SIMBAD references

2005A&A...436..945H - Astronomy and Astrophysics, volume 436, 945-952 (2005/6-4)

Time variations of the narrow Fe II and H I spectral emission lines from the close vicinity of η Carinae during the spectral event of 2003.

HARTMAN H., DAMINELI A., JOHANSSON S. and LETOKHOV V.S.

Abstract (from CDS):

The spectrum of Eta Carinae and its ejecta shows slow variations over a period of 5.5-years. However, the spectrum changes drastically on a time scale of days once every period called the ``spectral event''. We report on variations in the narrow emission line spectrum of gas condensations (the Weigelt blobs) close to the central star during a spectral event. The rapid changes in the stellar radiation field illuminating the blobs make the blobs a natural astrophysical laboratory to study atomic photoprocesses. The different responses of the HI Paschen lines, fluorescent <FeII> lines and forbidden [FeII] lines allow us to identify the processes and estimate physical conditions in the blobs. This paper is based on observations from the Pico dos Dias Observatory (LNA/Brazil) during the previous event in June 2003.

Abstract Copyright:

Journal keyword(s): atomic processes - radiation mechanisms: non-thermal - ISM: HII regions - stars: individual: Eta Carinae

Simbad objects: 2

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