2002ApJ...576L.169B

Query : 2002ApJ...576L.169B

2002ApJ...576L.169B - Astrophys. J., 576, L169-L172 (2002/September-2)

Laboratory measurements of the relative intensity of the 3s⟶2p and 3d⟶2p transitions in Fe XVII.

BEIERSDORFER P., BEHAR E., BOYCE K.R., BROWN G.V., CHEN H., GENDREAU K.C., GU M.-F., GYGAX J., KAHN S.M., KELLEY R.L., PORTER F.S., STAHLE C.K. and SZYMKOWIAK A.E.

Abstract (from CDS):

The intensity ratios of the 3s⟶2p and 3d⟶2p lines in Fe XVII were measured on the Livermore electron beam ion trap employing a complementary set of spectrometers, including a high-resolution crystal spectrometer and the Goddard 32 pixel calorimeter. The resulting laboratory data are in agreement with satellite measurements of the Sun and astrophysical sources in collisional equilibrium such as Capella, Procyon, and NGC 4636. The results disagree with earlier laboratory measurements and assertions that processes not accounted for in laboratory measurements must play a role in the formation of the Fe XVII spectra in solar and astrophysical plasmas.

Abstract Copyright: ∼

Journal keyword(s): Atomic Data - Stars: Coronae - Stars: Individual: Name: Capella - Stars: Individual: Name: Procyon - Sun: X-Rays, Gamma Rays - X-Rays: General

Simbad objects: 4

Full paper

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Number of rows : 4

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	* alf Aur	SB*	05 16 41.35871	+45 59 52.7693	1.33	0.88	0.08	-0.52	-0.96	G3III:	1177	0
2	* alf CMi	SB*	07 39 18.11950	+05 13 29.9552	0.82	0.79	0.37	-0.05	-0.28	F5IV-V+DQZ	1864	0
3	NAME NGC 4636 Group	GrG	12 42 49.5	+02 41 08						~	562	0
4	NGC 4636	LIN	12 42 49.8333280080	+02 41 15.951929028		12.62	11.84			~	1117	1

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