First results from the ESO VLTI Calibrators Program

Details First results from the ESO VLTI Calibrators Program First results from the ESO VLTI Calibrators Program

2005-01-25

arxiv.org/abs/astro-ph/0501532v1

Astronomy and Astrophysics

Astrophysics

10 pages, 11 figures, 4 tables (some tables only available in electronic form at the CDS), accepted for publication by Astrono

Scientific paper

10.1051/0004-6361:20042257

The ESO Very Large Telescope Interferometer (VLTI) is one of the leading interferometric facilities. It is equipped with several 8.2 and 1.8m telescopes, a large number of baselines up to 200m, and with several subsystems designed to enable high quality measurements and to improve significantly the limits of sensitivities currently available to long-baseline interferometry. The full scientific potential of the VLTI can be exploited only if a consistent set of good quality calibrators is available. For this, a large number of observations of potential calibrators have been obtained during the commissioning phase of the VLTI. These data are publicly available. We briefly describe the interferometer, the VINCI instrument used for the observations, the data flow from acquisition to processed results, and we present and comment on the volume of observations gathered and scrutinized. The result is a list of 191 calibrator candidates, for which a total of 12066 observations can be deemed of satisfactory quality. We present a general statistical analysis of this sample, using as a starting point the angular diameters previously available in the literature.We derive the general characteristics of the VLTI transfer function, and its trend with time in the period 2001 through mid-2004. A second paper will be devoted to a detailed investigation of a selected sample, aimed at establishing a VLTI-based homogeneous system of calibrators.

Affiliated with

Also associated with

No associations

Rating

First results from the ESO VLTI Calibrators Program does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with First results from the ESO VLTI Calibrators Program, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First results from the ESO VLTI Calibrators Program will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-512851