2012A&A...539A.110M

Query : 2012A&A...539A.110M

2012A&A...539A.110M - Astronomy and Astrophysics, volume 539A110-110 (2012/3-1)

On the Eddington limit and Wolf-Rayet stars.

MAEDER A., GEORGY C., MEYNET G. and EKSTROEM S.

Abstract (from CDS):

We examine some properties of stars evolving close to the classical Eddington limit for electron-scattering opacity, when these stars maintain a chemically homogeneous structure as a result of mixing and/or mass loss.We consider analytical relations and models computed with the Geneva code.Homologous, chemically homogeneous stars evolving with a constant Eddington factor obey a relation of the form µ²M=const. This applies, for example, to Wolf-Rayet (WR) stars in stages without hydrogen. The value of the constant may depend on the metallicity, initial mass, evolutionary stage, and physical processes included in the considered homologous evolutionary sequence. An average value of the constant between 20 and 40 in solar units is consistent with the masses of Galactic WR stars.

Abstract Copyright: ∼

Journal keyword(s): stars: evolution - circumstellar matter - stars: mass-loss - stars: massive - stars: Wolf-Rayet

Simbad objects: 1

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Number of rows : 1

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	NAME Arches Cluster	Cl*	17 45 50.5	-28 49 28						~	792	0

Query : 2012A&A...539A.110M

Basic data :

NAME Arches Cluster -- Cluster of Stars
Other object types:	`X (2CXO,SWIFT,...)`, `Cl* (2013A&A,[BDB2003])`, `HII ([GSL2002])`, `IR ([NHS93])`
ICRS coord. (ep=J2000) :	`17 45 50.5 -28 49 28 [ ] D 2002ApJ...566..880G`
FK4 coord. (ep=B1950 eq=1950) :	`17 42 40.1 -28 48 19 [ ]`
Gal coord. (ep=J2000) :	`000.1207 +00.0168 [ ]`
Proper motions mas/yr :	`-0.80 -1.89 [0.032 0.021 0] C` `2022ApJ...939...68H`
Angular size (arcmin):	`0.38 0.38 90 (~) D` `2013A&A...560A..76M`

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`NAME Arches Cluster`	`GAL 000.12+00.02`	`[BDB2003] G000.12+00.01`
`2CXO J174550.4-284919`	`SWIFT J174550.3-284920`	`[GSL2002] 61`
`GAL 000.121+00.017`	`3XMM J174550.4-284919`	`[NHS93] 17`

References (792 between 1850 and 2026) (Total 792)
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