Other
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7741s&link_type=abstract
HST Proposal ID #7741
Other
Hst Proposal Id #7741 Cool Stars
Scientific paper
71 Tau is the second most powerful X-ray source in the Hyades Cluster, yet its UV chromospheric emission lines appear comparatively weak in low dispersion IUE spectra. 71 Tau shows puzzling photometric changes in the UV, varying in brightness on at least one occasion by as much as 30% in IUE spectra near 1800--2000 Angstrom. Its behavior suggests a possible, new mode of A--F star variability. There is some evidence to suggest that many other A and F stars may behave the same way, fluctuating by small amounts in UV brightness and changing their effective temperatures by no more than 50- -100 K. Relying on the greater sensitivity and inherent stability of the STIS, we propose to use this instrument to obtain a spectroscopic light curve of 71 Tau over the 1200-- 3100 Angstrom region. From this time series of STIS spectra, we will try to demonstrate whether and in what manner the UV brightness of 71 Tau varies, in order to determine whether such brightness changes can be reconciled with radial or non- radial pulsations of the star.
No associations
LandOfFree
A Hyades Enigma: 71 Tauri 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 A Hyades Enigma: 71 Tauri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Hyades Enigma: 71 Tauri will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-896204