392 citations · 3.2k across the 146 of their papers we have counts for
28 papers · 1 filter
Paving the Road to the Habitable Worlds Observatory with High-Resolution Imaging I: New and Archival Speckle Observations of Potential HWO Target Stars
Zachary D. Hartman, Catherine A. Clark, Michael B. Lund +15
One of the key goals of the Habitable Worlds Observatory (HWO) is to directly image about 25 potentially habitable exoplanets and determine their properties. This challenge will re…
The POKEMON Speckle Survey of Nearby M Dwarfs. III. The Stellar Multiplicity Rate of M Dwarfs within 15 pc
Catherine A. Clark, Gerard T. van Belle, Elliott P. Horch +8
M dwarfs are ubiquitous in our galaxy, and the rate at which they host stellar companions, and the properties of these companions, provides a window into the formation and evolutio…
The POKEMON Speckle Survey of Nearby M Dwarfs. II. Observations of 1125 Targets
Catherine A. Clark, Gerard T. van Belle, Elliott P. Horch +7
Stellar multiplicity is correlated with many stellar properties, yet multiplicity measurements have proven difficult for the M dwarfs -- the most common type of star in our galaxy…
Three low-mass companions around aged stars discovered by TESS
Zitao Lin, Tianjun Gan, Sharon X. Wang +42
We report the discovery of three transiting low-mass companions to aged stars: a brown dwarf (TOI-2336b) and two objects near the hydrogen burning mass limit (TOI-1608b and TOI-252…
Probable Dormant Neutron Star in a Short-Period Binary System
Tsevi Mazeh, Simchon Faigler, Dolev Bashi +24
We have identified 2XMM J125556.57+565846.4, at a distance of 600 pc, as a binary system consisting of a normal star and a probable dormant neutron star. Optical spectra exhibit a…
A Dearth of Close-In Stellar Companions to M-dwarf TESS Objects of Interest
Catherine A. Clark, Gerard T. van Belle, David R. Ciardi +5
TESS has proven to be a powerful resource for finding planets, including those that orbit the most prevalent stars in our galaxy: the M dwarfs. Identification of stellar companions…
TOI-2119: A transiting brown dwarf orbiting an active M-dwarf from NASA's TESS mission
Theron W. Carmichael, Jonathan M. Irwin, Felipe Murgas +27
We report the discovery of TOI-2119b, a transiting brown dwarf (BD) that orbits and is completely eclipsed by an active M-dwarf star. Using light curve data from the Transiting Exo…
First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances
László Molnár, Attila Bódi, András Pál +25
The TESS space telescope is collecting continuous, high-precision optical photometry of stars throughout the sky, including thousands of RR Lyrae stars. In this paper, we present r…
TOI-1278 B: SPIRou unveils a rare Brown Dwarf Companion in Close-In Orbit around an M dwarf
Étienne Artigau, Guillaume Hébrard, Charles Cadieux +39
We present the discovery of an M brown dwarf (BD) companion to the M0V star TOI-1278. The system was first identified through a percent-deep transit in TESS…
TOI-811b and TOI-852b: New transiting brown dwarfs with similar masses and very different radii and ages from the TESS mission
Theron W. Carmichael, Samuel N. Quinn, George Zhou +17
We report the discovery of two transiting brown dwarfs (BDs), TOI-811b and TOI-852b, from NASA's Transiting Exoplanet Survey Satellite mission. These two transiting BDs have simila…
Long-Period High-Amplitude Red Variables in the KELT Survey
R. Alex Arnold, M. Virginia McSwain, Joshua Pepper +8
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…
Eclipsing binaries in the open cluster Ruprecht 147. II: EPIC 219568666
Guillermo Torres, Andrew Vanderburg, Jason L. Curtis +7
We report our spectroscopic monitoring of the detached, grazing, and slightly eccentric 12-day double-lined eclipsing binary EPIC 219568666 in the old nearby open cluster Ruprecht…
MOBSTER -- III. HD 62658: a magnetic Bp star in an eclipsing binary with a non-magnetic 'identical twin'
M. E. Shultz, C. Johnston, J. Labadie-Bartz +9
HD 62658 (B9p V) is a little-studied chemically peculiar star. Light curves obtained by the Kilodegree Extremely Little Telescope (KELT) and Transiting Exoplanet Survey Satellite (…
An Extreme-mass Ratio, Short-period Eclipsing Binary Consisting of a B Dwarf Primary and a Pre-main Sequence M Star Companion Discovered by KELT
Daniel J. Stevens, George Zhou, Marshall C. Johnson +16
We present the discovery of \thisstar\ (HD 58730), a very low mass ratio () eclipsing binary (EB) identified by the Kilodegree Extremely Little Teles…
New Beta Cephei stars with KELT
Jonathan Labadie-Bartz, Gerald Handler, Joshua Pepper +9
We present the results of a search for Galactic Beta Cephei stars, which are massive pulsating stars with both pressure modes and mixed modes. Thus, these stars can serve as benchm…
Variability Properties of 4 Million Sources in the Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey
Ryan J. Oelkers, Joseph E. Rodriguez, Keivan G. Stassun +10
The Kilodegree Extremely Little Telescope (KELT) has been surveying more than of the celestial sphere for nearly a decade. While the primary science goal of the survey is th…
Identification of Young Stellar Variables with KELT for K2 II: The Upper Scorpius Association
Megan Ansdell, Ryan J. Oelkers, Joseph E. Rodriguez +13
High-precision photometry from space-based missions such as K2 and TESS enables detailed studies of young star variability. However, because space-based observing campaigns are oft…
Outbursts and Disk Variability in Be Stars
Jonathan Labadie-Bartz, S. Drew Chojnowski, David G. Whelan +16
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 infrar…
A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs
Jack B. Lubin, Joseph E. Rodriguez, George Zhou +26
We report the discovery of KELT J041621-620046, a moderately bright (J10.2) M dwarf eclipsing binary system at a distance of 393 pc. KELT J041621-620046 was first identi…
Identification of Young Stellar Variables with KELT for K2 I: Campaign 13 Taurus Dippers and Rotators
Joseph E. Rodriguez, Megan Ansdell, Ryan J. Oelkers +13
One of the most well-studied young stellar associations, Taurus-Auriga, will be observed by the extended Kepler mission, K2, in the spring of 2017. K2 Campaign 13 (C13) will be a u…
The Mysterious Dimmings of the T Tauri Star V1334 Tau
Joseph E. Rodriguez, George Zhou, Phillip A. Cargile +35
We present the discovery of two extended 0.12 mag dimming events of the weak-lined T-Tauri star V1334. The start of the first event was missed but came to an end in late 2003…
Absolute dimensions of the eccentric eclipsing binary V541 Cygni
G. Torres, C. D. McGruder, R. J. Siverd +6
We report new spectroscopic and photometric observations of the main-sequence, detached, eccentric, double-lined eclipsing binary V541 Cyg (P = 15.34 days, e = 0.468). Using these…
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%…
Photometric Variability of the Be Star Population
Jonathan Labadie-Bartz, Joshua Pepper, M. Virginia McSwain +11
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 exhib…