Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Shen, Ken"'
Autor:
El-Badry, Kareem, Shen, Ken J., Chandra, Vedant, Bauer, Evan, Fuller, Jim, Strader, Jay, Chomiuk, Laura, Naidu, Rohan, Caiazzo, Ilaria, Rodriguez, Antonio C., Nagarajan, Pranav, Yamaguchi, Natsuko, Vanderbosch, Zachary P., Roulston, Benjamin R., van Roestel, Jan, Gänsicke, Boris, Han, Jiwon Jesse, Burdge, Kevin B., Filippenko, Alexei V., Brink, Thomas G., Zheng, WeiKang
We report a spectroscopic search for hypervelocity white dwarfs (WDs) that are runaways from Type Ia supernovae (SNe Ia) and related thermonuclear explosions. Candidates are selected from Gaia data with high tangential velocities and blue colors. We
Externí odkaz:
http://arxiv.org/abs/2306.03914
Autor:
Shields, Joshua V., Kerzendorf, Wolfgang, Hosek Jr., Matthew W., Shen, Ken J., Rest, Armin, Do, Tuan, Lu, Jessica R., Fullard, Andrew G., Strampelli, Giovanni, Zenteno, Alfredo
Type Ia Supernovae (SNe Ia) are securely understood to come from the thermonuclear explosion of a white dwarf as a result of binary interaction, but the nature of that binary interaction and the secondary object is uncertain. Recently, a double white
Externí odkaz:
http://arxiv.org/abs/2206.04095
Autor:
Hoadley, Keri, Martin, Christopher, Metzger, Brian D., Seibert, Mark, McWilliam, Andrew, Shen, Ken J., Neill, James D., Stefansson, Gudmundur, Monson, Andrew, Schaefer, Bradley E.
Stellar mergers are a brief-lived but common phase in the evolution of binary star systems. Among the many astrophysical implications of these events include the creation of atypical stars (e.g. magnetic stars, blue stragglers, rapid rotators), inter
Externí odkaz:
http://arxiv.org/abs/2011.09589
Publikováno v:
ApJ 891 (2020) 85
Manganese (Mn) abundances are sensitive probes of the progenitors of Type Ia supernovae (SNe). In this work, we present a catalog of manganese abundances in dwarf spheroidal satellites of the Milky Way, measured using medium-resolution spectroscopy.
Externí odkaz:
http://arxiv.org/abs/2001.01716
A new class of faint, spectroscopically peculiar transients has emerged in the last decade. We term these events "calcium-strong transients" (CaSTs) because of their atypically high calcium-to-oxygen nebular line ratios. Previous studies have struggl
Externí odkaz:
http://arxiv.org/abs/1908.08056
Autor:
Kirby, Evan N., Xie, Justin L., Guo, Rachel, Reyes, Mithi A. C. de los, Bergemann, Maria, Kovalev, Mikhail, Shen, Ken J., Piro, Anthony L., McWilliam, Andrew
There is no consensus on the progenitors of Type Ia supernovae (SNe Ia) despite their importance for cosmology and chemical evolution. We address this question by using our previously published catalogs of Mg, Si, Ca, Cr, Fe, Co, and Ni abundances in
Externí odkaz:
http://arxiv.org/abs/1906.10126
Autor:
Kelly, Patrick L., Fox, Ori D., Filippenko, Alexei V., Cenko, S. Bradley, Prato, Lisa, Schaefer, Gail, Shen, Ken J., Zheng, WeiKang, Graham, Melissa L., Tucker, Brad E.
We constrain the properties of the progenitor system of the highly reddened Type Ia supernova (SN) 2014J in Messier 82 (M82; d ~ 3.5 Mpc). We determine the SN location using Keck-II K-band adaptive optics images, and we find no evidence for flux from
Externí odkaz:
http://arxiv.org/abs/1403.4250