Results 151 to 160 of about 3,760 (219)

Dust Production from Sub-Solar to Super-Solar Metallicity in Thermally Pulsing Asymptotic Giant Branch Stars

, 2015
We discuss the dust chemistry and growth in the circumstellar envelopes (CSEs) of Thermally Pulsing Asymptotic Giant Branch (TP-AGB) star models, computed with the COLIBRI code, at varying initial mass and metallicity (Z = 0.001, 0.008, 0.02, 0.04, 0.06).
Girardi, L., Bressan, A., Javadi, A., NANNI, AMBRA, van Loon, J. T.h., MARIGO, PAOLA   +5 more
core  

Gas-phase synthesis of the bicyclic silicon tricarbide molecule (c-SiC₃) as a precursor to silicon carbide nanoparticles in space. [PDF]

Chem Sci
Goettl SJ, Fujioka K, Alves MO, Silva MX, Yang Z, Metya S, Medvedkov IA, Sattasathuchana T, Galvão BRL, Sun R, Kaiser RI.   +10 more
europepmc   +1 more source

NanoSIMS-Analyse und hochauflösende Elektronenmikroskopie an präsolaren Silikaten aus roten Riesensternen und Supernovaexplosionen

, 2009
This thesis deals with the analysis of “presolar” silicates and oxides by high resolution mass spectrometry and electron microscopy techniques. This “stardust” was identified by its extreme oxygen isotopic anomalies, which point to nucleosynthetic ...
Vollmer, Christian
core  

Finite-Capacity Thermodynamics of Causal Horizons. [PDF]

Entropy (Basel)
Antiba CA.
europepmc   +1 more source

Structure and evolution of asymptotic giant branch stars - by Kawthar Rashid Mehio

, 2007
Thesis (M.S.)--American University of Beirut, Dept.of Physics, 2007.;"Advisor: Dr. Mounib El Eid, Professor, Department of Physics--Member of Committee: Dr. Leonid Klushin, Professor, Department of Physics--Member of Committee: Dr.
Mehio, Kawthar Rashid
core  

Non-equilibrium preparation of (<i>E</i>)-phosphinimine (HPNH, X¹A') - a precursor to prebiotic phosphorylating agents. [PDF]

Chem Sci
Wang J, Sun BJ, Bergantini A, Wang Z, McAnally M, Marks JH, Chang AHH, Eckhardt AK, Kaiser RI.   +8 more
europepmc   +1 more source

AlF-AlF Reaction Dynamics between 200 K and 1000 K: Reaction Mechanisms and Intermediate Complex Characterization. [PDF]

Molecules, 2023
Wang W, Liu X, Pérez-Ríos J.
europepmc   +1 more source

TMC-1: Probing the Onset of Chemical Complexity in Space. [PDF]

ACS Earth Space Chem
Agúndez M, Cernicharo J.
europepmc   +1 more source

Theoretical models of asymptotic giant branch stars

Low and intermediate-mass stars are the most numerous evolved stars in galaxies, and are important chemical factories when on the asymptotic giant branch (AGB). AGB stars that experience He-shell instabilities - or thermal pulses - are known as thermally-pulsing AGB stars and are observed as cool, bright giants and supergiants.
openaire   +2 more sources

One month convection timescale on the surface of a giant evolved star. [PDF]

Nature
Vlemmings W, Khouri T, Bojnordi Arbab B, De Beck E, Maercker M.   +4 more
europepmc   +1 more source