Zobrazeno 1 - 10
of 114
pro vyhledávání: '"McSwain, M. Virginia"'
Alpha$^2$ Canum Venaticorum (AM CVn) is a strongly magnetic star with peculiar chemical signatures and periodic variability that have been long attributed to the diffusion of magnetic elements through the photosphere, leading to chemical spots across
Externí odkaz:
http://arxiv.org/abs/2207.11151
Autor:
Arnold, R. Alex, McSwain, M. Virginia, Pepper, Joshua, Whitelock, Patricia A., Hernitschek, Nina, James, David J., Kuhn, Rudolf B., Lund, Michael B., Rodriguez, Joseph E., Siverd, Robert J., Stassun, Keivan G.
We present a sample of 4,132 Mira-like variables (red variables with long periods and high amplitudes) in the Kilodegree Extremely Little Telescope (KELT) survey. Of these, 814 are new detections. We used 2MASS colors to identify candidate asymptotic
Externí odkaz:
http://arxiv.org/abs/2001.06498
Autor:
Hanes, Richard J., Waskie, Steven, Labadie-Bartz, Jonathan M., Wall, Audrey, Boyer, Amber, McSwain, M. Virginia
The field of asteroseismology has enjoyed a large swath of data coming from recent missions (e.g., CoRoT, Kepler, K2). This wealth of new data has allowed the field to expand beyond the previous limitation of a few extremely bright and evolved stars.
Externí odkaz:
http://arxiv.org/abs/1902.09585
The Carina Nebula is an active star forming region in the southern sky that is of particular interest due to the presence of a large number of massive stars in a wide array of evolutionary stages. Here we present the results of the spectroscopic anal
Externí odkaz:
http://arxiv.org/abs/1803.05029
Autor:
Labadie-Bartz, Jonathan, Chojnowski, S. Drew, Whelan, David G., Pepper, Joshua, McSwain, M. Virginia, Fernandes, Marcelo Borges, Wisniewski, John P., Stringfellow, Guy S., Carciofi, Alex C., Siverd, Robert J., Glazier, Amy L., Anderson, Sophie G., Caravello, Anthoni J., Stassun, Keivan G., Lund, Michael B., Stevens, Daniel J., Rodriguez, Joseph E., James, David J., Kuhn, Rudolf B.
Publikováno v:
Labadie-Bartz, Jonathan et al. 2018 AJ 155 53
In order to study the growth and evolution of circumstellar disks around classical Be stars, we analyze optical time-series photometry from the KELT survey with simultaneous infrared and visible spectroscopy from the APOGEE survey and BeSS database f
Externí odkaz:
http://arxiv.org/abs/1708.02594
The Carina star-forming region is one of the largest in the Galaxy, and its massive star population is still being unveiled. The large number of stars combined with high, and highly variable, interstellar extinction makes it inherently difficult to f
Externí odkaz:
http://arxiv.org/abs/1611.01405
Autor:
Labadie-Bartz, Jonathan, Pepper, Joshua, McSwain, M. Virginia, Bjorkman, J. E., Bjorkman, K. S., Lund, Michael B., Rodriguez, Joseph E., Stassun, Keivan G., Stevens, Daniel J., Gaudi, B. Scott, James, David J., Kuhn, Rudolf B., Siverd, Robert J., Beatty, Thomas G.
Be stars have generally been characterized by the emission lines in their spectra, and especially the time variability of those spectroscopic features. They are known to also exhibit photometric variability at multiple timescales, but have not been b
Externí odkaz:
http://arxiv.org/abs/1609.08449
We report an updated analysis of the gamma-ray source AGL J2241+4454 that was detected as a brief two-day flare in 2010 by the AGILE satellite. The high-energy emission of AGL J2241+4454 has been attributed to the binary system HD 215227, which consi
Externí odkaz:
http://arxiv.org/abs/1502.07385
Autor:
McSwain, M. Virginia, Chernyakova, Masha, Malishev, Denis, De Becker, Michael, Williams, Stephen
A rare group of high mass X-ray binaries (HMXBs) are known that also exhibit MeV, GeV, and/or TeV emission ("gamma-ray binaries"). Expanding the sample of gamma-ray binaries and identifying unknown Fermi sources are currently of great interest to the
Externí odkaz:
http://arxiv.org/abs/1303.2018
We present a study of the B and Be star populations of the Double Cluster h and chi Persei. Blue optical spectroscopy is used to first measure projected rotational velocity, V sin i, effective surface temperature, T_eff, and surface gravity, log g, f
Externí odkaz:
http://arxiv.org/abs/1209.5771