SIMBAD references

1995A&AS..111..169M - Astron. Astrophys., Suppl. Ser., 111, 169-182 (1995/May-2)

Systematic search for UV-excess quasar candidates in 40 square degrees at the North Galactic Pole.


Abstract (from CDS):

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. A first multi-object spectroscopy of a few candidates confirms validity of the selection.

Abstract Copyright:

Journal keyword(s): quasars: general - surveys - techniques: photometric - astrometry - stars: population II - white dwarfs

VizieR on-line data: <Available at CDS (J/A+AS/111/169): table1 table2 table3 table7>

Nomenclature: Table 3: OMHR NNNNNN = OMHR N=1681.

CDS comments: OMHR J125659.42+294360.0 is OMHR J125659.42+294400.0 in Simbad, OMHR J131938.02+305960.0 is OMHR J131938.02+310000.0 in Simbad.

Simbad objects: 1766

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