Results 101 to 110 of about 3,760 (219)

THE MATHEMATICAL MODEL OF THE PHOTOMETRIC VARIABILITY AND CLASSIFICATION OF SEMIREGULAR PULSATING ASYMPTOTIC GIANTS BRANCH STARS

Odessa Astronomical Publications, 2012
The modern review of the stars which are located at the position of asymptotic giant branch at the HRdiagram is presented. The most interesting problems connected to these objects are noted, as well as attention is paid to classification and to the ...
L. S. Kudashkina
doaj   +1 more source

Systematic Search for Water Fountain Candidates Using the Databases of Circumstellar Maser Sources

The Astrophysical Journal Supplement Series
Water fountains (WFs) are thought to be objects in the morphological evolution of the circumstellar envelopes of low- and intermediate-mass evolved stars, transitioning from spherically symmetric to asymmetric shapes.
Haichen Fan, Jun-ichi Nakashima, D. Engels, Yong Zhang, Jian-Jie Qiu, Huan-Xue Feng, Jia-Yong Xie, Hiroshi Imai, Chih-Hao Hsia   +8 more
doaj   +1 more source

Pulsating post-asymptotic giant branch stars [PDF]

Monthly Notices of the Royal Astronomical Society, 1993
Numerical stability analyses of envelopes of post-asymptotic giant branch stars show instabilities towards radial pulsations over a broad range of effective temperatures, although only stars with sufficiently high luminosity-to-mass ratios and high enough iron abundances are excited.
openaire   +1 more source

Spitzer observations of large amplitude variables in the LMC and IC 1613

EPJ Web of Conferences, 2017
The 3.6 and 4.5 ìm characteristics of asymptotic giant branch variables in the LMC and IC 1613 are discussed. For C-rich Mira variables there is a very clear periodluminosity-colour relation, where the [3.6] .
Whitelock Patricia A., Kasliwal Mansi, Boyer Martha   +2 more
doaj   +1 more source

Dredge-Up in Asymptotic Giant Branch Stars [PDF]

Symposium - International Astronomical Union, 1999
The third dredge-up phenomenon in asymptotic giant branch stars, responsible for the formation of C stars, is discussed based on detailed evolutionary model calculations. The structural readjustment of the star as dredge-up proceeds is analyzed, and its consequences on dredge-up predictions discussed.
openaire   +1 more source

Mass loss and rotational CO emission from Asymptotic Giant Branch stars [PDF]

, 2003
: We present submillimeter observations of rotational transitions of carbon monoxide from J = 2 -> 1 up to 7 -> 6 for a sample of Asymptotic Giant Branch stars and red supergiants.
Tielens, A.G.G.M., Kemper, F, A. G. G. M. Tielens, Dijkstra, C.,, Tielens, A. G. G. M.,, Cami, J, Cami, J.,, de Koter, A, Tielens, A. G. G. M., Waters, L. B. F. M., Justtanont, K., Justtanont, K, R. Stark, L. B. F. M. Waters, Stark, R, Dijkstra, C., Tielens, AGGM, Koter, A. de, K. Justtanont, Justtanont, K.,, Waters, L.B.F.M., Waters, LBFM, F. Kemper, Kemper, F., Koter, A. de,, Cami, J., J. Cami, Waters, L. B. F. M.,, Kemper, F.,, Stark, R., de Koter, A., Dijkstra, C, A. de Koter, Stark, R.,, C. Dijkstra   +34 more
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Extending the cosmic distance ladder two orders of magnitude with strongly lensed Cepheids, carbon AGB stars, and RGB stars

Astronomy & Astrophysics
Gravitational lensing by galaxy clusters can create extreme magnification (μ > 1000) near the cluster caustics, thereby enabling detections of individual luminous stars in high-redshift background galaxies.
Diego J. M., Willner S. P., Palencia J. M., Windhorst R. A.   +3 more
doaj   +1 more source

Extra–Mixing Processes in Asymptotic Giant Branch Stars [PDF]

, 2011
Extra mixing is the mixing of material in regions that are stable against convection. We identify two situations in asymptotic giant branch stars where extra mixing is thought to be required.
Stancliffe, Richard James, Lattanzio, John Charles   +1 more
core  

Multiple populations along the asymptotic giant branch of the globular cluster M 4 [PDF]

, 2016
Nearly all Galactic globular clusters host stars that display characteristic abundance anti-correlations, like the O-rich/Na-poor pattern typical of field halo stars, together with O-poor/Na-rich additional components.
Savino, A, Stetson, PB, Salaris, M., Stetson, P. B., Cassisi, S., Cassisi, S, CASSISI, Santi, Lardo, C, Lardo, C., Salaris, M, Donati, P, Savino, A., Donati, P.   +12 more
core   +1 more source

Publication Only

HemaSphere, Volume 10, Issue S1, June 2026.
wiley   +1 more source