J/AJ/119/2540 Asiago-ESO/RASS QSO survey. I. (Grazian+, 2000)
The Asiago-ESO/RASS QSO survey.
I. The catalog and the local QSO luminosity function.
Grazian A., Cristiani S., D'Odorico V., Omizzolo A., Pizzella A.
<Astron. J. 119, 2540 (2000)>
=2000AJ....119.2540G 2000AJ....119.2540G
ADC_Keywords: QSOs ; Magnitudes ; Redshifts
Keywords: galaxies: clusters: general
Abstract:
This paper presents the first results of a survey for bright quasars
(V<14.5 and R<15.4) covering the northern hemisphere at Galactic
latitudes |b|>30°. The photometric database is derived from the
Guide Star and USNO catalogs. Quasars are identified on the basis of
their X-ray emission measured in the ROSAT All-Sky Survey. The surface
density of quasars brighter than 15.5mag turns out to be
(10±2)x10-3deg-2, about 3 times higher than that estimated by
the Palomar-Green (PG) survey. The quasar optical luminosity function
(LF) at 0.04<z≤0.3 is computed and shown to be consistent with a
luminosity-dependent luminosity evolution of the type derived by La
Franca & Cristiani (1997AJ....113.1517L 1997AJ....113.1517L) in the range 0.3<z≤2.2. The
predictions of semianalytical models of hierarchical structure
formation agree remarkably well with the present observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 62 338 USNO sample
table3.dat 56 178 GSC sample
table4.dat 58 18 Other spectroscopic identifications
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See also:
II/207 : Palomar-Green catalog UV-excess stellar objects (Green+ 1986)
I/243 : The PMM USNO-A1.0 Catalogue (Monet 1997)
I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)
I/254 : The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)
I/255 : The HST Guide Star Catalog, Version GSC-ACT (Lasker+ 1996-99)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- 1RXS Source designation
18- 19 I2 h RAh Right ascension (J2000.0)
21- 22 I2 min RAm Right ascension (J2000.0)
24- 27 F4.1 s RAs Right ascension (J2000.0)
29 A1 --- DE- Declination sign (J2000.0)
30- 31 I2 deg DEd Declination (J2000.0)
33- 34 I2 arcmin DEm Declination (J2000.0)
36- 39 F4.1 arcsec DEs Declination (J2000.0)
41- 45 F5.2 mag Rmag USNO R magnitude
47- 51 F5.2 mag Vmag ? GSC V magnitude
53- 57 F5.3 --- z ? Redshift
59- 62 A4 --- Type Type of source (G1)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- 1RXS Source designation
18- 19 I2 h RAh Right ascension (J2000.0)
21- 22 I2 min RAm Right ascension (J2000.0)
24- 27 F4.1 s RAs Right ascension (J2000.0)
29 A1 --- DE- Declination sign (J2000.0)
30- 31 I2 deg DEd Declination (J2000.0)
33- 34 I2 arcmin DEm Declination (J2000.0)
36- 39 F4.1 arcsec DEs Declination (J2000.0)
41- 45 F5.2 mag Vmag GSC V magnitude
47- 51 F5.3 --- z ? Redshift
53- 56 A4 --- Type Type (G1)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- 1RXS Source designation
18- 19 I2 h RAh Right ascension (J2000.0)
21- 22 I2 min RAm Right ascension (J2000.0)
24- 28 F5.2 s RAs Right ascension (J2000.0)
30 A1 --- DE- Declination sign (J2000.0)
31- 32 I2 deg DEd Declination (J2000.0)
34- 35 I2 arcmin DEm Declination (J2000.0)
37- 40 F4.1 arcsec DEs Declination (J2000.0)
42- 46 F5.2 mag Bjmag Bj magnitude
48- 52 F5.3 --- z ? Redshift
53 A1 --- u_z Uncertainty flag on z
55- 58 A4 --- Type Type (G1)
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Global note (G1): Types:
AGN: AGN
BL: BL Lac object
Gal: galaxy
Star: star
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History:
From AJ electronic version
(End) James Marcout, Patricia Bauer [CDS] 31-Aug-2000