Rapid photometry of EZ Canis Majoris - Searching for flare activity in Wolf-Rayet stars

Details Rapid photometry of EZ Canis Majoris - Searching for flare activity in Wolf-Rayet stars Rapid photometry of EZ Canis Majoris - Searching for flare activity in Wolf-Rayet stars

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...266..409m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 266, no. 1, p. 409-415.

Astronomy and Astrophysics

Astrophysics

9

Stellar Flares, Stellar Spectrophotometry, Wolf-Rayet Stars, Fourier Analysis, Light Curve, Stellar Magnetic Fields, Stellar Radiation

Scientific paper

EZ CMa was chosen for a trial run of high-speed photometry to search for flare activity in W-R stars. Data were collected during UT November 27-December 2, 1991 with the 1.0-telescope + ASCAP photometer and the 0.6-m telescope + manual photometer of the Cerro Tololo Inter-American Observatory. A period near 22.7 min was found. A brightness increase of about 1 percent, lasting for about 10 min in the otherwise smooth light curve, was observed. Fourier analysis of the data sets an upper limit of 0.0005 mag on any variations with periods less than about 10 min.

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