η Carinae: The 1998 brightening and the smearing-out effect

Details η Carinae: The 1998 brightening and the smearing-out effect η Carinae: The 1998 brightening and the smearing-out effect

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...423l...1v&link_type=abstract

Astronomy and Astrophysics, v.423, p.L1-L4 (2004)

Astronomy and Astrophysics

Astrophysics

6

Technique: Photometric, Stars: Individual: Η Carinae, Variables, Supergiants

Scientific paper

A comparison of broad-band photometry of the Homunculus (ground-based data) and of broad-band and narrow-band photometry of the central region (HST-based) from 1997 to 2003 reveals that, apart from the brightening in 1998, the Homunculus as well as the central star varied in a very similar way. This excludes smearing-out effects as an explanation for the difference between the brightening of the central region and that of the Homunculus during 1998. A plausible reason for the homologous light behaviour is enhanced extinction decrease in the line-of-sight to the central region during a global brightening occurring after the 1998.0 spectroscopic event. From 1998 to 2004 there is indeed a brightness excess of ˜0.3m between the Homunculus and the extrapolated secular brightening. We also illustrate that ground-based aperture photometry of the Homunculus is a reliable diagnostic tool for studying the variability of the central star.

Affiliated with

Also associated with

No associations

Rating

η Carinae: The 1998 brightening and the smearing-out effect 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 η Carinae: The 1998 brightening and the smearing-out effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and η Carinae: The 1998 brightening and the smearing-out effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1856502