5 papers
Two Be or Not Two Be: A New Companion detection for HD 52244 using HST/FGS
Keefe J. Kamp, Saida M. Caballero-Nieves, Edmund P. Nelan +3
In this paper we present a newly detected companion to the Be star, HD 52244 (B2IVnpe), using the Fine Guidance Sensors (FGSs) on the Hubble Space Telescope (HST). In fall 2021, HS…
The Birth of Be Star Disks II. A High-Resolution Spectroscopic Campaign and TESS Observations of an Outburst of the Classical Be star λ Pavonis
Sola S. Nova, Noel D. Richardson, Jonathan Labadie-Bartz +1
Be stars are rapidly-rotating B stars that have shown emission lines originating in a circumstellar disk. The mechanisms that lead to disk formation and dissipation are not known a…
TESS Light Curve of the Interacting Binary W Serpentis
Douglas R. Gies, Katherine A. Shepard, Aman Kar +1
The unusual light curve of the massive eclipsing binary W Ser was recently observed with high S/N and fast cadence by the NASA TESS mission. The TESS light curve records two eclips…
The birth of Be star disks I. From localized ejection to circularization
J. Labadie-Bartz, A. C. Carciofi, A. C. Rubio +35
Classical Be stars are well known to eject mass, but the details governing the initial distribution and evolution of this matter into a disk are poorly constrained by observations.…
An Investigation into the Variability of Luminous Blue Variable Stars with TESS
Becca Spejcher, Noel D. Richardson, Herbert Pablo +3
Luminous Blue Variables (LBVs) are enigmatic, evolved, massive stars. Their variability has been observed to be episodic with large eruptions, along with variations on time-scales…