Query : 2001A&A...368..471H

2001A&A...368..471H - Astronomy and Astrophysics, volume 368, 471-483 (2001/3-3)

The circumstellar structure of the Be shell star φ Persei. II. Modeling.


Abstract (from CDS):

We model FeII 5317 emission lines and phase resolved HeI 6678 and 5876 emission lines of the bright B2e&sdO shell binary φ Per to find the size and shape of the excitation region inside the circumprimary disk. We find the FeII 5317 emission to originate within 9 stellar radii in an axisymmetric disk around the primary. Orbital phase variations of HeI 6678 are fit in terms of a disk sector with disk radius of 10 stellar radii and opening angle of ≃120° facing the secondary. This region can be alternatively described by an intersection of a sphere around the secondary and the circumprimary disk with a penetration depth of about 7R*. Similar fit values are found for HeI 5876. The enigmatic orbital phase precedence of shell occurrence in the HeI emission features is discussed. We favor a model in which the inner HeI shell is deformed because of differential rotation in combination with a finite recombination time.

Abstract Copyright:

Journal keyword(s): line: formation, profiles stars: circumstellar matter, emission-line, Be, binaries, spectroscopic

Errata: erratum vol. 405, p. 227 (2003)

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 * phi Per Be* 01 43 39.6379209 +50 41 19.432832 3.10 4.02 4.06 3.90 3.88 B1.5V:e-shell 567 0
2 * f01 Cyg Be* 20 59 49.5541247496 +47 31 15.363746436 3.77 4.71 4.75 4.62 4.63 B1.5Vnne 494 0

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