201 citations
- Northwestern UniversityUS9 papers
- California Institute of TechnologyUS6 papers
- University of AlbertaCA6 papers
- Carnegie Institution for ScienceUS4 papers
- Carnegie ObservatoriesUS4 papers
- Rochester Institute of TechnologyUS4 papers
- Chinese Academy of SciencesCN2 papers
- University of AmsterdamNL2 papers
- University of California, BerkeleyUS2 papers
- University of EdinburghGB2 papers
- University of Nevada, Las VegasUS2 papers
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6 papers · 1 filter
Correlating Changes in Spot Filling Factors with Stellar Rotation: The Case of LkCa 4
Facundo Pérez Paolino, Jeffrey S. Bary, Michael S. Petersen +4
We present a multi-epoch spectroscopic study of LkCa 4, a heavily spotted non-accreting T Tauri star. Using SpeX at NASA's Infrared Telescope Facility (IRTF), 12 spectra were colle…
Simulating a stellar contact binary merger -- I. Stellar models
Roger W. M. Hatfull, Natalia Ivanova, James C. Lombardi
We study the initial conditions of a common envelope (CE) event resulting in a stellar merger. A merger's dynamics could be understood through its light curve, but no synthetic lig…
Stability and Coalescence of Massive Twin Binaries
Jason A. Hwang, James C. Lombardi, Frederic A. Rasio +1
Massive stars are usually found in binaries, and binaries with periods less than 10 days may have a preference for near equal component masses. In this paper we investigate the evo…
Recombination energy in double white dwarf formation
Jose L. A. Nandez, Natalia Ivanova, James C. Lombardi
In this Letter we investigate the role of recombination energy during a common envelope event. We confirm that taking this energy into account helps to avoid the formation of the c…
V1309 SCO - Understanding a merger
Jose L. A. Nandez, Natalia Ivanova, James Lombardi
One of the two outcomes of a common envelope event is a merger of the two stars. To date, the best known case of a binary merger is the V1309 Sco outburst, where the orbital period…
Twin Binaries: Studies of Stability, Mass Transfer, and Coalescence
James C. Lombardi, William Holtzman, Katherine L. Dooley +3
Motivated by suggestions that binaries with almost equal-mass components ("twins") play an important role in the formation of double neutron stars and may be rather abundant among…