2004ApJ...604L.129B

Query : 2004ApJ...604L.129B

2004ApJ...604L.129B - Astrophys. J., 604, L129-L132 (2004/April-1)

The importance of collisional coupling among high-energy pseudometastable levels of Fe II excited by Lyα.

BAUTISTA M.A., RUDY R.J. and VENTURINI C.C.

Abstract (from CDS):

We study the effects of high-energy pseudometastable levels in modeling Fe II spectra excited by Lyα fluorescence. We demonstrate that collisional couplings between metastable- and radiative-emitting levels are of fundamental importance in the formation of the spectrum under a wide range of physical conditions that encompass most astronomical fluorescent Fe II sources. Electron-impact-induced transitions from metastable levels strengthen the overall emission spectra and, in particular, strengthen the lines that results from secondary decay after Lyα pumping, like the so-called ``1 µm lines.''

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Journal keyword(s): Atomic Data - Atomic Processes - Galaxies: Active - Line: Formation - Stars: Novae, Cataclysmic Variables - Stars: Individual: Constellation Name: η Carinae

Simbad objects: 2

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Number of rows : 2
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 Mrk 1502 Sy1 00 53 34.9331107632 +12 41 35.929269132   14.41 14.03     ~ 1242 1
2 * eta Car s*b 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2543 0

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