IIA Institutional Repository

Browsing by Subject "Stars: AGB And Post-AGB"

Browsing by Subject "Stars: AGB And Post-AGB"

Sort by: Order: Results:

  • Abundance Analyses of the Field RV Tauri Variables: EP Lyrae, DY Orionis, AR Puppis, and R Sagittae 
    Gonzalez, G; Lambert, D. L; Giridhar, S (The American Astronomical Society, 1997-04)
    Analyses of the photospheric compositions of the four field RV Tauri stars, EP Lyr, DY Ori, AR Pup, and R Sge, indicate that to varying degrees they have experienced fractionation processes that have preferentially depleted ...
  • Abundance similarities between the RCrB star V854Cen and the born-again Sakurai's object 
    Asplund, M; Gustafsson, B; Kameswara Rao, N; Lambert, D. L (European Southern Observatory, 1998-04)
    The elemental abundances of the mildly hydrogen-deficient R Coronae Borealis (RCrB) star V854Cen have been estimated. The RCrB stars have been divided into majority and minority classes judging by their abundance patterns. ...
  • Chemical composition of evolved stars of high galactic latitude 
    Giridhar, S; Arellano Ferro, A (EDP Sciences, 2005-11)
    We have carried out abundance analysis for a sample of high galactic latitude supergiants in search of evolved stars. We find that HD 27381 has atmospheric parameters and an abundance pattern very similar to that of the ...
  • IUE and ISO observations of the bipolar proto-planetary nebula Hen 401 (IRAS 10178-5958) 
    Parthasarathy, M; García-Lario, P; Gauba, G; de Martino, D; Nakada, Y; Fujii, T; Pottasch, S. R; de Cordoba, L. S. F (EDP Sciences, 2001-09)
    We present ultraviolet (IUE) and infrared (ISO) observations of the bipolar proto-planetary nebula Hen 401 which, combined with previously available optical and near infrared data, are used to reconstruct the overall ...
  • Low resolution spectroscopy of ISOGAL sources: Search for early-type stars with infrared excess 
    Schultheis, M; Parthasarathy, M; Omont, A; Cohen, M; Ganesh, S; Sevre, F; Simon, G (E D P Sciences, 2002-05)
    An analysis of low resolution spectra and infrared data of 29 ISOGAL-DENIS sources with mid-IR excess is presented. Eight ISOGAL sources from our sample with 7-15 mu m excesses are found to be B and A-type stars, some of ...
  • A stellar endgame - the born-again Sakurai's object 
    Asplund, M; Gustafsson, B; Lambert, D. L; Kameswara Rao, N (European Southern Observatory, 1997-05)
    The surface chemical composition of this remarkable star shows that it is hydrogen-deficient, carbon-rich and enriched in the light s-process elements. Spectra taken in May and October 1996 indicate a decrease in the surface ...
  • UV (IUE) spectra of the central stars of high latitude planetary nebulae Hb7 and Sp3 
    Gauba, G; Parthasarathy, M; Nakada, Y; Fujii, T (EDP Sciences, 2001-07)
    We present an analysis of the UV (IUE) spectra of the central stars of Hb7 and Sp3. Comparison with the IUE spectrum of the standard star HD 93205 leads to a spectral classification of O3V for these stars, with an effective ...

Search DSpace

Browse

My Account