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J/A+A/321/123 Optical variability of QSOs (Cristiani+ 1997)
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The optical variability of QSOs. II. The wavelength dependence
Cristiani S., Trentini S., La Franca F., Andreani P.
<Astron. Astrophys. 321, 123 (1997)>
=1997A&A...321..123C (SIMBAD/NED BibCode)
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ADC_Keywords: QSOs
Keywords: quasars: general
Description:
The SA94 variability sample is made up of 149 optically selected
quasars listed in this table, observed in a rectangular area of
the sky within the limits 2h 43m 51.2s < RA < 2h 59m 14.3s,
-2deg 03' 23.8" < DEC < 2deg 32' 11.0" (Epoch 1950.0),
covering 17.66 sq.deg.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 49 149 List of the QSOs in the SA94
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (1950)
4- 5 I2 min RAm Right ascension (1950)
7- 11 F5.2 s RAs Right ascension (1950)
15 A1 --- DE- Declination sign
16- 16 I1 deg DEd Declination (1950)
18- 19 I2 arcmin DEm Declination (1950)
21- 24 F4.1 arcsec DEs Declination (1950)
27- 31 F5.3 --- z Redshift
34- 38 F5.2 mag R' Magnitude R'
41- 45 F5.2 mag+2 IDX ? Variability index
48 A1 --- Type See Note (1)
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Note (1): a: Cristiani S., La Franca F., Barbieri C., Clowes R.G., Iovino A.,
1991MNRAS.250..531C
b: Barbieri C., Cristiani S., 1986A&AS...63....1B
c: Veron-Cetty M.P., Veron P., 1993, Catalogue <VII/18>
d: La Franca F., Cristiani S., Barbieri C., 1992AJ....103.1062L
e: Cristiani S., Trentini S., La Franca F., Aretxaga I., Andreani P.,
Vio R., Gemmo A., (Paper I) 1996A&A...306..395C
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Acknowledgements: Stefano Cristiani <cristiani@astrpd.pd.astro.it>
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(End) Stefano Cristiani [Universita` di Padova] 16-Oct-1996