1999PASP..111..829S


Query : 1999PASP..111..829S

1999PASP..111..829S - Publ. Astron. Soc. Pac., 111, 829-839 (1999/July-0)

Intereclipse spectroscopic snapshot of ε Aurigae with the Hubble space telescope.

SHEFFER Y. and LAMBERT D.L.

Abstract (from CDS):

A single-epoch low-resolution Goddard High Resolution Spectrograph spectrum of the eclipsing binary ε Aurigae was obtained while the secondary was orbiting toward eclipse by the primary. The spectrum as recorded between 1175 and 1461 Å is rich with emission and absorption lines which include stellar and interstellar components. The emission-line profiles have the appearance of double-peaked emission with a stronger red component at a radial velocity of +108 km.s–1, an overlying unresolved absorption component at -20 km.s–1, and a weaker blue emission bump at ~-92 km.s–1. We compare these observational results with known orbital properties of the ε Aur binary system and propose that the emission originates at the inner radius of the disk surrounding the enigmatic secondary. We interpret the kinematic data as a possible means to uncover the underlying stellar masses, and we speculate about the binary's relationship to other ``high-mass'' models.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Eclipsing - stars: individual (ε Aurigae) - Techniques: Radial Velocities - Ultraviolet Emission

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 * phi Cas s*y 01 20 04.9164665856 +58 13 53.807643876 6.15 5.66 4.98 4.34 3.78 F0Ia 285 0
2 * eps Aur SB* 05 01 58.1343686760 +43 49 23.917115316 3.86 3.53 2.99 2.47 2.02 A9Ia 600 0
3 * alf Car * 06 23 57.10988 -52 41 44.3810 -0.49 -0.59 -0.74 -0.96 -1.13 A9II 461 1

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