Mg II resonance line emission at 2800 A in stars with different rotational velocities and different metal abundances

Journal Article · Thu Jul 15 00:00:00 EDT 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/160113· OSTI ID:6577102

Boehm-Vitense, E

We have studied Mg II k line (2795.7 A) emission fluxes in stars of different effective temperatures, gravities, rotational velocities, and metal abundances. We find that stars with variable radial velocities show enhanced fluxes, while rapidly rotating F stars show reduced fluxes as compared to slowly rotating stars. We find a reduction of k emission for metal deficient stars which is nearly independent of the deficiency factor, except for extremely low abundances. We discuss the implication for the heating of the chromospheres.

• Research Organization: University of Washington, Seattle
• OSTI ID: 6577102
• Journal Information: Astrophys. J.; (United States), Vol. 258:2
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GIANT STARS
CHEMICAL COMPOSITION
EMISSION SPECTRA
ROTATION
MAIN SEQUENCE STARS
ABUNDANCE
MAGNESIUM IONS
MAGNETIC FIELDS
RADIAL VELOCITY
RADIATION FLUX
STELLAR ATMOSPHERES
ULTRAVIOLET SPECTRA
VARIABLE STARS
ATMOSPHERES
CHARGED PARTICLES
IONS
MOTION
SPECTRA
STARS
VELOCITY
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources