253 citations · 1.4k across the 47 of their papers we have counts for
6 papers · 1 filter
A Multiwavelength Study of the Massive Colliding Wind Binary WR 20a: A Possible Progenitor for Fast-Spinning LIGO Binary Black Hole Mergers
Grace M. Olivier, Laura A. Lopez, Katie Auchettl +7
WR 20a is the most massive close-in binary known in our Galaxy. It is composed of two 80 M Wolf-Rayet stars with a short period of 3.7 days in the open cl…
A Survey for C II Emission-Line Stars in the Large Magellanic Cloud. II. Final Results and the Origin of C II Emission in [WC] Spectra
Bruce Margon, Nidia Morrell, Philip Massey +2
We present the final results of an imaging and spectroscopic search for stars in the Large Magellanic Cloud (LMC) with C II 7231, 7236 emission lines. The goal is to identify and s…
The Time-Averaged Mass-Loss Rates of Red Supergiants As Revealed by their Luminosity Functions in M31 and M33
Philip Massey, Kathryn F. Neugent, Sylvia Ekstrom +2
Mass-loss in red supergiants (RSGs) is generally recognized to be episodic, but mass-loss prescriptions fail to reflect this. Evolutionary models show that the total amount of mass…
Cool, Luminous, and Highly Variable Stars in the Magellanic Clouds. II: Spectroscopic and Environmental Analysis of Thorne-Żytkow Object and Super-AGB Star Candidates
Anna J. G. O'Grady, Maria R. Drout, B. M. Gaensler +9
In previous work we identified a population of 38 cool and luminous variable stars in the Magellanic Clouds and examined 11 in detail in order to classify them as either Thorne-Żyt…
The Properties of Fast Yellow Pulsating Supergiants: FYPS Point the Way to Missing Red Supergiants
Trevor Z. Dorn-Wallenstein, Emily M. Levesque, James R. A. Davenport +3
Fast yellow pulsating supergiants (FYPS) are a recently-discovered class of evolved massive pulsator. As candidate post-red supergiant objects, and one of the few classes of pulsat…
WO-Type Wolf-Rayet Stars: the Last Hurrah of Massive Star Evolution
Erin Aadland, Philip Massey, D. John Hillier +3
Are WO-type Wolf Rayet (WR) stars in the final stage of massive star evolution before core-collapse? Although WC- and WO-type WRs have very similar spectra, WOs show a much stronge…