On the Multiplicity of eta Carinae

Details On the Multiplicity of eta Carinae On the Multiplicity of eta Carinae

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...505l.131l&link_type=abstract

The Astrophysical Journal, Volume 505, Issue 2, pp. L131-L133.

Other

19

Scientific paper

The nebula around the luminous blue variable (LBV) eta Car is extremely N rich and C and O poor, which is indicative of CNO-cycle products. On the other hand, the recent Hubble Space Telescope-Goddard High-Resolution Spectrograph observation of the nucleus of eta Car shows the spectrum of a star with stellar-wind lines of C ii, C iv, Si ii, Si iv, etc. The spectrum is very similar to those of the LBV star P Cygni and of WN9/Ofpe stars. This line spectrum is indicative of a photosphere that is only mildly enhanced by CN-cycle products. This situation of a nebula that is chemically more advanced than the central star cannot be reached by the evolution of a single star. The dichotomy shows that the star whose spectrum now dominates the nucleus was not the star that ejected the nebula. We discuss this evidence for multiplicity and combine it with the information about the 5.5 yr periodicity in the emission lines.

Affiliated with

Also associated with

No associations

Rating

On the Multiplicity of eta Carinae 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 On the Multiplicity of eta Carinae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Multiplicity of eta Carinae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1720129