Abstract
view Abstract Citations (22) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Hydrogen and Ca II emission during the February 1978 radio outburst of HR 1099. Popper, D. M. Abstract The intensities of emission lines Ha, He, and H and K of Ca II in the spectrum of HR 1099 are evaluated at one time during the radio outburst of February 1978. The energy in Ha at this time was roughly a factor of 2 greater than at times before the outburst, while the ratio for He was a very uncertain factor of 10 greater than at a single epoch a year earlier. The increase in Ca ii emission was 40%. On the basis of limited data for HR 1099 and UX Ari, the Ca ii emission (at least) does not appear confined to a heavily spotted hemisphere, called upon to explain some phenomena in these and other systems. Publication: The Astronomical Journal Pub Date: December 1978 DOI: 10.1086/112356 Bibcode: 1978AJ.....83.1522P Keywords: Binary Stars; Calcium; H Lines; K Lines; Radio Bursts; Radio Stars; Stellar Spectra; H Alpha Line; Radiant Flux Density; Astrophysics; Emission Lines:RS CVn Binaries; H Alpha:RS CVn Binaries full text sources ADS | data products SIMBAD (2)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
