Results 111 to 120 of about 26,787 (255)

Model Dust Envelopes for Asymptotic Giant Branch Stars. I. OH/IR Stars [PDF]

Journal of Astronomy and Space Sciences, 1995
OH/IR stars are the most massive and youngest subclass in asymptotic giant branch stars which pass through sporadic superwind phases. We have modeled the dust envelopes around OH/IR stars with close attention to the evolution of the structure of the dust
Kyung-Won Suh
doaj  

Introduction to Asymptotic Giant Branch Stars

Journal of Physics: Conference Series, 2016
A brief introduction on the main characteristics of the asymptotic giant branch stars (briefly: AGB) is presented. We describe a link to observations and outline basic features of theoretical modeling of these important evolutionary phases of stars. The most important aspects of the AGB stars is not only because they are the progenitors of white dwarfs,
openaire   +1 more source

The origin of the spurious iron spread in the globular cluster NGC 3201

, 2015
NGC 3201 is a globular cluster suspected to have an intrinsic spread in the iron content. We re-analysed a sample of 21 cluster stars observed with UVES-FLAMES at the Very Large Telescope and for which Simmerer et al.
Ferraro, F. R., Lanzoni, B., Lapenna, E., Massari, D., Mucciarelli, A.   +4 more
core   +1 more source

Asymptotic Giant Branch Mass-loss Rates and Metal Yields from Scaled Mixing-length and Mass-loss Parameters

The Astrophysical Journal
Stars on the asymptotic giant branch (AGB) enrich the interstellar medium with carbon, nitrogen, and dust, which in turn boost cooling and promote future generations of planet and star formation.
Ezra Huscher, Kristian Finlator, Jason Jackiewicz   +2 more
doaj   +1 more source

Water content and wind acceleration in the envelope around the oxygen-rich AGB star IK Tauri as seen by Herschel/HIFI [PDF]

, 2010
During their asymptotic giant branch evolution, low-mass stars lose a significant fraction of their mass through an intense wind, enriching the interstellar medium with products of nucleosynthesis.
Decin, L., Morris, P.
core  

From the atmosphere to the circumstellar environment in cool evolved stars

, 2014
We discuss and illustrate contributions that optical interferometry has made on our current understanding of cool evolved stars. We include red giant branch (RGB) stars, asymptotic giant branch (AGB) stars, and red supergiants (RSGs).
Paladini, Claudia, Wittkowski, Markus
core   +1 more source

Mass Losing Asymptotic Giant Branch Stars And Supergiants

, 2016
This paper presents a summary of four invited and twelve contributed presentations on asymptotic giant branch stars and red supergiants, given over the course of two afternoon splinter sessions at the 19th Cool Stars Workshop. It highlights both recent observations and recent theory, with some emphasis on high spatial resolution, over a wide range of ...
Whitelock, Patricia A., Boyer, Martha, Höfner, Susanne, Wittkowski, Markus, Zijlstra, Albert A.   +4 more
openaire   +2 more sources

Mira Variables Based on Emission Lines in LAMOST DR9

The Astrophysical Journal
We present a sample of 335 Mira variables, extracted from DR9 of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey. These variables are characterized by the Balmer emissions (H δ , H γ , H β , and H α ) and the metal emissions
Cai-Xia Qu, A-Li Luo, Bing Du, Shu-Guo Ma   +3 more
doaj   +1 more source

Phosphorus-bearing molecules PO and PN at the edge of the Galaxy. [PDF]

Nature, 2023
Koelemay LA, Gold KR, Ziurys LM.
europepmc   +1 more source

Evolution and nucleosynthesis in low mass Asymptotic Giant Branch stars [PDF]

, 2008
S. Cristallo
openalex   +1 more source