172 citations · 438 across the 20 of their papers we have counts for
22 papers
CO rotational line emission in very red carbon stars in the Magellanic Clouds
M. A. T. Groenewegen, A. Nanni, M. L. Boyer +11
Stars of low and intermediate initial mass lose most of their stellar mass at the end of their lives during the asymptotic giant branch (AGB) phase. Determining their gas and dust…
Equatorial Enhancement in the Dustiest OH/IR Stars in the Galactic Bulge
Steven R. Goldman, Jacco Th. van Loon, Olivia C. Jones +2
We have detected the 10 um silicate feature and the 11.3 um crystalline forsterite feature in absorption in 21 oxygen-rich AGB stars in the Galactic Bulge. The depths of the 10 um…
Imaging the innermost circumstellar environment of the red supergiant WOH G64 in the Large Magellanic Cloud
K. Ohnaka, K. -H. Hofmann, G. Weigelt +3
Significant mass loss in the red supergiant (RSG) phase has great influence on the evolution of massive stars and their final fate as supernovae. We present near-infrared interfero…
A MultiWavelength Study of the Symbiotic Mira HM Sge with SOFIA and HST
Steven Goldman, Ravi Sankrit, Edward Montiel +3
We have targeted the dusty symbiotic mira system HM Sge with four instruments from the IR to the UV. We have used these observations along with archival observations to study how t…
A Panchromatic Study of Massive Stars in the Extremely Metal-Poor Local Group Dwarf Galaxy Leo A
Maude Gull, Daniel R. Weisz, Peter Senchyna +17
We characterize massive stars (M>8 M_sun) in the nearby (D~0.8 Mpc) extremely metal-poor (Z~5% Z_sun) galaxy Leo A using Hubble Space Telescope ultra-violet (UV), optical, and near…
A Census of Thermally-Pulsing AGB stars in the Andromeda Galaxy and a First Estimate of their Contribution to the Global Dust Budget
Steven R. Goldman, Martha L. Boyer, Julianne Dalcanton +5
We present a near-complete catalog of the metal-rich population of Thermally-Pulsing Asymptotic Giant Branch stars in the northwest quadrant of M31. This metal-rich sample compleme…
SOFIA/FORCAST Monitoring of the Dust Emission from R Aqr: Start of the Eclipse
Ravi Sankrit, Eric Omelian, Uma Gorti +3
We present mid-infrared spectra from our continued monitoring of R Aquarii, the nearest symbiotic Mira, using the Stratospheric Observatory for Infrared Astronomy (SOFIA). New phot…
The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope
P. Scicluna, F. Kemper, I. McDonald +89
The Nearby Evolved Stars Survey (NESS) is a volume-complete sample of 850 Galactic evolved stars within 3\,kpc at (sub-)mm wavelengths, observed in the CO (21) and…
Infrared variable stars in the compact elliptical galaxy M32
O. C. Jones, C. Nally, M. J. Sharp +7
Variable stars in the compact elliptical galaxy M32 are identified, using three epochs of photometry from the Spitzer Space Telescope at 3.6 and 4.5 m, separated by 32 to 381 da…
The Dusty Evolved Star Kit (DESK): A Python package for fitting the Spectral Energy Distribution of Evolved Stars
Steven R. Goldman
One of the few ways that we can understand the environment around dusty stars and how much material they contribute back to the Universe, is by fitting their brightness at differen…
PHAT XX. AGB stars and other cool giants in M31 star clusters
Leo Girardi, Martha L. Boyer, L. Clifton Johnson +20
The presence of AGB stars in clusters provides key constraints for stellar models, as has been demonstrated with historical data from the Magellanic Clouds. In this work, we look f…
Studies of Evolved Stars in the Next Decade: EAO Submillimetre Futures White Paper Series, 2019
Peter Scicluna, Hiroko Shinnaga, Jonathan Marshall +8
This white paper discusses recent progress in the field of evolved stars, primarily highlighting the contributions of the James Clerk Maxwell Telescope. It discusses the ongoing pr…
Asymptotic Giant Branch Stars in the Nearby Dwarf Galaxy Leo P
Steven R. Goldman, Martha L. Boyer, Kristen B. McQuinn +7
We have conducted a highly sensitive census of the evolved-star population in the metal-poor dwarf galaxy Leo P and detected four asymptotic giant branch (AGB) star candidates. Leo…
The Nearby Evolved Stars Survey: I. JCMT/SCUBA-2 Sub-millimetre detection of the detached shell of U Antliae
Thavisha E. Dharmawardena, Francisca Kemper, Sundar Srinivasan +24
We present the highest resolution single-dish submillimetre observations of the detached shell source U Antliae to date. The observations were obtained at $450~\micron$ and $850~\m…
The mass-loss, expansion velocities and dust production rates of carbon stars in the Magellanic Clouds
Ambra Nanni, Martin A. T. Groenewegen, Bernhard Aringer +5
The properties of carbon stars in the Magellanic Clouds (MCs) and their total dust production rates are predicted by fitting their spectral energy distributions (SED) over pre-comp…
An Infrared Census Of Dust In Nearby Galaxies With Spitzer (DUSTiNGS): V. The Period-luminosity Relation For Dusty Metal-Poor AGB Stars
Steven R. Goldman, Martha L. Boyer, Kristen B. McQuinn +10
The survey for DUST In Nearby Galaxies with Spitzer (DUSTiNGS) has identified hundreds of candidate dust-producing Asymptotic Giant Branch (AGB) stars in several nearby metal-poor…
SPIRITS Catalog of Infrared Variables: Identification of Extremely Luminous Long Period Variables
V. R. Karambelkar, S. M. Adams, P. A. Whitelock +11
We present a catalog of 417 luminous infrared variable stars with periods exceeding 250 days. These were identified in 20 nearby galaxies by the ongoing SPIRITS survey with the Spi…
A dearth of OH/IR stars in the Small Magellanic Cloud
Steven R. Goldman, Jacco Th. van Loon, José F. Gómez +7
We present the results of targeted observations and a survey of 1612-, 1665-, and 1667-MHz circumstellar OH maser emission from asymptotic giant branch (AGB) stars and red supergia…
Astrometry of OH/IR stars using 1612 MHz hydroxyl masers. I. Annual parallaxes of WX Psc and OH138.0+7.2
G. Orosz, H. Imai, R. Dodson +9
We report on the measurement of the trigonometric parallaxes of 1612 MHz hydroxyl masers around two asymptotic giant branch stars, WX Psc and OH138.0+7.2, using the NRAO Very Long…
The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicity
Steven R. Goldman, Jacco Th. van Loon, Albert A. Zijlstra +8
We present the results of our survey of 1612 MHz circumstellar OH maser emission from asymptotic giant branch (AGB) stars and red supergiants (RSGs) in the Large Magellanic Cloud.…
The ALMA detection of CO rotational line emission in AGB stars in the Large Magellanic Cloud
M. A. T. Groenewegen, W. H. T. Vlemmings, P. Marigo +21
Context: Low- and intermediate-mass stars lose most of their stellar mass at the end of their lives on the asymptotic giant branch (AGB). Determining gas and dust mass-loss rates (…
ALMA reveals sunburn: CO dissociation around AGB stars in the globular cluster 47 Tucanae
Iain McDonald, Albert A. Zijlstra, Eric Lagadec +15
ALMA observations show a non-detection of carbon monoxide around the four most luminous asymptotic giant branch (AGB) stars in the globular cluster 47 Tucanae. Stellar evolution mo…