eta Carinae: The optical flare-like events during low-excitation passages

Details eta Carinae: The optical flare-like events during low-excitation passages eta Carinae: The optical flare-like events during low-excitation passages

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...405.1057v&link_type=abstract

Astronomy and Astrophysics, v.405, p.1057-1062 (2003)

Astronomy and Astrophysics

Astrophysics

6

Technique: Photometric, Stars: Individual: Eta Carinae, Stars: Variables: General, Stars: Supergiants

Scientific paper

The 1992.5 and 1998.0 low-excitation events of the possible binary in the core of eta Carinae show a conspicuous flare-like event in optical and near-ultraviolet light. These events last a couple of months and have a light amplitude of 0.1m-0.2m in V. Considering the presence of a dense (bi-polar) stellar wind, one explanation could be that some type of a hot area is created by an increased mass flow from the S Dor primary near the hypothetical periastron. These flare-like events are terminated by sharp dips. The magnitude differences between the underlying light source and the central light (``Component A'') are derived. It turns out that they are fainter than Component A by ~ 2fm5 . The luminosity could be of the order of 105 Lsun. It was possible to derive two new continuum values in the near-UV, reinforcing the impression derived from the HST fluxes that Component A has a very strong radiation peak in the Balmer continuum. This can probably be explained by the strong emission of the stellar wind.

Affiliated with

Also associated with

No associations

Rating

eta Carinae: The optical flare-like events during low-excitation passages does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with eta Carinae: The optical flare-like events during low-excitation passages, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and eta Carinae: The optical flare-like events during low-excitation passages will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1462218