Chemical composition of post-AGB star candidates
Sign Up to like & getrecommendations! Published in 2018 at "Astronomische Nachrichten"
DOI: 10.1002/asna.201913542
Abstract: We present a high resolution detailed abundance analysis for a sample of six post-AGB candidate stars, five of them had not been studied spectroscopically in the optical region. All the analyzed objects are IRAS sources… read more here.
Keywords: agb star; chemical composition; post; post agb ... See more keywords
Jet creation in post-AGB binaries: the circum-companion accretion disk around BD+46°442
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201731493
Abstract: Aims. We aim at describing and understanding binary interaction processes in systems with very evolved companions. Here, we focus on understanding the origin and determining the properties of the high-velocity outflow observed in one such… read more here.
Keywords: disk; jet; agb binaries; post agb ... See more keywords
The cooling-down central star of the planetary nebula SwSt 1: a late thermal pulse in a massive post-AGB star?
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa2274
Abstract: SwSt 1 (PN G001.5-06.7) is a bright and compact planetary nebula containing a late [WC]-type central star. Previous studies suggested that the nebular and stellar lines are slowly changing with time. We studied new and… read more here.
Keywords: star; central star; planetary nebula; post agb ... See more keywords
Rapid grain growth in post-AGB disc systems from far-infrared and sub-millimetre photometry
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa425
Abstract: The timescales on which astronomical dust grows remain poorly understood, with important consequences for our understanding of processes like circumstellar disk evolution and planet formation.A number of post-asymptotic giant branch stars are found to host… read more here.
Keywords: grain growth; discs; growth; post agb ... See more keywords
GK Car and GZ Nor: two low-luminous, depleted RV Tauri stars
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1967
Abstract: We performed a photometric and spectroscopic analysis of two RV Tauri stars: GK Car and GZ Nor. Both objects are surrounded by hot circumstellar dust. Their pulsation periods, derived from ASAS (All Sky Automated Survey)… read more here.
Keywords: luminosity; tauri stars; post; post agb ... See more keywords
High-resolution spectroscopy of the high-velocity hot post-AGB star IRAS 18379–1707 (LS 5112)
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz3355
Abstract: The high-resolution ($R\sim48\,000$) optical spectrum of the B-type supergiant LS 5112, identified as the optical counterpart of the post-AGB candidate IRAS 18379-1707, is analysed. We report the detailed identifications of the observed absorption and emission… read more here.
Keywords: 18379 1707; iras 18379; spectroscopy; post agb ... See more keywords