114 citations · 553 across the 16 of their papers we have counts for
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Rotation Periods for Stars in Open Cluster NGC 6819 From Kepler IRIS Light Curves
Sabina Sagynbayeva, Isabel L. Colman, Will M. Farr
We present an updated catalog of stellar rotation periods for the 2.5 Gyr open cluster NGC 6819 using the Kepler IRIS light curves from superstamp data. Our analysis uses Gaussian…
Measuring Long Stellar Rotation Periods (>10 days) from TESS FFI Light Curves is Possible: An Investigation Using TESS and ZTF
Soichiro Hattori, Ruth Angus, Daniel Foreman-Mackey +3
The rotation period of a star is an important quantity that provides insight into its structure and state. For stars with surface features like starspots, their periods can be infe…
Evidence of Truly Young high- Dwarf Stars
Yuxi Lu, Isabel L. Colman, Maryum Sayeed +14
The existence of high- stars with inferred ages < 6 Gyr has been confirmed recently with large spectroscopic and photometric surveys. However, stellar mergers or binary interact…
Methods for the detection of stellar rotation periods in individual TESS sectors and results from the Prime mission
Isabel L. Colman, Ruth Angus, Trevor David +3
For ongoing studies of the role of rotation in stellar evolution, we require large catalogs of rotation periods for testing and refining gyrochronology. While there is a wealth of…
Discovery of post-mass-transfer helium-burning red giants using asteroseismology
Yaguang Li, Timothy R. Bedding, Simon J. Murphy +14
A star expands to become a red giant when it has fused all the hydrogen in its core into helium. If the star is in a binary system, its envelope can overflow onto its companion or…
Further Evidence of Modified Spin-down in Sun-like Stars: Pileups in the Temperature-Period Distribution
Trevor J. David, Ruth Angus, Jason L. Curtis +5
We combine stellar surface rotation periods determined from NASA's Kepler mission with spectroscopic temperatures to demonstrate the existence of pileups at the long-period and sho…
The Kepler IRIS Catalog: Image subtraction light curves for 9,150 stars in and around the open clusters NGC 6791 and NGC 6819
Isabel L. Colman, Timothy R. Bedding, Daniel Huber +1
The four-year Kepler mission collected long cadence images of the open clusters NGC 6791 and NGC 6819, known as "superstamps." Each superstamp region is a 200-pixel square that cap…
A binary with a ~Scuti star and an oscillating red giant: orbit and asteroseismology of KIC9773821
Simon J Murphy, Tanda Li, Sanjay Sekaran +8
We study the Scuti -- red giant binary KIC9773821, the first double-pulsator binary of its kind. It was observed by \textit{Kepler} during its four-year mission. Our aims are t…
The effect of tides on near-core rotation: analysis of 35 Kepler Doradus stars in eclipsing and spectroscopic binaries
Gang Li, Zhao Guo, Jim Fuller +4
We systematically searched for gravity- and Rossby-mode period spacing patterns in Kepler eclipsing binaries with Doradus pulsators. These stars provide an excellent opportunit…
Very regular high-frequency pulsation modes in young intermediate-mass stars
Timothy R. Bedding, Simon J. Murphy, Daniel R. Hey +33
Asteroseismology is a powerful tool for probing the internal structures of stars by using their natural pulsation frequencies. It relies on identifying sequences of pulsation modes…
A Search for Red Giant Solar-like Oscillations in All Kepler Data
Marc Hon, Dennis Stello, Rafael A. García +4
The recently published Kepler mission Data Release 25 (DR25) reported on ~197,000 targets observed during the mission. Despite this, no wide search for red giants showing solar-lik…
Evidence for compact binary systems around Kepler red giants
Isabel L. Colman, Daniel Huber, Timothy R. Bedding +9
We present an analysis of 168 oscillating red giants from NASA's mission that exhibit anomalous peaks in their Fourier amplitude spectra. These peaks result from ellipsoid…
Echelle diagrams and period spacings of g modes in gamma Doradus stars from four years of Kepler observations
Timothy R. Bedding, Simon J. Murphy, Isabel L. Colman +1
We use photometry from the Kepler Mission to study oscillations in gamma Doradus stars. Some stars show remarkably clear sequences of g modes and we use period echelle diagrams to…
K 1-6: an asymmetric planetary nebula with a binary central star
David J. Frew, Jeff Stanger, Michael Fitzgerald +16
We present new imaging data and archival multiwavelength observations of the little studied emission nebula K 1-6 and its central star. Narrow-band images in H-alpha (+ [NII]) and…