J/A+AS/140/351 UBV photometry of SGP AGNs (La Franca+, 1999)
A survey of UV-excess AGNs in the South Galactic Pole
La Franca F., Lissandrini C., Cristiani S., Miller L., Hawkins M.R.S.,
McGillivray H.T.
<Astron. Astrophys. Suppl. Ser. 140, 351 (1999)>
=1999A&AS..140..351L 1999A&AS..140..351L
ADC_Keywords: QSOs ; Active gal. nuclei ; Photometry, UBV ; Redshifts
Keywords: cosmology - catalogs - surveys - quasar: general
Abstract:
Spectra, position, magnitudes and colors are presented for 485 faint
(BJ<20.5) emission line objects selected with the ultraviolet-excess
(UVX) criterion on a area of 24.6 sq. deg. in the South Galactic Pole.
The objects were selected from the analysis of pixel-to-pixel stacking
of COSMOS scans of UKST UJ and R plates. The candidates were
observed with the Meudon-ESO Fiber Optics System (MEFOS) at the ESO
3.6m telescope. 429 type 1 AGNs have been identified (373 in the
redshift range 0.3<z≤2.2). This sample has allowed the measure of a
difference on the QSO clustering evolution in comparison with that
found for galaxies (La Franca et al., 1998ApJ...497..529L 1998ApJ...497..529L). The region
is part of the ESO Imaging Survey (EIS) and of the 2dF QSO redshift
survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 57 485 AGN catalogue in the SGP
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See also:
VII/207 : Quasars and Active Galactic Nuclei (8th Ed.) (Veron+ 1998)
VII/182 : SGP and F401 high-redshift quasars catalog, z≥2.2 (Warren+ 1991)
VII/179 : Kiso Survey for ultraviolet-excess galaxies. XVIII (Takase+ 1993)
J/MNRAS/268/305 : Variability of optically selected quasars (Hook+ 1994)
J/MNRAS/243/1 : A catalogue of faint UV-excess objects (Boyle+ 1990)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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2- 3 I2 h RAh Right Ascension, equinox 1950
5- 6 I2 min RAm Right Ascension, equinox 1950
8- 11 F4.1 s RAs Right Ascension, equinox 1950
13 A1 --- DE- Declination sign, equinox 1950
14- 15 I2 deg DEd Declination, equinox 1950
17- 18 I2 arcmin DEm Declination, equinox 1950
20- 21 I2 arcsec DEs Declination, equinox 1950
24- 28 F5.2 mag Bmag Bj magnitude
30- 34 F5.2 mag U-B U-B colour index
36- 40 F5.2 mag B-V B-V colour index
43- 45 A3 --- Ident Identification (1)
48- 52 F5.3 --- z Redshift
55- 57 A3 --- Comm Comments (2)
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Note (1): QSO = Broad emission line AGN
NL = Narrow emission line spectrum
Note (2): a = Veron-Cetty & Veron (1998, Cat. VII/207)
b = Cristiani et al. (1995A&AS..112..347C 1995A&AS..112..347C)
c = Warren et al. (1991, Cat. VII/182)
d = Uncertain redshift
e = Hook et al. (1994, Cat. J/MNRAS/268/305)
f = Boyle et al. (1990, Cat. J/MNRAS/243/1)
g = Spectrum missing in Fig. 1
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Acknowledgements: Fabio La Franca
(End) Patricia Bauer [CDS] 07-Dec-1999