Results 11 to 20 of about 3,080,831 (379)

The mass-loss return from evolved stars to the Large Magellanic Cloud V. The GRAMS carbon-star model grid [PDF]

, 2011
The total dust return rate from AGB and RSG star outflows is an important constraint to galactic chemical evolution models. However, this requires detailed radiative transfer (RT) modeling of individual stars, which becomes impractical for large data ...
Aringer, B. A. Sargent, Bernard, Bertelli, Blum, Cohen, Danchi, Dufour, Dwek, Epchtein, Frogel, Fukugita, Gautschy-Loidl, Goldreich, González-Lópezlira, Groenewegen, Groenewegen, Harrington, Houck, Höfner, Höfner, Höfner, Höfner, Iben, Ita, Jura, Karakas, Kemper, Kim, Kontizas, Kraemer, M. Meixner, Maraston, Maraston, Marigo, Marigo, Marigo, Mathis, Matsuura, Matsuura, Mattsson, Mattsson, Mattsson, Meixner, Meixner, Murakami, Paczyński, Preibisch, Pégourié, Rouleau, S. Srinivasan, Sargent, Sargent, Schlegel, Skrutskie, Speck, Speck, Srinivasan, Srinivasan, Suh, Ueta, Ueta, van Leeuwen, van Loon, van Loon, van Loon, van Loon, Vijh, Wachter, Walker, Wallerstein, Weinberg, Werner, Whitelock, Woitke, Woods, Wright, Zebrun, Zubko   +78 more
core   +3 more sources

Study of CS, SiO, and SiS abundances in carbon star envelopes: Assessing their role as gas-phase precursors of dust. [PDF]

Astron Astrophys, 2019
Aims We aim to determine the abundances of CS, SiO, and SiS in a large sample of carbon star envelopes covering a wide range of mass loss rates to investigate the potential role that these molecules could play in the formation of dust in the surroundings
Massalkhi S, Agúndez M, Cernicharo J.
europepmc   +3 more sources

The Abundance of SiC₂ in Carbon Star Envelopes: Evidence that SiC₂ is a gas-phase precursor of SiC dust. [PDF]

Astron Astrophys, 2018
Context Silicon carbide dust is ubiquitous in circumstellar envelopes around C-rich AGB stars. However, the main gas-phase precursors leading to the formation of SiC dust have not yet been identified.
Massalkhi S, Agúndez M, Cernicharo J, Velilla Prieto L, Goicoechea JR, Quintana-Lacaci G, Fonfría JP, Alcolea J, Bujarrabal V.   +8 more
europepmc   +3 more sources

Evidence for a companion to BM Gem, a silicate carbon star [PDF]

, 2008
Balmer and Paschen continuum emission as well as Balmer series lines of P Cygni-type profile from H_gamma through H_23 are revealed in the violet spectra of BM Gem, a carbon star associated with an oxygen-rich circumstellar shell (`silicate carbon star')
Akito Tajitsu, Alcolea J., Alksnis A., Alksnis A., Barnbaum C., Beland S., Bun’ei Sato, Cernicharo J., Clayton G. C., Eiji Kambe, Engels D., Etsuji Watanabe, Gilra D. P., Groenewegen M. A. T., Harrington J. P., Heiles C., Hideyuki Izumiura, Hiroyasu Ando, Iye M., Kaifu N., Ki’ichi Okita, Knapp G. J., Kozo Sadakane, Kunio Noguchi, Lloyd-Evans T., Lloyd-Evans T., Masahide Takada‐Hidai, Michitoshi Yoshida, Nicolet B., Noguchi K., Noguchi K., Noguchi K., Ohnaka K., Olnon F. M., Pottasch S. R., Satoshi Honda, Satoshi Kawanomoto, Shane C. D., Sugimoto D., Voges W., Voges W., Wako Aoki, Warner B., Wataru Tanaka, Willems F. J., Yamamura I., Yamashita Y.   +46 more
core   +2 more sources

The carbon star mystery: 40 years later [PDF]

European Physical Journal A, 2023
In 1981 Icko Iben Jr published a paper entitled “The carbon star mystery: why do the low mass ones become such, and where have all the high mass ones gone?”, where he discussed the discrepancy between the theoretical expectation and its observational ...
O. Straniero, C. Abia, I. Domínguez
semanticscholar   +1 more source

New Understanding of Large Magellanic Cloud Structure, Dynamics, and Orbit from Carbon Star Kinematics [PDF]

, 2002
We formulate a new and coherent understanding of the structure and dynamics of the Large Magellanic Cloud (LMC) and its orbit around and interaction with the Milky Way.
Roeland P. van der Marel, David R. Alves, Eduardo Hardy, N. B. Suntzeff   +3 more
openalex   +3 more sources

Helium enrichment and carbon-star production in metal-rich populations [PDF]

, 2014
We present new theoretical stellar evolutionary models of metal-rich asymptotic giant branch (AGB) stars. Stellar models are evolved with initial masses between 1Msun and 7Msun at Z=0.007, and 1Msun and 8Msun at Z=0.014 (solar) and at Z=0.03.
Amanda I. Karakas
openalex   +3 more sources

Population Synthesis of Helium White Dwarf–Red Giant Star Mergers and the Formation of Lithium-rich Giants and Carbon Stars [PDF]

Astrophysical Journal, 2020
The formation histories of lithium-rich and carbon-rich red giants are not yet understood. It has been proposed that the merger of a helium-core white dwarf with a red giant branch (RGB) star might provide a solution. We have computed an extended grid of
Xianfei Zhang, C. S. Jeffery, Yaguang Li, Shaolan Bi   +3 more
openalex   +3 more sources

Carbon star formation as seen through the non-monotonic initial–final mass relation [PDF]

, 2020
The initial–final mass relation (IFMR) links the birth mass of a star to the mass of the compact remnant left at its death. While the relevance of the IFMR across astrophysics is universally acknowledged, not all of its fine details have yet been ...
P. Marigo, J. Cummings, J. Curtis, J. Kalirai, Yang Chen, P. Tremblay, E. Ramirez-Ruiz, P. Bergeron, S. Bladh, A. Bressan, L. Girardi, G. Pastorelli, M. Trabucchi, Sihao Cheng, B. Aringer, P. D. Tio   +15 more
semanticscholar   +1 more source

The size, luminosity, and motion of the extreme carbon star IRC+10216 (CW Leonis) [PDF]

, 2012
Very Large Array observations of the extreme carbon star IRC+10216 at 7 mm wavelength with 40 milli-arcsec resolution resolve the object’s radio emission, which forms an almost round uniform disk of 83 milli-arcsec diameter, corresponding to 11 AU (for ...
K. M. Menten, M. J. Reid, T. Kamiński, M. J. Claussen   +3 more
openalex   +3 more sources