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J/A+A/392/851           QSOs in the M3 field                  (Meusinger+, 2002)

QSOs from the variability and proper motion survey in the M3 field. Meusinger H., Scholz R.-D., Irwin M., Lehmann H. <Astron. Astrophys. 392, 851 (2002)> =2002A&A...392..851M
ADC_Keywords: Active gal. nuclei ; Galaxies, Seyfert ; QSOs ; Photometry, UBV ; Redshifts Keywords: galaxies: active - galaxies: Seyfert - galaxies: statistics - quasars: general Abstract: We present results from a variability and proper motion (VPM) search for QSOs in the field around M3. The VPM search is demonstrated to be powerful technique for efficiently finding QSOs without major selection effects with regard to the spectral energy distribution. Remarkably, the properties of the VPM QSOs do not significantly differ from those of samples from more conventional optical search techniques. The lightcurves of the QSOs from the resulting sample provide an interesting data set for the statistical investigation of QSO long-term variability. Description: Two lists are presented for altogether 181 QSOs/Sey1s/NELGs in a field of about 10 square degrees centered on the globular cluster M3. All listed objects were unambiguously identified with starlike sources from a variability and proper motion (VPM) study based on a large number of digitised plates from the Tautenburg Schmidt telescope with a time-baseline of three decades. The first list summarises the data for 74 QSOs/Sey1s and 3 Narow Emission Line Galaxies (NELGs) with redshifts from spectroscopic follow-up observations with CAFOS at the 2.2m telescope of the DSAZ on Calar Alto, Spain. The data for the remaining sources, with redshifts taken from the NED, are given in the second table. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 96 77 QSOs/Sey1s/NELGs from follow-up spectroscopy of VPM sources table4.dat 96 104 QSOs/Sey1s/NELGs from the NED
Byte-by-byte Description of file: table3.dat table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Running number 6- 7 I2 h RAh Right ascension (J2000.0) 9- 10 I2 min RAm Right ascension (J2000.0) 12- 16 F5.2 s RAs Right ascension (J2000.0) 19- 20 I2 deg DEd Declination (J2000.0) 22- 23 I2 arcmin DEm Declination (J2000.0) 25- 28 F4.1 arcsec DEs Declination (J2000.0) 32- 36 F5.3 --- z Redshift 37 A1 --- u_z Uncertainty flag on z 40 I1 --- Run ? Observing run for follow-up spectroscopy, in table3.dat only 44- 49 F6.2 mag BMAG Absolute B magnitude 51- 54 A4 --- Type Object type 57- 61 F5.2 mag Bmag Apparent B magnitude 64- 68 F5.2 mag U-B ? Colour index U-B (1) 71- 75 F5.2 mag B-V ? Colour index B-V (2) 79- 82 F4.2 --- Ipm Proper motion index (3) 85- 88 F4.2 --- Ivar Overall variability index (4) 92- 96 F5.2 --- Iltvar ? Long-term variability index (5)
Note (1): U magnitude not available for line 28 in table3.dat Note (2): V magnitude not available for line 1 in table4.dat Note (3): The proper motion index is the probability of an object to have a non-zero proper motion, and is expressed by the measured proper motion in units of the proper motion error (Ipm=pm/e_pm). (Brunzendorf & Meusinger, 2001A&A...373...38B) Note (4): The overall variability index is assessed by the deviation of the individual magnitudes about the mean magnitude, and is normalised by the average magnitude scatter for star-like objects in the same magnitude range. Note (5): The long-term variability index is defined by means of structure function analysis. Iltvar not available for lines 15 and 28 in table3.dat Iltvar has been computed only for B<20 and Ipm<4 and is therefore not available for several objects in table4.dat
Acknowledgements: Helmut Meusinger
(End) Helmut Meusinger [TLS Tautenburg, Germany] 05-Jul-2002
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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