Search Results - "Gobrecht, D"
-
1
CONSTRAINTS OF THE PHYSICS OF LOW-MASS AGB STARS FROM CH AND CEMP STARS
Published in The Astrophysical journal (20-12-2016)“…ABSTRACT We analyze a set of published elemental abundances from a sample of CH stars which are based on high resolution spectral analysis of ELODIE and…”
Get full text
Journal Article -
2
Developing a self-consistent AGB wind model – II. Non-classical, non-equilibrium polymer nucleation in a chemical mixture
Published in Monthly notices of the Royal Astronomical Society (11-11-2019)“…ABSTRACT Unravelling the composition and characteristics of gas and dust lost by asymptotic giant branch (AGB) stars is important as these stars play a vital…”
Get full text
Journal Article -
3
Constraints on Metal Oxide and Metal Hydroxide Abundances in the Winds of AGB Stars: Potential Detection of FeO in R Dor
Published in The Astrophysical journal (10-03-2018)“…Using the Atacama Large Millimeter/submillimeter Array (ALMA), we observed the stellar wind of two oxygen-rich asymptotic giant branch stars, IK Tau and R Dor,…”
Get full text
Journal Article -
4
Chemical tracers of a highly eccentric AGB–main-sequence star binary
Published in Nature astronomy (2024)“…Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars, including asymptotic giant branch (AGB)…”
Get full text
Journal Article -
5
(Sub)stellar companions shape the winds of evolved stars
Published in Science (American Association for the Advancement of Science) (18-09-2020)“…Complex stellar winds from evolved stars Stars less than eight times the mass of the Sun end their lives as planetary nebulae, structures of ionized gas thrown…”
Get full text
Journal Article -
6
Editorial: Cosmic dust—its formation, processing, and destruction
Published in Frontiers in astronomy and space sciences (24-07-2023)Get full text
Journal Article -
7
Revisiting fundamental properties of TiO$_2$ nanoclusters as condensation seeds in astrophysical environments
Published 11-07-2022“…A&A 668, A35 (2022) The formation of inorganic cloud particles takes place in several atmospheric environments including those of warm, hot, rocky and gaseous…”
Get full text
Journal Article -
8
The impact of third dredge-up on the mass loss of Mira variables
Published 29-09-2024“…Context: The details of the mass-loss process in the late stages of low- and intermediate-mass stellar evolution are not well understood, in particular its…”
Get full text
Journal Article -
9
Infrared spectra of TiO2 clusters for hot Jupiter atmospheres
Published 16-08-2023“…A&A 680, A65 (2023) Context. Clouds seem unavoidable in cool and dense environments, and hence, are necessary to explain observations of exoplanet atmospheres,…”
Get full text
Journal Article -
10
Dust in brown dwarfs and extra-solar planets. VIII. TiO$_2$ seed formation: 3D Monte Carlo versus kinetic approach
Published 10-08-2021“…A&A 654, A120 (2021) We aim to understand the onset of cloud formation {and study the formation of} TiO$_2$-CCNs. The formation of (TiO$_2$)$_{\rm N}$ clusters…”
Get full text
Journal Article -
11
Chemical tracers of a highly eccentric AGB-main sequence star binary
Published 24-07-2024“…Nature Astronomy, 8, pages 308-327 (2024) Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars,…”
Get full text
Journal Article -
12
ATOMIUM: Probing the inner wind of evolved O-rich stars with new, highly excited H$_2$O and OH lines
Published 04-05-2023“…A&A 674, A125 (2023) Water and the hydroxyl radical are major constituents of the envelope of O-rich late-type stars. Transitions involving energy levels that…”
Get full text
Journal Article -
13
ATOMIUM: Molecular inventory of 17 oxygen-rich evolved stars observed with ALMA
Published 06-12-2023“…The dusty winds of cool evolved stars are a major contributor of the newly synthesised material enriching the Galaxy and future generations of stars. However,…”
Get full text
Journal Article -
14
Sulphur-bearing molecules in AGB stars II: Abundances and distributions of CS and SiS
Published 01-08-2018“…A&A 617, A132 (2018) We surveyed 20 AGB stars of different chemical types using the APEX telescope, and combined this with an IRAM 30 m and APEX survey of CS…”
Get full text
Journal Article -
15
Constraints of the physics of low-mass AGB stars from CH and CEMP stars
Published 18-10-2016“…We analyze a set of published elemental abundances from a sample of CH stars which are based on high resolution spectral analysis of ELODIE and SUBARU/HDS…”
Get full text
Journal Article -
16
The VLT/SPHERE view of the ATOMIUM cool evolved star sample. I. Overview: Sample characterization through polarization analysis
Published 05-01-2023“…A&A 671, A96 (2023) Aims. Through the ATOMIUM project, based on an ALMA large program, we aim to present a consistent view of a sample of 17 nearby cool…”
Get full text
Journal Article -
17
Evolution, nucleosynthesis and yields of AGB stars at different metallicities (III): intermediate mass models, revised low mass models and the ph-FRUITY interface
Published 27-07-2015“…We present a new set of models for intermediate mass AGB stars (4.0, 5.0 and, 6.0 Msun) at different metallicities (-2.15<=Fe/H]<=+0.15). This integrates the…”
Get full text
Journal Article -
18
ATOMIUM: ALMA tracing the origins of molecules in dust forming oxygen rich M-type stars: Motivation, sample, calibration, and initial results
Published 13-12-2021“…A&A 660, A94 (2022) This overview paper presents ATOMIUM, a Large Programme in Cycle 6 with the Atacama Large Millimeter-submillimeter Array (ALMA). The goal…”
Get full text
Journal Article -
19
ATOMIUM: Halide molecules around the S-type AGB star W Aquilae
Published 10-09-2021“…A&A 655, A80 (2021) S-type asymptotic giant branch (AGB) stars are thought to be intermediates in the evolution of oxygen- to carbon-rich AGB stars. The…”
Get full text
Journal Article -
20
(Sub)stellar companions shape the winds of evolved stars
Published 28-09-2020“…Science, 2000, Vol 369, Issue 6510, p. 1497 Binary interactions dominate the evolution of massive stars, but their role is less clear for low- and…”
Get full text
Journal Article