J/A+AS/111/169 UV-excess quasar candidates (Moreau+, 1995) ================================================================================ Systematic search for UV-excess quasar candidates in 40 square degrees at the North Galactic Pole Moreau O., Reboul H. =1995A&AS..111..169M ================================================================================ 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: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 80 75 UVX objects already spectroscopically identified (table 7 of paper) table2.dat 80 3 White-dwarf candidates (from table 8 of paper) table3.dat 80 1681 Quasar-candidate catalogue (section 6 of paper) table7.dat 75 75 Objects already spectroscopically identified -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat table2.dat table3.dat table7.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 I6 --- OMHR Detection number 9- 25 A17 --- Name Identification 27- 28 I2 h RAh Right ascension J2000 30- 31 I2 min RAm Right ascension J2000 33- 37 F5.2 s RAs Right ascension J2000 39 A1 --- DE- Declination sign 40- 41 I2 deg DEd Declination J2000 43- 44 I2 arcmin DEm Declination J2000 46- 49 F4.1 arcsec DEs Declination J2000 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) -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 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. ================================================================================ (End) Patricia Bauer [CDS] 16-Jan-1995