EDP Sciences
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Volume 376, Number 3, September IV 2001
Page(s) 1123 - 1125
Section Instruments, observational techniques and data processing
DOI http://dx.doi.org/10.1051/0004-6361:20010975

A&A 376, 1123-1125 (2001)
DOI: 10.1051/0004-6361:20010975

Pointing sources for southern submm telescopes

A. Adraou1, R. Chini1, M. Albrecht1, R. Lemke1, P. A. Shaver2, L.-Å. Nyman3 and R. S. Booth4

1  Astronomisches Institut der Ruhr-Universität Bochum, Universitätsstrasse 159/NA 7, 44780 Bochum, Germany
2  European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
3  Swedish-ESO Submillimetre Telescope, European Southern Observatory, Casilla 16001, Santiago 19, Chile
4  Onsala Space Observatory, 439 92 Onsala, Sweden

(Received 23 April 2001 / Accepted 13 June 2001)

We present the results of a 230 GHz survey of quasars and BL Lacertae objects performed with the SEST. The sample consists of objects with flat radio spectra and is taken from various radio surveys. Repeated observations for individual sources indicates variability by factors of 2-5 within a single night. Comparing measurements over longer periods, even changes by factors of 10-25 at 230 GHz have been observed. The present catalog contains the 130 brightest objects whose 230 GHz flux densities are above 500 mJy most of the time. This, and their declination below $+20^\circ$, makes them useful candidates for future pointing sources at southern submillimeter telescopes. First measurements of flux densities at 345 GHz are given for six objects.

Key words: galaxies: active -- BL Lacertae objects: general -- quasars: general -- radio continuum: general -- galaxies

Offprint request: A. Adraou, adraou@astro.ruhr-uni-bochum.de

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