ON THE REALITY OF THE SPECTROSCOPIC ORBIT FOR R AQUARII

ON THE REALITY OF THE SPECTROSCOPIC ORBIT FOR R AQUARII

New velocities for the emission lines in R Aqr show that the system has not followed the orbit with a period of 26.7 years tentatively suggested by Merrill. The binary nature of the star and its enormous mass function of 16.5 M⨀ are probably unreal. Evidence for mass loss with ionization and velocit...

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Veröffentlicht in:Publ. Astron. Soc. Pac., v. 87, no. 516, pp. 269-271 v. 87, no. 516, pp. 269-271, 1975-04, Vol.87 (516), p.269-271
Hauptverfasser: JACOBSEN, THEODOR S., WALLERSTEIN, GEORGE
Format: Artikel
Sprache:eng
Schlagworte:
Astronomical objects
BINARY STARS
Emission spectra
HELIUM IONS
IONIZATION
IRON IONS
Long period variables
MASS TRANSFER
Mathematical minima
N56200 -Physics (Astrophysics & Cosmology)-Stars
NEON IONS
Orbital motion
Orbital velocity
ORBITS
OXYGEN IONS
Spectrograms
SPECTROSCOPY
SULFUR IONS
VARIABLE STARS- EMISSION SPECTRA
VELOCITY
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Zusammenfassung:New velocities for the emission lines in R Aqr show that the system has not followed the orbit with a period of 26.7 years tentatively suggested by Merrill. The binary nature of the star and its enormous mass function of 16.5 M⨀ are probably unreal. Evidence for mass loss with ionization and velocity increasing outward is presented.
ISSN:0004-6280
1538-3873
DOI:10.1086/129754