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MKT J170456.2-482100: the first transient discovered by MeerKAT
L. N. Driessen, I. McDonald, D. A. H. Buckley +19
We report the discovery of the first transient with MeerKAT, MKT J170456.2482100, discovered in ThunderKAT images of the low mass X-ray binary GX3394. MKT J170456.2482100…
Stellar Pulsation and the Production of Dust and Molecules in Galactic Carbon Stars
Kathleen E. Kraemer, G. C. Sloan, Luke D. Keller +3
New infrared spectra of 33 Galactic carbon stars from FORCAST on SOFIA reveal strong connections between stellar pulsations and the dust and molecular chemistry in their circumstel…
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 onset of the AGB wind tied to a transition between sequences in the period-luminosity diagram
Iain McDonald, Michele Trabucchi
We link the onset of pulsation-enhanced, dust-driven winds from asymptotic giant branch (AGB) stars in the Magellanic Clouds to the star's transition between period--luminosity seq…
Circumstellar CO in metal-poor stellar winds: the highly irradiated globular cluster star 47 Tucanae V3
Iain McDonald, Martha L. Boyer, Martin A. T. Groenewegen +4
We report the first detection of circumstellar CO in a globular cluster. Observations with ALMA have detected the CO J=3-2 and SiO v=1 J=8-7 transitions at 345 and 344 GHz, respect…