activity
20202026
most citedDEATHSTAR: Nearby AGB stars with the Atacama Compact Array II. CO envelope sizes and asymmetries: The S-type stars

12 citations · 15 across the 7 of their papers we have counts for

collaborators

7 papers

astro-ph.SR2026

A giant magnetic eruption from the asymptotic giant branch star Mira A

W. Vlemmings, M. Andriantsaralaza, B. Bojnordi Arbab +14

Mass loss during the advanced evolutionary stages of low- and intermediate-mass stars is traditionally attributed to dust-driven winds, whereas the influence of magnetic fields rem…

astro-ph.SR2026

The unique capabilities of HST for stellar physics: Probing Atmospheric Structure, Chromospheres, and Mass Loss of Evolved Stars

Maryam Saberi, Graham Harper, Jacco Th. van Loon +10

Evolved stars are among the primary sources of chemical enrichment and dust production in galaxies. During the giant phases, stars return a substantial fraction of their mass to th…

astro-ph.SR2026

A surprisingly large asymmetric ejection from Mira A

T. Khouri, W. H. T. Vlemmings, D. A. Raudales Oseguera +6

Stars with masses between roughly 1 and 8~ end their lives on the asymptotic giant branch (AGB), when intense mass loss takes place. The outflows are generally accepted to…

astro-ph.SR2025★ 2 cited

ALMA observations of CO isotopologues towards six obscured post-AGB stars

T. Khouri, D. Tafoya, W. H. T. Vlemmings +13

Low- and intermediate-mass stars evolve through the asymptotic giant branch (AGB), when an efficient mass-loss process removes a significant fraction of their initial mass. A subst…

astro-ph.SR2024★ 1 cited

An empirical view of the extended atmosphere and inner envelope of the AGB star R Doradus I. Physical model based on CO lines

T. Khouri, H. Olofsson, W. H. T. Vlemmings +6

The mass loss experienced on the asymptotic giant branch (AGB) at the end of the lives of low- and intermediate-mass stars is widely accepted to rely on radiation pressure acting o…

astro-ph.SR2021★ 12 cited

DEATHSTAR: Nearby AGB stars with the Atacama Compact Array II. CO envelope sizes and asymmetries: The S-type stars

M. Andriantsaralaza, S. Ramstedt, W. H. T. Vlemmings +13

We aim to constrain the sizes of the CO circumstellar envelopes (CSEs) of 16 S-type stars, along with an additional 7 and 4 CSEs of C-type and M-type AGB stars, respectively. We ma…

astro-ph.SR2020

DEATHSTAR: Nearby AGB stars with the Atacama Compact Array I. CO envelope sizes and asymmetries: A new hope for accurate mass-loss-rate estimates

S. Ramstedt, W. H. T. Vlemmings, L. Doan +16

This is the first publication of the DEATHSTAR project. The goal of the project is to reduce the uncertainties of observational estimates of mass-loss rates from Asymptotic Giant B…