J/ApJ/269/352 Quasar evolution (Schmidt+, 1983)
Quasar evolution derived from the Palomar Bright Quasar Survey and
other complete quasar surveys.
Schmidt M., Green R.F.
<Astrophys. J. 269, 352 (1983)>
=1983ApJ...269..352S 1983ApJ...269..352S (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; QSOs
Keywords: cosmology - luminosity functions - quasars
Abstract:
We present the Bright Quasar Survey (BQS) consisting of 114 objects to
an average limiting magnitude B=16.16 over an area of 10714°2.
There are 92 quasars with MB←23 in the sample. We use the BQS and
complete samples from published surveys to derive models of the
statistical evolution of quasars. The increase of space density with
redshift depends strongly on absolute luminosity, being close to zero
for low-luminosity quasars. Detailed predictions are given for the
distribution of redshifts and magnitudes and for the total counts
based on the evolution models.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 105 114 The Palomar Bright Quasar Survey
table3.dat 21 60 Complete quasar samples
table8.dat 20 110 Redshift-magnitude table a for model HH1 (G1)
table9.dat 20 110 Redshift-magnitude table a for model HL1 (G1)
table10.dat 20 110 Redshift-magnitude table a for model HH5 (G1)
table11.dat 20 110 Redshift-magnitude table a for model HL5 (G1)
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See also:
J/AJ/108/1163 : Radio structure of Quasars (Kellermann+ 1994)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- PG PG number
11- 12 I2 h RAh Right ascension (1950.0)
14- 15 I2 min RAm Right ascension (1950.0)
17- 20 F4.1 s RAs Right ascension (1950.0)
22 A1 --- DE- Declination sign (1950.0)
23- 24 I2 deg DEd Declination (1950.0)
26- 27 I2 arcmin DEm Declination (1950.0)
29- 30 I2 arcsec DEs Declination (1950.0)
32- 36 F5.3 --- z Redshift
38- 42 F5.2 mag Bmag B magnitude
44- 48 F5.2 mag Blim Limiting B magnitude
50- 52 A3 --- Neb Nebulosity flag
54- 62 A9 --- Rem Remarks
64- 69 F6.2 mag BMAG1 Absolute B magnitude, for q=0.1 models (G1)
71- 76 F6.2 --- log(1/Va')hh1 Inverse of density-weighted accessible volume,
log(1/Va'), for model HH1 (G1)
78- 83 F6.2 --- log(1/Va')hl1 Inverse of density-weighted accessible volume,
log(1/Va'), for model HL1 (G1)
85- 90 F6.2 mag BMAG5 Absolute B magnitude, for q=0.5 models (G1)
92- 96 F5.2 --- log(1/Va')hh5 Inverse of density-weighted accessible volume,
log(1/Va'), for model HH5 (G1)
98-103 F6.2 --- log(1/Va')hl5 Inverse of density-weighted accessible volume,
log(1/Va'), for model HL5 (G1)
105 A1 --- Note [*] Note (1)
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Note (1): The correct cross-id for PG 1535+547 is I Zw 121 NOTES01
(one of two objects with the name I Zw 121 = CGPG 1535.3+5443), while
I Zw 120 is a basically unstudied object at 1535.0+4728. The cross-id in
Schmidt & Green (1983ApJ...269..352) should say I Zw 121 - not I Zw 120.
The redshift for I Zw 121 in NED is 0.03893±0.00009; 1991RC3.9.C...0000d.
Note from Marion Schmitz (NED).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name Quasar name (1)
7 A1 --- n_Name [b] Note on Redshift (2)
9- 13 F5.3 --- z Redshift
14- 15 A2 --- u_z [: ] Uncertainty flag on z
17- 21 F5.2 mag Bmag B magnitude
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Note (1): Nomenclature:
AB: Braccesi sample , 1980A&A....85...80B 1980A&A....85...80B
CT and UM: Curtis-Schmidt samples, from CTIO survey and University
of Michigan survey, respectively
HS and SW: 4-m grating prism surveys,
HS: Hoag-Smith, 1977ApJ...217..362H 1977ApJ...217..362H, [HS77] HHMMSS.s-DDMMSS,
SW: Sramek-Weedman 1978ApJ...221..468S 1978ApJ...221..468S, KP NN,
KC: Kron-Chiu sample, 1981PASP...93..397K 1981PASP...93..397K, Chiu SA 57 NNN
Note (2): b: the redshift is based on the arbitrary identification of the single
observed emission line as CIV. Differents values of the redshift
will result if the line is identified as Lyα or MgII emission
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Byte-by-byte Description of file: table8.dat table9.dat table10.dat table11.dat
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Bytes Format Units Label Explanations
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1- 3 F3.1 --- z Redshift
5- 9 F5.2 mag AB(6500) AB(6500) magnitude
11- 12 I2 mag Bmag Bmagnitude
14- 20 F7.4 --- n(Bmag+z) Surface density, for AB(6500), Bmag and z (1)
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Note (1): Average values:
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AB(6500) 13.55 14.55 15.55 16.55 17.55 18.55 19.55 20.55 21.55 22.55 23.5
B 14 15 16 17 18 19 20 21 22 23 24
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N(z<3.5) 0.0008 0.0056 0.0517 0.415 2.71 13.5 51.1 95 101 61 6
N(z<3.5) 0.0009 0.0056 0.0517 0.398 2.28 8.6 24.3 29 14 4 0
N(z<3.5) 0.0007 0.0056 0.0501 0.410 2.84 15.2 49.0 97 102 15 0
N(z<3.5) 0.0007 0.0056 0.0501 0.388 2.33 10.3 23.4 26 16 2 0
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GLobal notes:
Note (G1): Evolution models:
Models
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Parameter HH1 HL1 HH5 HL5
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q0 0.1 0.1 0.5 0.5
M0 -21.87 -23.26 -20.12 -22.01
k 3.13 4.19 2.18 3.14
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History:
25-Jun-2001: Prepared via OCR at CDS.
25-May-2020: Table 1 corrected, corrections from Heinz Andernach,
and Note added for PG 1535+547, from Marion Schmitz (NED)
(End) James Marcout, Patricia Bauer [CDS] 25-Jun-2001