Title: Fluorescence-induced chromospheric H-alpha emission from the K dwarf component of V471 Tauri. I - The 1983 epoch
Abstract: view Abstract Citations (28) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Fluorescence-induced Chromospheric H alpha Emission from the K Dwarf Component of V471 Tauri. I. The 1983 Epoch Young, Arthur ; Skumanich, Andrew ; Paylor, Victoria Abstract The authors present time-resolved CCD spectroscopic observations of the Hα region of V471 Tau covering all phases of the orbit, extending over six consecutive nights (12 orbital cycles) and including simultaneous broadband continuum photometry. The time-dependent profile of the Hα feature changes from a definitive absorption line to a moderately strong emission line systematically with phase, reaching maximum emission strength at the phase of secondary eclipse. This suggests that the inner hemisphere of the chromosphere of the K dwarf component is fluorescing in response to the incident ultraviolet radiation field from the hot white dwarf primary star. The data show also evidence of an active magnetic region on the K dwarf. Publication: The Astrophysical Journal Pub Date: November 1988 DOI: 10.1086/166844 Bibcode: 1988ApJ...334..397Y Keywords: Dwarf Stars; Eclipsing Binary Stars; H Alpha Line; K Stars; Late Stars; T Tauri Stars; Astronomical Photometry; Charge Coupled Devices; Chromosphere; Radiation Distribution; Time Dependence; Astronomy; RADIATION MECHANISMS; STARS: CHROMOSPHERES; STARS: ECLIPSING BINARIES; STARS: INDIVIDUAL CONSTELLATION NAME: V471 TAURI; STARS: LATE-TYPE full text sources ADS | data products SIMBAD (1)