5.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- California Institute of TechnologyUS1.8k papers
- University of Colorado BoulderUS1.8k papers
- The Ohio State UniversityUS1.7k papers
- Massachusetts Institute of TechnologyUS1.7k papers
- University of Tennessee at KnoxvilleUS1.7k papers
- Princeton UniversityUS1.6k papers
- Centre National de la Recherche ScientifiqueFR1.6k papers
- University of Maryland, College ParkUS1.6k papers
- University of California, RiversideUS1.6k papers
- University of FloridaUS1.5k papers
- University of Wisconsin–MadisonUS1.5k papers
- Cornell UniversityUS1.5k papers
30 papers · 2 filters
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…
V473 Lyr, a modulated, period-doubled Cepheid, and U TrA, a double-mode Cepheid observed by MOST
L. Molnár, A. Derekas, R. Szabó +36
Space-based photometric measurements first revealed low-amplitude irregularities in the pulsations of Cepheid stars, but their origins and how commonly they occur remain uncertain.…
Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs II: Properties of 11 T-dwarfs
Michael R. Line, Mark S. Marley, Michael C. Liu +7
Brown dwarf spectra are rich in information revealing of the chemical and physical processes operating in their atmospheres. We apply a recently developed atmospheric retrieval too…
Chemical Abundances of M-dwarfs from the APOGEE Survey. I. The Exoplanet Hosting Stars Kepler-138 and Kepler-186
Diogo Souto, Katia Cunha, D. A. Garcia-Hernandez +18
We report the first detailed chemical abundance analysis of the exoplanet-hosting M-dwarf stars Kepler-138 and Kepler-186 from the analysis of high-resolution ( 22,500) $…
Gaia Assorted Mass Binaries Long Excluded from SLoWPoKES (GAMBLES): Identifying Ultra-Wide Binary Pairs with Components of Diverse Mass
Ryan J. Oelkers, Keivan G. Stassun, Saurav Dhital
The formation and evolution of binary star systems still remain key questions in modern astronomy. Wide binary pairs (separations AU) are particularly intriguing because th…
SCExAO and GPI Band Photometry and Integral Field Spectroscopy of the Young Brown Dwarf Companion to HD 1160
Eugenio V. Garcia, Thayne Currie, Olivier Guyon +51
We present high signal-to-noise ratio, precise photometry and band (\gpiwave~m) spectroscopy of HD 1160 B, a young substellar companion discovered from the Gemini NICI…
Evidence for a systematic offset of 0.25 mas in the Gaia DR1 parallaxes
Keivan G. Stassun, Guillermo Torres
We test the parallaxes reported in the Gaia first data release using the sample of eclipsing binaries with accurate, empirical distances from Stassun \& Torres (2016). We find an a…
The canonical Luminous Blue Variable AG Car and its neighbor Hen 3-519 are much closer than previously assumed
Nathan Smith, Keivan G. Stassun
The strong mass loss of Luminous Blue Variables (LBVs) is thought to play a critical role in massive-star evolution, but their place in the evolutionary sequence remains debated. A…
A Catalog of Calibrator Stars for Next-Generation Optical Interferometers
Samuel J. Swihart, E. Victor Garcia, Keivan G. Stassun +3
Benchmark stars with known angular diameters are key to calibrating interferometric observations. With the advent of optical interferometry, there is a need for suitably bright, we…
Eclipsing Binary Stars as Benchmarks for Trigonometric Parallaxes in the Gaia Era
Keivan G. Stassun, Guillermo Torres
We present fits to the broadband photometric spectral energy distributions (SEDs) of 158 eclipsing binaries (EBs) in the Tycho-2 catalog. These EBs were selected because they have…
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…
Physics Of Eclipsing Binaries. II. Towards the Increased Model Fidelity
Andrej Prša, Kyle E. Conroy, Martin Horvat +6
The precision of photometric and spectroscopic observations has been systematically improved in the last decade, mostly thanks to space-borne photometric missions and ground-based…
A Measurement of Radius Inflation in the Pleiades and its Relation to Rotation and Lithium Depletion
Garrett Somers, Keivan G. Stassun
Precise measurements of eclipsing binary parameters and statistical studies of young clusters have suggested that some magnetically active low-mass dwarfs possess radii inflated by…
The asteroseismic potential of TESS: exoplanet-host stars
T. L. Campante, M. Schofield, J. S. Kuszlewicz +14
New insights on stellar evolution and stellar interiors physics are being made possible by asteroseismology. Throughout the course of the Kepler mission, asteroseismology has also…
DM Ori: A Young Star Occulted by a Disturbance in its Protoplanetary Disk
Joseph E. Rodriguez, Keivan G. Stassun, Phillip Cargile +15
In some planet formation theories, protoplanets grow gravitationally within a young star's protoplanetary disk, a signature of which may be a localized disturbance in the disk's ra…
The Hot Companion and Circumbinary Disk of the Be Star HR 2142
Geraldine J. Peters, Luqian Wang, Douglas R. Gies +1
We present a spectroscopic investigation of the Be+sdO binary system HR 2142 that is based upon large sets of ultraviolet observations from the International Ultraviolet Explorer a…
Rotation in the Pleiades With K2: III. Speculations on Origins and Evolution
J. R. Stauffer, L. M. Rebull, J. Bouvier +15
We use high quality K2 light curves for hundreds of stars in the Pleiades to understand better the angular momentum evolution and magnetic dynamos of young, low mass stars. The K2…
Rotation in the Pleiades with K2: II. Multi-Period Stars
L. M. Rebull, J. R. Stauffer, J. Bouvier +15
We use K2 to continue the exploration of the distribution of rotation periods in Pleiades that we began in Paper I. We have discovered complicated multi-period behavior in Pleiades…
Rotation in the Pleiades with K2: I. Data and First Results
L. M. Rebull, J. R. Stauffer, J. Bouvier +16
Young (125 Myr), populous (1000 members), and relatively nearby, the Pleiades has provided an anchor for stellar angular momentum models for both younger and older stars. We use…
Examining the relationships between colour, , and [M/H] for APOGEE K and M dwarfs
Sarah J. Schmidt, Erika L. Wagoner, Jennifer A. Johnson +4
We present the effective temperatures (), metallicities, and colours in SDSS, 2MASS, and WISE filters, of a sample of 3834 late-K and early-M dwarfs selected from the…
The abundance discrepancy factor and t^2 in nebulae: are non-thermal electrons the culprits?
G. J. Ferland, W. J. Henney, C. R. ODell +1
Photoionization produces supra-thermal electrons, electrons with much more energy than is found in a thermalized gas at electron temperatures characteristic of nebulae. The presenc…
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…
The rotation period distributions of 4--10 Myr T Tauri stars in Orion OB1: New constraints on pre-main-sequence angular momentum evolution
Md. Tanveer Karim, Keivan G. Stassun, Cesar Briceno +15
Most existing studies of the angular momentum evolution of young stellar populations have focused on the youngest (1-3 Myr) T Tauri stars. In contrast, the angular momentum distrib…