Results 121 to 130 of about 29,336 (265)
Modelling the evolution and nucleosynthesis of carbon-enhanced metal-poor stars [PDF]
, 2008 We present the results of binary population simulations of carbon-enhanced metal-poor (CEMP) stars. We show that nitrogen and fluorine are useful tracers of the origin of CEMP stars, and conclude that the observed paucity of very nitrogen-rich stars puts
Bonačić Marinović +11 more
core +1 more source
Evolution of thermally pulsing asymptotic giant branch stars – II. Dust production at varying metallicity [PDF]
, 2013 We present the dust ejecta of the new stellar models for the Thermally Pulsing Asymptotic Giant Branch (TP-AGB) phase computed with the COLIBRI code. We use a formalism of dust growth coupled with a stationary wind for both M and C-stars. In the original
A. Nanni +3 more
semanticscholar +1 more source
White Dwarf Stars in the Big Data Era
Astronomische Nachrichten, Volume 346, Issue 1, January 2025.ABSTRACT White dwarf stars are the most common endpoint of stellar evolution. Therefore, these old, numerous and compact objects provide valuable information on the late stages of stellar evolution, the physics of dense plasma and the structure and evolution of our Galaxy.
Maria Camisassa
wiley +1 more source
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
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. +4 more
core +1 more source
Dynamic Random Intersection Graph: Dynamic Local Convergence and Giant Structure
Random Structures &Algorithms, Volume 66, Issue 1, January 2025.ABSTRACT Random intersection graphs containing an underlying community structure are a popular choice for modeling real‐world networks. Given the group memberships, the classical random intersection graph is obtained by connecting individuals when they share at least one group.
Marta Milewska +2 more
wiley +1 more source
Sliding along the Eddington Limit—Heavy-Weight Central Stars of Planetary Nebulae
Galaxies, 2018 Due to thermal pulses, asymptotic giant branch (AGB) stars experience periods of convective mixing that provide ideal conditions for slow neutron-capture nucleosynthesis.
Lisa Löbling
doaj +1 more source
Systematic Search for Water Fountain Candidates Using the Databases of Circumstellar Maser Sources
The Astrophysical Journal Supplement SeriesWater 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 +8 more
doaj +1 more source
, 2010 We explore the effects of photodissociation at the stages of post-asymptotic giant branch stars to find a mechanism able to produce multi-polar shapes. We perform two-dimensional gasdynamical simulations to model the effects of photodissociation in proto-
Abgrall +51 more
core +1 more source