SIMBAD references

2011MNRAS.414.2528P - Mon. Not. R. Astron. Soc., 414, 2528-2539 (2011/July-1)

The LBA calibrator survey of southern compact extragalactic radio sources – LCS1.


Abstract (from CDS):

We present a catalogue of accurate positions and correlated flux densities for 410 flat-spectrum, compact extragalactic radio sources previously detected in the Australia Telescope 20 GHz (AT20G) survey. The catalogue spans the declination range [-90°, -40°] and was constructed from four 24-h very long baseline interferometry (VLBI) observing sessions with the Australian Long Baseline Array at 8.3 GHz. The VLBI detection rate in these experiments is 97 per cent, the median uncertainty of the source positions is 2.6 mas and the median correlated flux density on projected baselines longer than 1000 km is 0.14 Jy. The goals of this work are (1) to provide a pool of southern sources with positions accurate to a few milliarcsec, which can be used for phase-referencing observations, geodetic VLBI and space navigation; (2) to extend the complete flux-limited sample of compact extragalactic sources to the Southern hemisphere; and (3) to investigate the parsec-scale properties of high-frequency selected sources from the AT20G survey. As a result of this VLBI campaign, the number of compact radio sources south of declination -40° which have measured VLBI correlated flux densities and positions known to milliarcsec accuracy has increased by a factor of 3.5. The catalogue and supporting material is available at.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): instrumentation: interferometers - catalogues - surveys - astrometry

VizieR on-line data: <Available at CDS (J/MNRAS/414/2528): table3.dat table5.dat table6.dat>

Nomenclature: Table 6: LCS1 JHHMM+DDMM N=410.

Simbad objects: 412

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