Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...219..947l&link_type=abstract
Astrophysical Journal, Part 1, vol. 219, Feb. 1, 1978, p. 947-951.
Astronomy and Astrophysics
Astrophysics
15
Cepheid Variables, Light Curve, Oao 2, Stellar Spectrophotometry, Ultraviolet Photometry, Amplitudes, Ephemerides, Radial Velocity, Secular Variations
Scientific paper
Photometric data from the Wisconsin Experiment Package on OAO-2 have been used to construct light curves at three ultraviolet wavelengths for Alpha Lup and at seven wavelengths for BW Vul. Both stars are well-known variables of the Beta Cephei (Beta Canis Majoris) type. The light curves for Alpha Lup are in good agreement with the radial-velocity period. A temperature variation of 400-500 K is derived. The BW Vul light curves confirm recent ephemerides based on a secularly varying period and show a stillstand near light maximum at some wavelengths. Both stars exhibit increasing light amplitude at the shortest ultraviolet wavelengths. There is little evidence for cycle-to-cycle variations on a time scale of the order of 1 day.
No associations
LandOfFree
Ultraviolet photometry from the Orbiting Astronomical Observatory. XXVIII - Ultraviolet light curves for Alpha LUPI and BW Vulpeculae 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 Ultraviolet photometry from the Orbiting Astronomical Observatory. XXVIII - Ultraviolet light curves for Alpha LUPI and BW Vulpeculae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraviolet photometry from the Orbiting Astronomical Observatory. XXVIII - Ultraviolet light curves for Alpha LUPI and BW Vulpeculae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1034211