Chromospheric CA II H and K and H-alpha emission in single and binary stars of spectral types F6-M2

• DOI: 10.1086/191414
• Publication Date: 2002-07-26T18:12:57Z
• Authors: Klaus G. Strassmeier; Francis C. Fekel; Bernard W. Bopp; Robert C. Dempsey; Gregory W. Henry
• Keywords: Balmer series; Stellar rotation; Chromosphere; Rotation period; Flare star; K-line

view Abstract Citations (224) References (59) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Chromospheric CA II H and K alpha Emission in Single Binary Stars of Spectra Types F6--M2 Strassmeier, Klaus G. ; Fekel, Francis C. Bopp, Bernard W. Dempsey, Robert Henry, Gregory New observations the Ca H-epsilon region and/or Balmer H-alpha line are presented for 100 mostly very active stars but also weak or inactive with suspected activity. Correlations between chromospheric activity at effective surface temperature rotation identified, several new emission discovered. No single activity-rotation relation can be derived all luminosity classes, there is clear evidence that evolved generally more than main-sequence same period. within appears to play no role, while binary show higher levels their counterparts. lines depends on flux declines cooler temperature. Publication: The Astrophysical Journal Supplement Series Pub Date: January 1990 DOI: 10.1086/191414 Bibcode: 1990ApJS...72..191S Keywords: Chromosphere; Spectra; Late Stars; Stellar Activity; Rotation; Calcium; Alpha Line; Hydrogen; Potassium; Spectral Resolution; Astrophysics; EMISSION; LINE PROFILES; STARS: BINARIES; CHROMOSPHERES; EMISSION-LINE; LATE-TYPE; ROTATION full text sources ADS | data products SIMBAD (129)