113 citations · 401 across the 14 of their papers we have counts for
7 papers · 1 filter
Fading into darkness: A weak mass ejection and low-efficiency fallback accompanying black hole formation in M31-2014-DS1
Kishalay De, Morgan MacLeod, Jacob E. Jencson +10
Stellar-mass black holes (BHs) can form from the near-complete collapse of massive stars, causing them to abruptly disappear. The star M31-2014-DS1 in the Andromeda galaxy was repo…
The Evolution of Binaries Embedded Within Common Envelopes
Alejandra Rosselli-Calderon, Ricardo Yarza, Ariadna Murguia-Berthier +5
Triple stellar systems allow us to study stellar processes that cannot be attained in binary stars. The evolutionary phases in which the stellar members undergo mass exchanges can…
Left Ringing: Betelgeuse Illuminates the Connection Between Convective outbursts, Mode switching, and Mass Ejection in Red Supergiants
Morgan MacLeod, Andrea Antoni, Caroline D. Huang +2
Betelgeuse, the nearest red supergiant, dimmed to an unprecedented level in early 2020. The star emerged from this Great Dimming episode with its typical, roughly 400-day pulsation…
Hydrodynamics and survivability during post-main-sequence planetary engulfment
Ricardo Yarza, Naela Razo Lopez, Ariadna Murguia-Berthier +6
The engulfment of substellar bodies (SBs, such as brown dwarfs and planets) by giant stars is a possible explanation for rapidly rotating giants, lithium-rich giants, and the prese…
Common Envelope Wind Tunnel: The Effects of Binary Mass Ratio and Implications for the Accretion-Driven Growth of LIGO Binary Black Holes
Soumi De, Morgan MacLeod, Rosa Wallace Everson +3
We present three-dimensional local hydrodynamic simulations of flows around objects embedded within stellar envelopes using a "wind tunnel" formalism. Our simulations model the com…
Accretion Disk Assembly During Common Envelope Evolution: Implications for Feedback and LIGO Binary Black Hole Formation
Ariadna Murguia-Berthier, Morgan MacLeod, Enrico Ramirez-Ruiz +2
During a common envelope episode in a binary system, the engulfed companion spirals to tighter orbital separations under the influence of drag from the surrounding envelope materia…
Common Envelope Wind Tunnel: Coefficients of Drag and Accretion in a Simplified Context for Studying Flows Around Objects Embedded Within Stellar Envelopes
Morgan MacLeod, Andrea Antoni, Ariadna Murgia-Berthier +2
This paper examines the properties of flows around objects embedded within common envelopes in the simplified context of a "wind tunnel." We establish characteristic relationships…