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J/A+AS/111/169 UV-excess quasar candidates (Moreau+, 1995)
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Systematic search for UV-excess quasar candidates in 40 square degrees at
the North Galactic Pole
Moreau O., Reboul H.
<Astron. Astrophys. Suppl. Ser. 111, 169 (1995)>
=1995A&AS..111..169M (SIMBAD/NED Reference)
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ADC_Keywords: QSOs; Galaxies, UV-excess; Plate data
Keywords: quasar: general - surveys - techniques: photometric - astrometry -
stars: population II - white dwarfs
Description:
We have developed a procedure (so called PAPA) for measurement of
magnitudes (about 0.1mag accurate) and positions (with accuracy better
than 0.5arcsec) of all the objects present on photographic plates
digitised with the MAMA machine. This homogeneous procedure was
applied to four Schmidt plates - in U, B and twice V - covering the
Palomar-Sky-Survey field PS +30deg 13h00m, a 40-square-degree zone at
the North Galactic Pole. A general-interest exhaustive tricolour
catalogue of 19542 star-like objects down to V=20.0 has been produced
and we selected 1681 quasar candidates on the basis of ultraviolet
excess and, when possible, absence of any measurable proper motion.
The astrometric and photometric catalogue of the candidates is given
in electronic form.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 80 75 UVX objects already spectroscopically
identified (table 7 of paper)
table2 80 3 White-dwarf candidates (from table 8 of paper)
table3 80 1681 Quasar-candidate catalogue (section 6 of paper)
table7 75 75 Objects already spectroscopically identified
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Byte-by-byte Description of file: table1 table2 table3 table7
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Bytes Format Units Label Explanations
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1- 6 I6 --- N Detection number
9- 25 A17 --- Name Identification
27- 28 I2 h RAh Right ascension 2000
30- 31 I2 min RAm Right ascension 2000
33- 37 F5.2 s RAs Right ascension 2000
39 A1 --- DE- Declination sign
40- 41 I2 deg DEd Declination 2000
43- 44 I2 arcmin DEm Declination 2000
46- 49 F4.1 arcsec DEs Declination 2000
52- 56 F5.2 mag Umag U magnitude
57 A1 --- u_Umag Uncertainty flag on Umag
59- 63 F5.2 mag Bmag []? B magnitude
64 A1 --- u_Bmag Uncertainty flag on Bmag
66- 70 F5.2 mag Vmag V magnitude
71 A1 --- u_Vmag Uncertainty flag on Vmag
72- 80 A9 --- Rem Remarks (1)
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Note (1): Symbols used in the tables: (section 6 of paper)
NPM a proper motion could have been measured, if any greater
than 0.07"/year
BG the local sky background has been flagged (section 4.3)
in U, B and/or V
NBQS not in the BQS though measured with B < 16 and U-B < -0.65
QSO quasar
Sy Seyfert galaxy
AG active galaxy
WD white dwarf
sd subdwarf (sdO for a subdwarf O, ...)
HBB B horizontal branch star
NHB a star which may be a HB or a normal one
PNN planetary nebula nucleus
em. emission line object
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Historical Notes:
* 16-Jan-1995: Received from A&A Editors (disquette)
* 01-Jun-1995: Installed on CDS FTP Anonymous facility
* 26-Oct-1995: Table 7 added.
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(End) Patricia Bauer [CDS] 16-Jan-1995