2003A&A...404.1099D

Query : 2003A&A...404.1099D

2003A&A...404.1099D - Astronomy and Astrophysics, volume 404, 1099-1106 (2003/6-4)

On the influence of Stark broadening on Si I lines in stellar atmospheres.

DIMITRIJEVIC M.S., RYABCHIKOVA T., POPOVIC L.C., SHULYAK D. and TSYMBAL V.

Abstract (from CDS):

We study the influence of Stark broadening and stratification effects on Sii lines in the rapidly oscillating (roAp) star 10 Aql, where the Sii6142.48Å and 6155.13Å lines are asymmetrical and shifted. First we have calculated Stark broadening parameters using the semiclassical perturbation method for three Sii lines: 5950.2Å, 6142.48Å and 6155.13Å. We revised the synthetic spectrum calculation code taking into account both Stark width and shift for these lines. From the comparison of our calculations with the observations we found that Stark broadening + the stratification effect can explain asymmetry of the Sii 6142.48Å and 6155.13Å lines in the atmospere of roAp star 10 Aql.

Abstract Copyright: ∼

Journal keyword(s): stars: chemically peculiar - line: profiles - atomic processes

Simbad objects: 3

Full paper

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Number of rows : 3

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Sp type	#ref 1850 - 2023
1	HD 32115	SB*	05 00 39.8078829840	-02 03 57.709292544		6.60	6.32	A9V	73
2	V* PP Vir	a2*	14 04 48.9376773456	+05 24 51.459774732		8.70	8.29	F0	79
3	* 10 Aql	a2*	18 58 46.9240671288	+13 54 23.941711692	6.23	6.14	5.89	A7VpSrEu_Ksn	284

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