The extragalactic nature of the Lacertids

Details The extragalactic nature of the Lacertids The extragalactic nature of the Lacertids

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978pazh....4..118d&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 4, Mar. 1978, p. 118-120.) Soviet Astronomy Letters, vol. 4, Mar.-Apr. 1978, p. 62-64.

Astronomy and Astrophysics

Astronomy

Astronomical Photometry, Extragalactic Radio Sources, Quasars, Astrometry, Astronomical Photography, Celestial Reference Systems, Parallax, Reference Stars, Stellar Magnitude, Stellar Motions

Scientific paper

Measurements of proper motions on three pairs of plates differing in epoch by 20-30 yr show that, to within the errors, the parallactic motion of the reference stars relative to eight galaxies and to the radio object ON 325 is identical. Thus ON 325 is evidently extragalactic. The equatorial coordinates and photographic magnitude are estimated for this object and for ON 231, which occurs at the edge of the plates.

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