J/MNRAS/330/75 Chemical abundances in UV-selected galaxies (Contini+, 2002)
Chemical abundances in a UV-selected sample of galaxies.
Contini T., Treyer M.A., Sullivan M., Ellis R.S.
<Mon. Not. R. Astron. Soc. 330, 75 (2002)>
=2002MNRAS.330...75C 2002MNRAS.330...75C
ADC_Keywords: Photometry, ultraviolet ; Redshifts ; Spectroscopy ; Abundances
Keywords: galaxies: abundances - galaxies: evolution - galaxies: starburst -
ultraviolet: galaxies
Abstract:
We discuss the chemical properties of a sample of UV-selected
intermediate-redshift (0≤z≤0.4) galaxies in the context of their
physical nature and star-formation history. This work represents an
extension of our previous studies of the rest-frame UV-luminosity
function (Treyer et al., 1998, Cat. J/MNRAS/300/303) and the
star-formation properties of the same sample (Sullivan et al., 2000,
Cat. J/MNRAS/312/442). We revisit the optical spectra of these
galaxies and perform further emission-line measurements restricting
the analysis to those spectra with the full set of emission lines
required to derive chemical abundances. Our final sample consists of
68 galaxies with heavy-element abundance ratios and both UV and CCD
B-band photometry.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 105 68 The sample of UV-selected galaxies with
measurements of chemical abundances, part 1
table2.dat 65 68 The sample of UV-selected galaxies with
measurements of chemical abundances, part 2
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See also:
J/MNRAS/300/303 : UV-selected galaxy redshift survey. I. (Treyer+, 1998)
J/MNRAS/312/442 : UV-selected galaxy redshift survey. II. (Sullivan+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [CTS2002] [1/68] Sequential number
4- 5 I2 h RAh Right ascension (1950)
7- 8 I2 min RAm Right ascension (1950)
10- 14 F5.2 s RAs Right ascension (1950)
16 A1 --- DE- Declination sign (1950)
17- 18 I2 deg DEd Declination (1950)
20- 21 I2 arcmin DEm Declination (1950)
23- 26 F4.1 arcsec DEs Declination (1950)
28 A1 --- OCs Number of optical counterparts in the
POSS plates within 10"
30- 34 F5.2 --- [OIII]/[OII] Emission-line ratio [OIII]/[OII]
36- 39 F4.2 --- e_[OIII]/[OII] rms uncertainty on [OIII]/[OII]
41- 45 F5.2 --- [OIII]/Hbeta Emission-line ratio [OIII]/Hβ
47- 50 F4.2 --- e_[OIII]/Hbeta rms uncertainty on [OIII]/Hβ
52- 56 F5.2 --- [NII]/Halpha Emission-line ratio [NII]/Hα
58- 61 F4.2 --- e_[NII]/Halpha rms uncertainty on [NII]/Hα
63- 67 F5.2 --- [SII]/Halpha ? Emission-line ratio [SII]/Hα
69- 72 F4.2 --- e_[SII]/Halpha ? rms uncertainty on [SII]/Hα
74- 78 F5.2 --- [NII]/[OII] Emission-line ratio [NII]/[OII]
80- 83 F4.2 --- e_[NII]/[OII] rms uncertainty on [NII]/[OII]
85- 88 F4.2 --- log(R23) R23 = ([OII]3727+[OIII]4959,5007)/Hβ
90- 93 F4.2 --- e_log(R23) rms uncertainty on log(R23)
95 A1 --- Note [UL?] Flag (1)
97-100 F4.2 --- O/HL Oxygen abundance, 12+log(O/H),
on the lower branch (2)
102-105 F4.2 --- O/HU Oxygen abundance, 12+log(O/H),
on the upper branch (2)
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Note (1): Flag indicating if the object lies on the lower (L) or
in the upper (U) branch of the O/H versus R23 relationship, or falls
in the turnaround region (?).
Note (2): Oxygen abundances derived from the empirical calibrations
(McGaugh, 1991ApJ...380..140M 1991ApJ...380..140M)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [CTS2002] [1/68] Sequential number
4- 5 I2 h RAh Right ascension (1950)
7- 8 I2 min RAm Right ascension (1950)
10- 14 F5.2 s RAs Right ascension (1950)
16 A1 --- DE- Declination sign (1950)
17- 18 I2 deg DEd Declination (1950)
20- 21 I2 arcmin DEm Declination (1950)
23- 26 F4.1 arcsec DEs Declination (1950)
28 A1 --- OCs Number of optical counterparts in the
POSS plates within 10"
30- 34 F5.3 --- z Redshift
36- 39 F4.2 mag AV Extinction coefficient in V band
41- 44 F4.2 mag e_AV rms uncertainty on AV
46- 49 F4.2 --- 12+log(O/H) 12+log(O/H) abundance ratio
51- 54 F4.2 --- e_12+log(O/H) rms uncertainty on 12+log(O/H)
56- 60 F5.2 --- log(N/O) log(N/O) abundance ratio
62- 65 F4.2 --- e_log(N/O) rms uncertainty on log(N/O)
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 28-Mar-2002