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Visual Orbits & Alignments of Planet Hosting Binary Systems
Kathryn Lester, Steve Howell, Rachel Matson +7
Roughly half of Solar-type planet hosts have stellar companions, so understanding how these binary companions affect the formation and evolution of planets is an important componen…
Speckle Imaging of Gamma2 Velorum: The Inner Wind Possibly Resolved
Michael M. Shara, Steve B. Howell, Elise Furlan +3
Accurately quantifying the rates dM/dt at which massive stars lose mass is essential to any understanding of their evolution. All dM/dt estimates to date assume wind clumping facto…
The SN 2023ixf Progenitor in M101: II. Properties
Schuyler D. Van Dyk, Sundar Srinivasan, Jennifer E. Andrews +12
We follow our first paper with an analysis of the ensemble of the extensive pre-explosion ground- and space-based infrared observations of the red supergiant (RSG) progenitor candi…
Reconstructing the mid-infrared environment in the stellar merger remnant V838 Monocerotis
Muhammad Zain Mobeen, Tomasz Kamiński, Alexis Matter +15
V838 Mon is a stellar merger remnant that erupted in 2002 in a luminous red novae event. Although it is well studied in the optical, near infrared and submillimeter regimes, its st…
A speckle search for the outer companion of KIC 9832227
Ricardo Salinas, Steve B. Howell
We present Gemini-N/'Alopeke speckle observations of KIC 9832227, a system originally predicted to become a red nova. The diffraction limited observations do not find an outer comp…
V994 Her: A Unique Triply Eclipsing Sextuple Star System
P. Zasche, T. Borkovits, R. Jayaraman +23
We report the discovery with of a third set of eclipses from V994 Herculis (TIC 424508303), previously only known as a doubly-eclipsing system. The key implication of this d…