Short-term variability of gamma-2 Velorum

Details Short-term variability of gamma-2 Velorum Short-term variability of gamma-2 Velorum

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...200..128b&link_type=abstract

Astrophysical Journal, vol. 200, Aug. 15, 1975, pt. 1, p. 128-132.

Astronomy and Astrophysics

Astrophysics

7

Emission Spectra, Hot Stars, Stellar Luminosity, Stellar Spectrophotometry, Variable Stars, Diurnal Variations, Electrophotometry, Helium Ions, Line Spectra, Power Spectra, Spectral Line Width

Scientific paper

Photoelectric spectrum scans of gamma-2 Velorum in the spectral range 4600-4720 A were analyzed to study the short-term variability of brightness and of emission line strengths. The emission strengths of He II (4686 A) and C III-IV (4650 A) show rms variations of 3 and 2 per cent, respectively. These variations have time scales of 1 minute and longer. Night-to-night variations were also found. The continuum radiation also shows small-amplitude variations. No periodic variations attributable to this star were detected on any of the nights on which these observations were made.

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