Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.278..811h&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 278, Issue 3, pp. 811-820.
Astronomy and Astrophysics
Astronomy
19
Binaries: General, Stars: Early-Type, Stars: Agb And Post-Agb, Stars: Individual: Cpd-61 Deg455, Infrared: Stars
Scientific paper
High-resolution, high-signal-to-noise optical and near-infrared spectra, along with lower resolution infrared spectra, of the high-latitude, faint B-type star CPD-61 deg455 have been obtained using the 3.9-m Anglo-Australian Telescope. Using LTE model atmosphere codes to compute optical absorption profiles in the hot star, we find atmospheric parameters of T_eff=25000k and logg~3.6 furthermore, the abundance pattern of metals as measured differentially with respect to the Galactic disc B-type star xi^1CMa is not that expected for a normal young object. We show that the previous interpretation of this object as a composite consisting of a B-type star with a possible early K-type giant secondary is consistent with the near-infrared and infrared data. We hypothesize that CPD-61 deg455 is in fact an evolved, post-asymptotic giant branch (post-AGB) star in a binary system, and is possibly a hotter analogue of the binary systems containing younger, cooler post-AGB stars discussed by van Winckel, Waelkens & Waters.
Dufton Philip L.
Hambly Nigel C.
Keenan Francis P.
Lumsden Stuart L.
No associations
LandOfFree
On the nature of the high-latitude B-type star CPD-61 deg455 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 nature of the high-latitude B-type star CPD-61 deg455, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the nature of the high-latitude B-type star CPD-61 deg455 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-854864