Identification of Radio Sources Between Declinations +27° and ?30°

Abstract

SummarySeventy-four identifications have been made from inspection of the 48 in. Sky Survey prints in positions of 150 sources measured with the 210 ft telescope. Thirty-seven of the identified sources are galaxies and 37 possible quasi-stellar objects. In 26 cases previously suggested identifications are confirmed. Finding charts are given for the remainder.

Some Identifications for Weak Sources in the Parkes Catalogue for Declinations +20° to ?20°

“…These observations were made at intervals of about Ii hr throughout the observing period. Pointing corrections were determined in the manner described by Merkelijn (1969) and Wills and Bolton (1969) and applied to the measured positions.. The accuracy of the present measurements is believed to be similar to that of the measurements of Merkelijn and of Wills and Bolton.…”

“…More accurate positions for the sources between declinations +4 0 and _4 0 are contained in the Parkes 2700 MHz catalogue for this zone (Wall, Shimmins, and Merkelijn 1971). Some of the weakersourc6:3 for which possible identifications had been suggested were measured by Bolton, Shimmins, and Merkelijn (1968), and many of the weaker sources between declinations +4 0 and +20 0 which are common to the 4C catalogue were reported by Wills and Bolton (1969). Finally, Merkelijn (1969) has determined accurate positions for all the weaker sources where galaxies had been noted on the Palomar Sky Survey prints within a few minutes of arc of their catalogue positions.…”

“…More accurate positions and flux densities at 2700 MHz have since been determined for most ofthese sources. Measurements of all the sources with flux densities greater than 1•0 f.u.t at 2700 MHz were reported by Shimmins, Clarke, and Ekers (1966) and a further set of positions was given by Shimmins (1968). More accurate positions for the sources between declinations +4 0 and _4 0 are contained in the Parkes 2700 MHz catalogue for this zone (Wall, Shimmins, and Merkelijn 1971).…”

Identification of a new low-redshift GHz-peaked spectrum radio source and implications for the GHz-peaked spectrum class

“… Key to references: Be68 =de La Beaujardière et al (1968), Bo73 =Bolton & Shimmins (1973), Co98 =Condon et al (1998), C007 = the ATCA calibrator survey (http://www.narrabri.atnf.csiro.au/calibrators/), Di77 =Disney & Wall (1977), Du93 =Duncan et al (1993), Ek89 =Ekers et al (1989), Ha75 =Haynes, Huchtmeier & Siegman (1975), La81 =Large et al (1981), Le71 =Lequeux (1971), Lo97 =Lovell (1997), Ma03 =Mauch et al (2003), Sa84 =Sadler (1984), Sa89 =Sadler, Jenkins & Kotanyi (1989), Sl94 =Slee et al (1994), Ta03 =Taylor (2003), TET = this paper (observations made 2003 March 9), Ti03 =Tingay et al (2003), Wr90 =Wright & Otrupcek (1990), Wr91 =Wright et al (1991), Wr96 =Wright et al (1996). …”

Accurate Positions and Identifications of 75 Radio Sources Between Declinations +20º and +27º

“…INTRODUCTION Bolton, Shimmins, and Merkelijn (1968) and have recently reported a number of identifications using transit positions of sources from the +20 0 to +27 0 Parkes catalogue (Shimmins and Day 1968). Additional accurate position measurements have now been made of the remainder of the catalogue sources in this region for which identifications appeared likely on the basis of their catalogue positions.…”