Results 121 to 130 of about 3,760 (219)

A new synthetic model for asymptotic giant branch stars

, 2015
We present a synthetic model for thermally pulsing asymptotic giant branch (TPAGB) evolution constructed by fitting expressions to full evolutionary models in the metallicity range 0.0001 ≤ Z ≤ 0.02.
Pols, O.R., Karakas, Amanda, Izzard, R G, Tout, Christopher A   +3 more
core   +1 more source

FEAST: Probing the Stellar Population of the Starburst Dwarf Galaxy NGC 4449 with JWST/NIRCam

The Astrophysical Journal
We present new JWST/NIRCam observations of the starburst irregular galaxy NGC 4449, obtained in Cycle 1 as part of the Feedback in Emerging extrAgalactic Star clusTers program, which we use to investigate its resolved stellar populations and their ...
Matteo Correnti, Giacomo Bortolini, Flavia Dell’Agli, Angela Adamo, Michele Cignoni, Elena Sacchi, Monica Tosi, Alex Pedrini, Anne S. M. Buckner, Daniela Calzetti, Ana Duarte-Cabral, Bruce G. Elmegreen, Helena Faustino Vieira, John S. Gallagher, Kathryn Grasha, Benjamin Gregg, Kelsey E. Johnson, Thomas S.-Y. Lai, Drew Lapeer, Sean T. Linden, Matteo Messa, Goran Ostlin, Elena Sabbi, Linda J. Smith, Paolo Ventura   +24 more
doaj   +1 more source

Near-infrared properties of asymptotic giant branch stars in nearby dwarf elliptical galaxy NGC 205

, 2012
Aims. We investigated the distribution of resolved asymptotic giant branch (AGB) stars over a much larger area than covered by previous near-infrared studies in the nearby dwarf elliptical galaxy NGC 205. Methods.
S.-H. Chun, M. Y. Jung, J. Ko, Y.-J. Sohn, J.-W. Kim, H.-I. Kim   +5 more
core   +1 more source

Observations of Molecular CN toward S-type Asymptotic Giant Branch Stars

The Astronomical Journal
S-type asymptotic giant branch (AGB) stars are defined by their carbon-to-oxygen (C/O) ratio approaching unity. However, observations of circumstellar molecules in these stars are limited and challenging.
Yanan Feng, Xiaohu Li, Xiaofeng Yang, Tom J. Millar, Ryszard Szczerba, Sheng-Li Qin, Xuejian Jiang, Donghui Quan, Juan Tuo, Zhenzhen Miao, Sheng-Yuan Liu, Xiang Liu   +11 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Velocity Observations of Multiple-Mode Asymptotic Giant Branch Variable Stars

, 2002
Numerous infrared spectroscopic observations were obtained of nine asymptotic giant branch (AGB) field M giants that have multiple periods of light variability.
Lebzelter, Thomas, Hinkle, Kenneth H., Fekel, Francis C., Joyce, Richard R.   +3 more
core  

Infrared excess around nearby red giant branch stars and Reimers law (

, 2012
Context. Mass loss is one of the fundamental properties of asymptotic giant branch (AGB) stars, but for stars with initial masses below  ~1 M⊙, the mass loss on the first red giant branch (RGB) actually dominates mass loss on the AGB.
M. A. T. Groenewegen
core   +1 more source

Asymptotic-giant-branch stars [PDF]

Nature, 1992
openaire   +1 more source

Asymptotic giant branch stars near the sun

The Astronomical Journal, 1992
The available red and near infrared photometry of M, S, and C stars in the Bright Star Catalogue is discussed on the basis of the asymptotic giant branch (AGB) ledge in the temperature-luminosity plane that was previously found to satisfy all old disk population objects.
openaire   +1 more source

Hot Bottom Burning in Asymptotic Giant Branch Stars

, 2007
this paper, we want to discuss only the situation with Al. This is found in many grains, such as SiC (believed to form in the carbon-rich atmospheres of Carbon stars), graphite (a very complex and heterogeneous sample of grains) and corundum (Al 2 O 3 ...
Cheryl A. Frost, Robert C. Cannon, Peter R. Wood, Peter, John C. Lattanzio   +4 more
core