VII/143 Quasar Candidates (Crampton+ 1985-1990)
Quasar Candidates from grens plates
Crampton D., Schade D., Cowley A.P.: 1985
<Astron. J. 90, 987 (1985)>
=1985AJ.....90..987C 1985AJ.....90..987C
Quasar candidates in two extended CFHT fields: 1338+27 and 1639+40.
Crampton D., Cowley A.P., Schmidtke P.C.: 1988
<Astron. J. 96, 816 (1988)>
=1988AJ.....96..816C 1988AJ.....96..816C
Redshifts of quasars in the CFHT/MMT survey. III.
Crampton D., Cowley A.P., Hartwick F.D.A: 1990
<Astron. J. 100, 47 (1990)>
=1990AJ....100...47C 1990AJ....100...47C
ADC_Keywords: QSOs ; Redshifts
Description:
This data set is based on data in three publications. The positions
and magnitudes of quasar candidates discovered on Canada-France
Hawaii-Telescope (CFHT) blue green plates are given. Spectroscopy with
the Multiple Mirror Telescope (MMT) indicates that 70 percent of the
candidates are quasars, and most of the others are white dwarfs or hot
subluminous stars. Most of the redshifts are less than z=1.7.
Additional spectroscopic observations at Steward Observatory were
used. The catalog lists a name based on position, B1950 position,
B magnitude, or visual magnitude, redshift, and remarks.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 51 777 The catalogue
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See also:
VII/158 : Catalog of quasi-stellar objects (Hewitt & Burbidge, 1993)
VII/188 : Quasars and Active Galactic Nuclei (7th Ed.) (Veron+ 1996)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1 A1 --- Rem [*] if there is a remark in the
original catalogue
2- 12 A11 --- Name Designation based on position
15- 16 I2 h RAh Right Ascension 1950 (hours)
18- 19 I2 min RAm Right Ascension 1950 (minutes)
21- 24 F4.1 s RAs Right Ascension 1950 (seconds)
27 A1 --- DE- Declination 1950 (sign)
28- 29 I2 deg DEd Declination 1950 (degrees)
31- 32 I2 arcmin DEm Declination 1950 (minutes)
34- 35 I2 arcsec DEs Declination 1950 (seconds)
38- 41 F4.1 mag Bmag B Magnitude, or visual estimate (cf n_Bmag)
42 A1 --- n_Bmag [*] when Bmag is a visual estimate
44- 48 F5.3 --- z ? Redshift (the last digit may be blank)
49 A1 --- u_z [*:?] Uncertainty flag on z
(* when z in unknown)
50- 51 A2 --- Nature Remarks on the nature of the object
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Acknowledgements:
It is a pleasure to thank David Crampton
for providing the electronic data to M. Creze in October 1991,
and for reviewing the initial version of the files.
(End) Francois Ochsenbein [CDS] 27-Nov-1996