... We present a catalogue of 782 compact radio sources in the declination range 0 o < Delta(B1950) < +20 o whose positions have been measured to an rms accuracy of about 14~mas with the VLA. These sources are primarily intended for use as phase calibration sources for the Jodrell Bank MERLIN. ... Col 1. Source name derived from B1950 coordinates. ... Source name derived from J2000 coordinates. ... Total flux density in mJy at 8.4~GHz. ... Comments about the source, mainly regarding structure. ...

... Previous: Multi-threaded Query Agent and Engine for a Very Large Astronomical Database . ... Dedicated tools have been developed at CDS in order to face the challenge of fast on-line access to very large astronomical catalogues. ... When a query to such a large catalogue is submitted to VizieR , the CDS database of catalogues and tables (Ochsenbein et al. 2000), a dedicated program handles the request, extracts and decodes the matching data, and sends its output back to VizieR. ... 1990, Russel et...

... 7C(G) catalogue -------------------------------------------------------------------------------- See also: J/A+AS/110/419 : 7C: 151MHz survey of region RA=17h, DE=+65deg (Visser+, 1995) J/MNRAS/282/779 : 7C: 151MHz survey of region 9-16h 20-35deg (Waldram+ 1996) J/MNRAS/298/637 : 7C: 151MHz survey of 3 regions (Pooley+, 1998) Byte-by-byte Description of file: catalog.dat ---------------------------------------------------- ...

... In this work, we investigate some a new possibility to estimate correlations between radio source position catalogs (RSC). ... Catalogs AUS AUS AUS AUS AUS AUS BKG BKG BKG BKG BKG GSF GSF GSF BKG GSF IAA MAO OPA USN GSF IAA MAO OPA USN IAA MAO OPA USN MAO OPA USN OPA USN GSF IAA IAA IAA MAO With correlations, the system to be solve consists of the equations: The key point is to obtain a reliable estimates of ij. ...

Position Switching Separation Tolerance with Arecibo in L-Band Travis McIntyre The University of New Mexico July 2010 Revised December 2013 Abstract The blocked telescope aperture at Arecibo creates standing waves in the bandpass around 1MHz. ... Test observations with Arecibo in L-Band show that position switching effectively removes standing waves for separations of one half FWHM or less. Standing waves remain for separations of one FWHM, increasing the rms of the baseline by 20%. ...

... The overall globular cluster population is divided by gap in the metallicity function at [Fe/H]=-1.0 into two discrete groups with well-defined maxima at [Fe/H]=-1.60?0.03 dex, and -0.60?0.04 dex. ... Clusters with extremely blue horizontal branches occupy a spherical volume of radius ~ 9 kpc, have high rotational velocities ( V rot =77?33 km/s), have substantial and equal negative radial and vertical metallicity gradients, and are, on average, the oldest group (the old-halo subsystem). ...

... casa::RegexBase . ... find (const Char *s, String::size_type len, Int &matchlen, String::size_type pos=0) const =0 . ... match (const Char *s, String::size_type len, String::size_type pos=0) const . ... rfind (const Char *s, String::size_type len, Int &matchlen, String::size_type pos= String::npos ) const . ... search (const Char *s, String::size_type len, Int &matchlen, Int pos=0) const . ... String::size_type find(const Char *s, String::size_type len, Int &matchlen, String::size_type pos=0) const;...

We investigate models for main-sequence and horizontal-branch (HB) stars constructed using the Carson opacities and make comparisons with models based on the Cox-Stewart opacities. ... The drop in the hydrogen-shell luminosity due to the helium-core expansion during HB evolution is greater than that obtained with the Cox-Stewart opacities. ... Studies of main-sequence (MS) stars lead to agreement with Stothers' (1974a,b, 1976) results for homogeneous models constructed with Carson opacities. ...

Modern requirements stipulated for the Networking Technologies . Brief Review of the problems under solution. ... Distributed Collapsed Back Bone Technology Advantages and shortcomings of different approaches. Switches against routers. ... Position at the IS market. Position of the modern high-speed technologies. ... Review of switching technology. Review of the switch market.Classification of switches. ... Big corporate networks implementing switching and routing technologies. ...

... Archives . ... ArXiv] 1st week, Dec. ... The full article is found from [arXiv/astro-ph:0712.1037] . According to J. P. Dietrich , the positional citation effect (PCE) is significant so that preprints appeared at the top of daily lists tend to be more cited than other preprints. ... Tags: astro-ph , citation , positional citation effect . ... Check [astro-ph:0805.0307] Disentangling Visibility and Self-Promotion Bias in the arXiv:astro-ph Positional Citation Effect 05-05-2008, 9:52 pm . ...