J/MNRAS/312/442 UV-selected galaxy redshift survey. II. (Sullivan+, 2000)
An ultraviolet-selected galaxy redshift survey.
II. The physical nature of star formation in an enlarged sample.
Sullivan M., Treyer M.A., Ellis R.S., Bridges T.J., Milliard B., Donas J.
<Mon. Not. R. Astron. Soc. 312, 442 (2000)>
=2000MNRAS.312..442S 2000MNRAS.312..442S
ADC_Keywords: Photometry, ultraviolet ; Redshifts ; Spectroscopy
Keywords: surveys - galaxies: evolution -
galaxies: luminosity function, mass function - galaxies: starburst -
cosmology: observations - ultraviolet: galaxies
Abstract:
We present further spectroscopic observations for a sample of galaxies
selected in the vacuum ultraviolet (UV) at 2000Å from the FOCA
balloon-borne imaging camera of Milliard et al. (1992A&A...257...24M 1992A&A...257...24M).
This work represents an extension of the initial study by Treyer et
al. (Cat. J/MNRAS/300/303). Our enlarged catalogue contains 433
sources (∼3 times as many as in our earlier study) across two FOCA
fields. 273 of these are galaxies, nearly all with redshifts z∼0-0.4.
Nebular emission-line measurements are available for 216 galaxies,
allowing us to address issues of excitation, reddening and
metallicity. The UV and Hα luminosity functions strengthen our
earlier assertions that the local volume-averaged star formation rate
is higher than indicated from earlier surveys. Moreover, internally
within our sample, we do not find a steep rise in the UV luminosity
density with redshift over 0<z<0.4. Our data are more consistent with
a modest evolutionary trend, as suggested by recent redshift survey
results. Investigating the emission-line properties, we find no
evidence for a significant number of AGN in our sample; most
UV-selected sources to z∼0.4 are intense star-forming galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 108 346 The updated UV-z catalogue
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See also:
J/MNRAS/300/303 : UV-selected galaxy redshift survey (Treyer+, 1998)
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Sample Sample name (1)
16 I1 --- OC [1-3] Number of optical counterparts (2)
18- 19 I2 h RAh Right ascension (1950) (3)
21- 22 I2 min RAm Right ascension (1950) (3)
24- 28 F5.2 s RAs Right ascension (1950) (3)
30 A1 --- DE- Declination sign (1950) (3)
31- 32 I2 deg DEd Declination (1950) (3)
34- 35 I2 arcmin DEm Declination (1950) (3)
37- 40 F4.1 arcsec DEs Declination (1950) (3)
42- 46 F5.2 mag UV UV (around 200nm) magnitude
48- 53 F6.4 --- z ? Redshift
55- 59 F5.1 0.1nm EW[OII] ? [O II] rest-frame equivalent width
61- 66 F6.2 0.1nm EW(Ha) ? Hα rest-frame equivalent width
68- 71 F4.1 0.1nm EW(Hb) ? Hβ rest-frame equivalent width
73 I1 --- Type ? Galaxy T type (4)
75- 80 F6.2 mag UVMag ? Absolute UV magnitude
82- 86 F5.2 mag (UV-B)0 ? Rest-frame- and dust-corrected
(UV-B) colour index
88-117 A30 --- Com Comments
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Note (1): Abell 1367, Paper I (Cat. J/MNRAS/300/303), QSO/AGN, SA 57 and Stars
Note (2): Number of optical counterparts on the POSS plates within 10 arcsec.
Note (3): The position (1950) is that of the closest optical counterpart.
Note (4): Galaxy type, classified on the basis of UV-B colour;
T=1-8 refers to types E, S0, Sa, Sb, Sc, Sd, SB1 and SB2.
All colours are rest-frame- and dust-corrected.
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History: From MNRAS electronic version
(End) James Marcout, Patricia Bauer [CDS] 31-May-2000