 [0.39/4] Radius containing 50% of r
band Petrosian flux
195- 198 F4.2 arcsec rPRad90 [0.5/5.6] Radius containing 90% of r
band Petrosian flux
200- 207 F8.2 10-17mW/m2 OII [0/35505]? The [OII]3727,3729Å line
flux; erg/s/cm2
209- 217 F9.2 10-17mW/m2 NeIII3869 [0/518125]? The [NeIII]3869Å line
flux; erg/s/cm2
219- 224 F6.2 10-17mW/m2 OIII4363 [0/403] The [OIII]4363Å line flux;
erg/s/cm2
226- 235 F10.2 10-17mW/m2 Hb [0/1740340] Hβ line flux;
erg/s/cm2
237- 246 F10.2 10-17mW/m2 OIII4959 [0.6/3213503] The [OIII]4959Å line
flux; erg/s/cm2
248- 257 F10.2 10-17mW/m2 OIII5007 [0/8529344] The [OIII]5007Å line flux;
erg/s/cm2
259- 264 F6.2 10-17mW/m2 NII6548 [0/685]? The [NII]6584Å line flux;
erg/s/cm2
266- 275 F10.2 10-17mW/m2 Ha [0/1048880]? Hα line flux;
erg/s/cm2
277- 283 F7.2 10-17mW/m2 NII6584 [0/2055]? The [NII]6584Å line flux;
erg/s/cm2
285- 294 F10.2 10-17mW/m2 SII6716 [0/3756169]? The [SII]6716Å line flux;
erg/s/cm2
296- 305 F10.2 10-17mW/m2 SII6731 [0/5524708]? The [SII]6731Å line flux;
erg/s/cm2
307- 312 F6.2 10-17mW/m2 e_OII [0.1/340]? Uncertainty in OII
314- 322 F9.2 10-17mW/m2 e_NeIII3869 [0/307732]? Uncertainty in NeIII3869
324- 329 F6.2 10-17mW/m2 e_OIII4363 [0/120]? Uncertainty in OIII4363
331- 339 F9.2 10-17mW/m2 e_Hb [0/813614]? Uncertainty in Hb
341- 350 F10.2 10-17mW/m2 e_OIII4959 [0.1/1706806]? Uncertainty in OIII4959
352- 361 F10.2 10-17mW/m2 e_OIII5007 [0.07/3665418]? Uncertainty in OIII5007
363- 368 F6.2 10-17mW/m2 e_NII6548 [0/205]? Uncertainty in NII6548
370- 383 F14.2 10-17mW/m2 e_Ha [0/17711642259]? Uncertainty in Ha
385- 390 F6.2 10-17mW/m2 e_NII6584 [0/119]? Uncertainty in NII6584
392- 401 F10.2 10-17mW/m2 e_SII6716 [0/2383182]? Uncertainty in SII6716
403- 412 F10.2 10-17mW/m2 e_SII6731 [0/3151166]? Uncertainty in SII6731
414- 420 F7.2 0.1nm EW [-622/9737]? Equivalent width of
[OIII]5007Å emission line; Angstroms
422- 429 E8.2 cm-3 ne [4.4e-08/429000000000] Electron number
density
431- 436 F6.2 solMass Mass [2.79/367]? CIGALE stellar mass
438- 450 F13.4 0.1nm sigma [0/12443083] Velocity dispersion of
[OIII]5007Å emission line; Angstroms
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 21-Aug-2023