423 citations · 792 across the 18 of their papers we have counts for
8 papers · 1 filter
Report IAU Comm. 42, Close Binary Stars
Slavek M. Rucinski, Ignasi Ribas, Colin D. Scarfe +5
Brief summaries are given about (1) close binary research from the perspective of the Bibliography of Close Binaries, (2) low-mass binaries and model discrepancies, (3) W UMa-type…
Three-Dimensional Doppler Images of the Disk-like and Stream-like States of U Coronae Borealis
Michail Agafonov, Olga Sharova, Mercedes Richards
The 3D Radioastronomical Approach to Doppler tomography has been used to study the H emission sources in U Coronae Borealis. These 3D tomograms provide greater resolution than t…
Revealing the Nature of Algol Disks through Optical and UV Spectroscopy, Synthetic Spectra, and Tomography of TT Hydrae
Brendan Miller, Jan Budaj, Mercedes Richards +2
We have developed a systematic procedure to study the disks in Algol-type binaries using spectroscopic analysis, synthetic spectra, and tomography. We analyzed 119 H-alpha spectra…
Long-term Variability in the Length of the Solar Cycle
Michael L. Rogers, Mercedes T. Richards, Donald St. P. Richards
Detailed models of the solar cycle require information about the starting time and rise time as well as the shape and amplitude of the cycle. However, none of these models includes…
Nova V4743 Sagittarii 2002: An Intermediate Polar Candidate
Tae W. Kang, Alon Retter, Alex Liu +1
We present the results of 11 nights of CCD unfiltered photometry of V4743 Sgr (Nova Sgr 2002 # 3) from 2003 and 2005. We find two periods of 0.2799 d ~ 6.7 h and 0.01642 d ~ 24 min…
Detection of orbital and superhump periods in Nova V2574 Ophiuchi (2004)
Tae W. Kang, Alon Retter, Alex Liu +1
We present the results of 37 nights of CCD unfiltered photometry of nova V2574 Oph (2004) from 2004 and 2005. We find two periods of 0.14164 d (~3.40 h) and 0.14773 d (~3.55 h) in…
A Study of Synthetic and Observed H_alpha Spectra of TT Hydrae
Jan Budaj, Mercedes T. Richards, Brendan Miller
The formation and properties of accretion discs and circumstellar material in Algol-type systems is not very well understood. In order to study the underlying physics of these stru…
Evidence for Superhumps in the Radio Light Curve of Algol and a New Model for Magnetic Activity in Algol Systems
Alon Retter, Mercedes T. Richards, Kinwah Wu
Extensive radio data of two Algol systems and two RS CVn binaries were re-analyzed. We found evidence for a new periodicity that we interpret as a superhump in Algol, in which it m…