247 citations · 1.3k across the 49 of their papers we have counts for
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The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic
Hugh P. Osborn, Matthew Kenworthy, Joseph E. Rodriguez +71
PDS 110 is a young disk-hosting star in the Orion OB1A association. Two dimming events of similar depth and duration were seen in 2008 (WASP) and 2011 (KELT), consistent with an ob…
The spectral Petersen diagram as a new tool to map pulsation modes in variable stars
Michael Hippke
Additional pulsation modes have been discovered in many Cepheids, RR Lyrae, and other variable stars. Fourier transforms are used to find, fit and subtract the main pulsation perio…
The year-long flux variations in Boyajian's star are asymmetric or aperiodic
Michael Hippke, Daniel Angerhausen
We combine and calibrate publicly available data for Boyajian's star including photometry from ASAS (SN, V, I), Kepler, Gaia, SuperWASP, and citizen scientist observations (AAVSO,…
A first view with GAIA on KIC 8462852 - distance estimates and a comparison to other F stars
Michael Hippke, Daniel Angerhausen
Distance estimates from Gaia parallax and expected luminosities are compared for KIC 8462852. Gaia DR1 yields a parallax of mas, that is a distance of $391.4\substack{…
Sonneberg plate photometry for Boyajian's Star in two passbands
Michael Hippke, Peter Kroll, Frank Matthei +10
The F3 main sequence star KIC 8462852 (Boyajian's Star) showed deep (up to 20%) day-long brightness dips of unknown cause during the 4 years of the Kepler mission. A 0.164 mag (16%…
The Stability of F-star Brightness on Century Timescales
Michael B. Lund, Joshua Pepper, Keivan G. Stassun +2
The century-long photometric record of the DASCH project provides a unique window into the variability of stars normally considered to be photometrically inactive. In this paper, w…
Dippers and Dusty Disks Edges: A Unified Model
Eva H. L. Bodman, Alice C. Quillen, Megan Ansdell +6
We revisit the nature of large dips in flux from extinction by dusty circumstellar material that is observed by Kepler for many young stars in the Upper Sco and Oph star format…
Simple nonlinear models suggest variable star universality
John F. Lindner, Vivek Kohar, Behnam Kia +3
Dramatically improved data from observatories like the CoRoT and Kepler spacecraft have recently facilitated nonlinear time series analysis and phenomenological modeling of variabl…
Pulsation period variations in the RRc Lyrae star KIC 5520878
Michael Hippke, John G. Learned, A. Zee +5
Learned et. al. proposed that a sufficiently advanced extra-terrestrial civilization may tickle Cepheid and RR Lyrae variable stars with a neutrino beam at the right time, thus cau…
Square root two period ratios in Cepheid and RR Lyrae variable stars
Michael Hippke, John G. Learned, A. Zee
We document the presence of a few Cepheid and RR Lyrae variable stars with previously unrecognized characteristics. These stars exhibit the property of a period ratio of main pulsa…