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J/A+A/319/413 ROSAT detected quasars. I. (Brinkmann+ 1997)
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Broad-band energy distribution of ROSAT detected quasars. I. Radio-loud objects.
Brinkmann W., Yuan W., Siebert J.
<Astron. Astrophys. 319, 413 (1997)>
=1997A&A...319..413B (SIMBAD/NED BibCode)
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ADC_Keywords: QSOs ; X-ray sources
Keywords: galaxies: active - quasars: general - radio sources: galaxies -
X-rays: galaxies
Mission_Name: ROSAT
Abstract:
We have compiled a sample of all quasars with measured radio emission
from the Veron-Cetty - Veron catalogue (1993, VV93 <VII/166>) detected
by ROSAT in the ALL-SKY SURVEY (RASS, Voges 1992), as targets of
pointed observations, or as serendipitous sources from pointed
observations as publicly available from the ROSAT point source
catalogue (ROSAT-SRC, Voges et al. 1995). The total number of ROSAT
detected radio quasars from the above three sources is 654 objects. 69
of the objects are classified as radio-quiet using the defining line
at a radio-loudness of 1.0, and 10 objects have no classification. The
5GHz data are from the 87GB radio survey, the NED database, or from
the Veron-Cetty - Veron catalogue. The power law indices and their
errors are estimated from the two hardness ratios given by the SASS
assuming Galactic absorption. The X-ray flux densities in the ROSAT
band (0.1-2.4keV) are calculated from the count rates using the energy
to counts conversion factor for power law spectra and Galactic
absorption. For the photon index we use the value obtained for a
individual source if the estimated 1 sigma error is smaller than 0.5,
otherwise we use the mean value 2.14.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 109 654 654 ROSAT detected radio quasars
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See also:
VII/188 : Quasars and Active Galactic Nuclei (7th Ed.) (Veron+ 1996)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1996)
IX/11 : ROSAT Source Catalog (Voges+ 1994)
J/A+A/330/108 : ROSAT detected quasars. II. (Yuan+ 1998)
Byte-by-Byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- IAU IAU name of the object
11 A1 --- n_IAU [ *?!] A flag for classification
12- 29 A18 --- Name *Alternative name from VV93 <VII/166>
31- 32 I2 h RAh Right ascension J2000 (hours)
34- 35 I2 min RAm Right ascension J2000 (minutes)
37- 40 F4.1 s RAs Right ascension J2000 (seconds)
42 A1 --- DE- Declination sign
43- 44 I2 deg DEd Declination J2000 (degrees)
46- 47 I2 arcmin DEm Declination J2000 (')
49- 50 I2 arcsec DEs Declination J2000 (")
52- 56 F5.3 --- z *[]? Redshift
58- 62 F5.2 mag Vmag *[]? Magnitude from VV93 <VII/166>
64- 69 F6.3 Jy F6cm []? 6cm radio flux density
71- 75 F5.2 --- alpha_r []? Radio spectral index
77- 82 F6.2 10-12mW/m2 Fx [] Unabsorbed X-ray flux density
84- 88 F5.2 10-12mW/m2 e_Fx *[] Error of X-ray flux density
90- 93 F4.2 --- Gamma *[]? X-ray spectral photon index
95- 98 F4.2 --- E_Gamma *[]? Positive error of photon index
100-103 F4.2 --- e_Gamma *[]? Negative error of photon index
105-106 A2 --- Com *[SP ] Notes on the X-ray detection
108-109 A2 --- Ref *? Reference for the quoted spectral index
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Note on Name:
A '*' denotes a radio-quiet object; a '?' mark indicates that
no 5GHz flux is available; and a '!' means that the X-ray flux
is probably corrupted by another source.
Note on z:
A '0' as the 3rd decimal is mostly an artifact of the machine
readable form of the catalogue. See the printed version of VV93 <VII/166>
for the appropriate values.
Note on Vmag and e_Fx:
One sigma statistical errors from count rates only
Note on Gamma:
Spectral photon index in the ROSAT energy band for a power law
fit (S=C*E**(-Gamma)) with Galactic absorption
Note on E_Gamma and e_Gamma:
One sigma errors. If no error is given, the value of the error
is unphysically large.
Note on Com:
S: detected in RASS; P: detected in Pointed observations
Note on Ref:
BP: Buehler P., et al. (1995A&A...295..309B)
BH: Brunner H., et al. (1994A&A...287..436B)
BW: Brinkmann W. & Siebert J. (1995A&A...300L..33B)
EM: Elvis M., et al. (1994ApJ...422...60E)
LA: Laor A., et al. (1994ApJ...435..611L)
NM: Neumann M., et al. <J/A+AS/106/303>
SN: Schartel N., et al. (1996A&A...307...33)
SJ: Siebert J., et al., (1996A&A...307....8S)
ZY: Zhang Y.F. & Marscher A.P., 1994 AIP Conf. Proc. 313, p.406
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Acknowledgements: Weimin Yuan <wey@ipp-garching.mpg.de>
References:
Brinkmann W, Siebert J., 1995, A&A, 300, L33 =1995A&A...300L..33B
Brunner H. et al., 1994, A&A 287, 436 =1994A&A...287..436B
Buehler P. et al., 1995, A&A 295, 309 =1995A&A...295..309B
Elvis M. et al., 1994, ApJ 422, 60 =1994ApJ...422...60E
Laor A. et al., 1994, ApJ 435, 611 =1994ApJ...435..611L
Neumann M. et al., 1994, A&AS 106, 303 =Cat. <J/A+AS/106/303>
Schartel N. et al., 1996, A&A 307, 33 =1996A&A...307...33
Siebert J. et al., 1996, A&A 307, 8 =1996A&A...307....8S
Veron-Cetty, M.-P. & Veron, P., 1993 (VV93) =Catalogue <VII/166>
Voges W., 1992, In: Proc. of the ISY Conference ''Space Science'',
ESA ISY-3, ESA Publications, p.9 (See catalogue <IX/10>)
Voges W., et al., 1995, ROSAT NEWS No. 32 =Catalogue <IX/11>
Zhang Y. F., Marscher A. P., 1994, AIP Conf. Proc. 313, p.406
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(End) Patricia Bauer [CDS] 27-Sep-1996