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- Center for Astrophysics Harvard & SmithsonianUS99 papers
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18 papers · 1 filter
The first determination of the viscosity parameter in the circumstellar disk of a Be Star
Alex C. Carciofi, Jon E. Bjorkman, Sebastián A. Otero +5
Be stars possess gaseous circumstellar decretion disks, which are well described using standard -disk theory. The Be star 28 CMa recently underwent a long outburst followed by a…
FR Cnc Revisited: Photometry, Polarimetry and Spectroscopy
A. Golovin, M. C. Galvez-Ortiz, M. Hernan-Obispo +12
Here we present the study of FR Cnc, a young, active and spotted star. We performed analysis of ASAS-3 (The All Sky Automated Survey) data for the years 2002-2008 and amended the v…
Modern observations of Hubble's first-discovered Cepheid in M31
M. Templeton, A. Henden, W. Goff +9
We present a modern ephemeris and modern light curve of the first-discovered Cepheid variable in M31, Edwin Hubble's M31-V1. Observers of the American Association of Variable Star…
Variability of Disk Emission in Pre-Main Sequence and Related Stars. II. Variability in the Gas and Dust Emission of the Herbig Fe Star SAO 206462
Michael L. Sitko, Amanda N. Day, Robin L. Kimes +16
We present thirteen epochs of near-infrared (0.8-5 micron) spectroscopic observations of the pre-transitional, "gapped" disk system in SAO 206462 (=HD 135344B). In all, six gas emi…
Is CGCS 5926 a symbiotic X-ray binary?
N. Masetti, U. Munari, A. A. Henden +3
We here report on multiwavelength (X-ray to optical) followup observations of carbon star CGCS 5926. These were motivated by the fact that this star is positionally coincident with…
New Results for the Open Cluster Bica 6 and its Associated Planetary Nebula Abell 8
David G. Turner, Joanne M. Rosvick, David D. Balam +3
The likely membership of the planetary nebula Abell 8 (PN G167.0--00.9) in the open cluster Bica 6 is confirmed by CCD spectra, UBV(RI)c photometry, and radial velocities for lumin…