Results 101 to 110 of about 270 (136)

Instantaneous formation of interstellar minerals and mineral quantum dots. [PDF]

RSC Adv
Roy A, Singh SV, Ramachandran R, Meka JK, Ambresh M, Vijay T, Janardhan P, Jayaram V, Venkatraman V, Das A, Hill H, Bhardwaj A, Mason NJ, Sivaraman B.   +13 more
europepmc   +1 more source

Newly formed dust within the circumstellar environment of SN Ia-CSM 2018evt. [PDF]

Nat Astron
Wang王 L灵, Hu M, Wang L, Yang 杨 Y轶, Yang J, Gomez H, Chen S, Hu L, Chen TW, Mo J, Wang X, Baade D, Hoeflich P, Wheeler JC, Pignata G, Burke J, Hiramatsu D, Howell DA, McCully C, Pellegrino C, Galbany L, Hsiao EY, Sand DJ, Zhang J, Uddin SA, Anderson JP, Ashall C, Cheng C, Gromadzki M, Inserra C, Lin H, Morrell N, Morales-Garoffolo A, Müller-Bravo TE, Nicholl M, Gonzalez EP, Phillips MM, Pineda-García J, Sai H, Smith M, Shahbandeh M, Srivastav S, Stritzinger MD, Yang S, Young DR, Yu L, Zhang X.   +46 more
europepmc   +1 more source

The mid- and far-infrared colours of AGB and post-AGB stars [PDF]

Astronomy and Astrophysics, 2006
With the advent of space missions, like SPITZER and ASTRO-F, with sensitive detectors in the near- and mid-infra red covering a reasonable field-of-view and having a good spatial resolution, it will be possible to detect individual AGB stars in Local Group galaxies.
exaly   +3 more sources

Post-AGB Stars as Tracers of AGB Nucleosynthesis: An Update

Universe, 2022
The chemical evolution of galaxies is governed by the chemical yields from stars, and here we focus on the important contributions from asymptotic giant branch (AGB) stars. AGB nucleosynthesis is, however, still riddled with complexities. Observations from post-asymptotic giant branch (post-AGB) stars serve as exquisite tools to quantify and understand
Van Winckel H, Devika Kamath
exaly   +3 more sources

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Post-AGB Stars

2004
The final phase of the evolution of low- and intermediate-mass stars is characterized by rapid changes in the structure and properties of the star and its circumstellar envelope (CSE); see Chapter 2. While it ascends the Asymptotic Giant Branch (AGB), its luminosity rises to values several thousand times that during core-hydrogen burning.
Christoffel Waelkens, Rens B. F. M. Waters   +1 more
openaire   +1 more source

AGB and post-AGB stars as VLTI targets

SPIE Proceedings, 2000
Low and intermediate mass stars turn into cool giants after their evolution on the main sequence. During these evolutionary stages, their surface is enriched in several chemical species. These stars are also characterized by large mass-loss rates revealed by their molecules and dust- rich circumstellar envelopes. They thus play an important role in the
Patrick de Laverny, Bruno Lopez
openaire   +1 more source

Post-AGB Stars

Annual Review of Astronomy and Astrophysics, 2003
▪ Abstract  In this contribution, a review is presented on the ample data obtained on post-AGB stars, both on the central stars and their circumstellar material. The fast evolutionary phase is characterized by a rapid change in the properties of the objects, but the variety is so large that there is yet no clear consensus on how the detailed studies of
openaire   +1 more source

Hot Post-AGB Stars

2001
From the study of IRAS sources with far-IR colors similar to planetary nebulae (PNe), several proto-planetary nebulae with hot (OB) post-AGB central stars have been detected. These stars form an evolutionary link between the cooler G,F,A supergiant stars that have evolved off the Asymptotic Giant Branch (AGB) and the hot (OB) central stars of PNe.
M. Parthasarathy, G. Gauba, T. Fujii, Y. Nakada   +3 more
openaire   +1 more source

Circumstellar Arcs in AGB Post-AGB Stars

2001
One of the most unexpected discoveries of the Hubble Space Telescope (HST) observations of planetary nebulae (PN) is the revelation of concentric arcs in the nebulae. As of 2000, circumstellar arcs have been found in three PN (NGC 7027, Bond 2000; NGC 6543, Bond 2000, Terzian & Hajian 2000; Hb 5, Balick & Wilson 2000), and three proto-planetary nebulae
Sun Kwok, Kate Y. L. Su, J. A. Stoesz
openaire   +1 more source