Annual linear polarization measurements of 8 bright Be stars covering the years from 1984 to 1998 are now freely available in an online catalog from the ADC (Astronomical Data Center at NASA's Goddard Space Flight Center) or the CDS (Strasbourg astronomical Data Center at the Strasbourg Astronomical Observatory). The program stars are gamma Cas, phi Per, 48 Per, zeta Tau, 48 Lib, chi Oph, pi Aqr, and omicron And, supplemented by the polarized standard stars 2H Cam and omicron Sco. Observations were made in the Johnson-Cousins UBVRI filter system using the Breger polarimeter on the 0.9-m telescope at McDonald Observatory (1984-1993) and the AnyPol polarimeter on the 0.4-m telescope at Limber Observatory (1994-1998) in an ongoing project designed to document the long-term variability which is an outstanding characteristic of the Be phenomenon. Representative error estimates are on the order of 0.05 percent in the degree of polarization and 2 degrees in the position angle. Researchers in this field, especially spectroscopists with an interest in correlations between polarization and line-profile variability, are welcome to make independent use of these data. The catalog URLs are http://adc.gsfc.nasa.gov/adc-cgi/cat.pl?/catalogs/2/2220/ (ADC) and http://vizier.u-strasbg.fr/viz-bin/Cat?II/220 (CDS).
American Astronomical Society Meeting Abstracts
- Pub Date:
- December 1999