Results 101 to 110 of about 29,336 (265)

Stellar evolution as seen by mixed modes

EPJ Web of Conferences, 2015
The detection of mixed modes in subgiants and red giants allows us to monitor stellar evolution from the main sequence to the asymptotic giant branch and draw seismic evolutionary tracks.
Mosser Benoît
doaj   +1 more source

The connection between missing AGB stars and extended horizontal branches

, 2010
Recent surveys confirm early results about a deficiency or even absence of CN-strong stars on the asymptotic giant branch (AGB) of globular clusters (GCs), although with quite large cluster-to-cluster variations.
A. Bragaglia, Bertelli, Brown, Buzzoni, Campbell, Caputo, Carretta, Carretta, Carretta, Castellani, Castellani, D’Cruz, E. Carretta, Frogel, Gratton, Greggio, Harris, Lee, Mallia, Marigo, Moehler, Norris, Paczynski, Pilachowski, Piotto, R. G. Gratton, Reimers, Renzini, Ripepi, Rosenberg, Rosenberg, S. Lucatello, Smith, Sneden, Sweigart, V. D’Orazi, Ventura   +36 more
core   +1 more source

Topographic Drag at the Core‐Mantle Interface

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract The length of day variations with periods from five to one hundred years are mainly due to core‐mantle interactions. Assuming a differential velocity between the core and the mantle, we investigate the pressure coupling on a core‐mantle boundary (CMB) interface with topography. Including rotation, buoyancy, and magnetic effects in local models
R. Monville, D. Cébron, D. Jault
wiley   +1 more source

White dwarf planets

EPJ Web of Conferences, 2013
The recognition that planets may survive the late stages of stellar evolution, and the prospects for finding them around White Dwarfs, are growing. We discuss two aspects governing planetary survival through stellar evolution to the White Dwarf stage ...
Bonsor Amy, Veras Dimitri, Villaver Eva, Mustill Alexander J., Wyatt Mark C.   +4 more
doaj   +1 more source

Mass Outflow and Chromospheric Activity of Red Giant Stars in Globular Clusters II. M13 and M92 [PDF]

, 2009
High resolution spectra of 123 red giant stars in the globular cluster M13 and 64 red giant stars in M92 were obtained with Hectochelle at the MMT telescope.
A. K. Dupree, Avrett, Baldry, Boyer, Boyer, Buonanno, Buonanno, Catelan, Catelan, Cavallo, Cho, Drukier, Ferraro, Helling, Kadla, Kemp, Lee, Lee, Ludendorff, Mayor, Mészáros, Piotto, Renzini, Russeva, Sills, Skrutskie, Sneden, Soker, Sweigart, Sz. Mészáros, Szentgyorgyi, T. Szalai, Zarro   +32 more
core   +1 more source

Dust production rate of asymptotic giant branch stars in the Magellanic Clouds [PDF]

, 2014
We compare theoretical dust yields for stars with mass 1 Msun 3 Msun and Z > 0.001. When compared to the most recent observations, our models support a stellar origin for the existing dust mass, if no significant destruction in the ISM occurs, with a ...
R. Schneider, R. Valiante, P. Ventura, Flavia dell Agli, M. Criscienzo, H. Hirashita, F. Kemper   +6 more
semanticscholar   +1 more source

An Interview With Peter Rousseeuw

International Statistical Review, Volume 93, Issue 1, Page 1-17, April 2025.
Summary Peter J. Rousseeuw is a statistician known mainly for his work on robust statistics and cluster analysis. Among his creations are least trimmed squares regression, the minimum covariance determinant estimator, the partitioning around medoids clustering method and the silhouettes graphical display.
Mia Hubert
wiley   +1 more source

Giant Planet Engulfment by Evolved Giant Stars: Light Curves, Asteroseismology, and Survivability

The Astrophysical Journal, 2023
About ten percent of Sun-like (1–2 M _⊙ ) stars will engulf a 1–10 M _J planet as they expand during the red giant branch (RGB) or asymptotic giant branch (AGB) phase of their evolution.
Christopher E. O’Connor, Lars Bildsten, Matteo Cantiello, Dong Lai   +3 more
doaj   +1 more source

The effects of thermohaline mixing on low-metallicity asymptotic giant branch stars

, 2009
We examine the effects of thermohaline mixing on the composition of the envelopes of low-metallicity asymptotic giant branch (AGB) stars. We have evolved models of 1, 1.5 and 2 solar masses from the pre-main sequence to the end of the thermally pulsing ...
Abia, Anders, Aoki, Aoki, Aoki, Aoki, Beers, Cameron, Campbell, Cantiello, Carretta, Charbonnel, Charbonnel, Denissenkov, Denissenkov, Eggleton, Eggleton, Eggleton, Eldridge, Fujimoto, Iglesias, Kippenhahn, Lau, Lebzelter, Lederer, Lucatello, Lugaro, Marigo, Marigo, Masseron, Nollett, Norris, Pols, Reimers, Richard, Richard J. Stancliffe, Siess, Sivarani, Sivarani, Stancliffe, Stancliffe, Stancliffe, Stancliffe, Stancliffe, Stancliffe, Stancliffe, Suda, Thompson, Ulrich, Uttenthaler, Vassiliadis   +50 more
core   +1 more source

Dissipative Particle Dynamics Modeling in Polymer Science and Engineering

WIREs Computational Molecular Science, Volume 15, Issue 2, March/April 2025.
Unveiling the dynamics of polymers: A mesoscale simulation of polymer chains (left) modeled through dissipative particle dynamics (DPD) with a detailed magnified view (right) illustrating the interactions and forces driving their hierarchical behavior. ABSTRACT Polymeric materials are intricate systems with unique properties across different length and
Sousa Javan Nikkhah, Matthias Vandichel
wiley   +1 more source