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
20 papers · 2 filters
Stellar Surface Magneto-Convection as a Source of Astrophysical Noise. I. Multi-component Parameterisation of Absorption Line Profiles
H. M. Cegla, S. Shelyag, C. A. Watson +1
We outline our techniques to characterise photospheric granulation as an astrophysical noise source. A four component parameterisation of granulation is developed that can be used…
Very Low-mass Stellar and Substellar Companions to Solar-like Stars from Marvels III: A Short-Period Brown Dwarf Candidate Around An Active G0Iv Subgiant
Bo Ma, Jian Ge, Rory Barnes +45
We present an eccentric, short-period brown dwarf candidate orbiting the active, slightly evolved subgiant star TYC 2087-00255-1, which has effective temperature T_eff = 5903+/-42…
Variable Stars in Large Magellanic Cloud Globular Clusters II: NGC 1786
Charles A. Kuehn, Horace A. Smith, Marcio Catelan +3
This is the second in a series of papers studying the variable stars in Large Magellanic Cloud globular clusters. The primary goal of this series is to study how RR Lyrae stars in…
Detection of a Cool, Accretion Shock-Generated X-ray Plasma in EX Lupi During the 2008 Optical Eruption
William K. Teets, David A. Weintraub, Joel H. Kastner +3
EX Lupi is the prototype for a class of young, pre-main sequence stars which are observed to undergo irregular, presumably accretion-generated, optical outbursts that result in a s…
Mass loss in pre-main sequence stars via coronal mass ejections and implications for angular momentum loss
Alicia Aarnio, Sean Matt, Keivan Stassun
We develop an empirical model to estimate mass-loss rates via coronal mass ejections (CMEs) for solar-type pre-main-sequence (PMS) stars. Our method estimates the CME mass-loss rat…
The SLoWPoKES Catalog of Low-mass Ultra-wide Binaries: A Cool Stars Resource for Testing Fundamental Properties and for Constraining Binary Formation Theory
Saurav Dhital, Andrew A. West, Keivan G. Stassun +1
We present results from the Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars (SLoWPoKES) catalog of ultra-wide (10^3-10^5.5 AU), low-mass (K5-M7) common proper motion bi…
Common Proper Motion Wide White Dwarf Binaries Selected From The Sloan Digital Sky Survey
Jeff J. Andrews, Marcel A. Agüeros, Krzysztof Belczynski +3
Wide binaries made up of two white dwarfs (WDs) receive far less attention than their tight counterparts. However, our tests using the binary population synthesis code {\tt StarTra…
The EBLM Project I-Physical and orbital parameters, including spin-orbit angles, of two low-mass eclipsing binaries on opposite sides of the Brown Dwarf limit
Amaury H. M. J. Triaud, Leslie Hebb, David R. Anderson +18
This paper introduces a series of papers aiming to study the dozens of low mass eclipsing binaries (EBLM), with F, G, K primaries, that have been discovered in the course of the WA…
Multiple views of magnetism in cool stars
J. Morin, M. Jardine, A. Reiners +9
Magnetic fields are regarded as a crucial element for our understanding of stellar physics. They can be studied with a variety of methods which provide complementary - and sometime…
High-Resolution Spectroscopy during Eclipse of the Young Substellar Eclipsing Binary 2MASS 0535-0546. II. Secondary Spectrum: No Evidence that Spots Cause the Temperature Reversal
Subhanjoy Mohanty, Keivan G. Stassun
We present high-resolution optical spectra of the young brown-dwarf eclipsing binary 2M0535-05, obtained during eclipse of the higher-mass (primary) brown dwarf. Combined with our…
Empirical Near Infrared colors for low-mass stars and brown dwarfs in the Orion Nebula Cluster
Gaetano Scandariato, Nicola Da Rio, Massimo Robberto +2
Atmospheric and evolutionary models for low-mass stars rely on approximate assumptions on the physics of the stellar structure and the atmospheric radiative transfer. This leads to…
Discovery of a Very Low Mass Triple with Late-M and T Dwarf Components: LP 704-48/SDSS J0006-0852AB
Adam J. Burgasser, Christopher Luk, Saurav Dhital +5
We report the identification of the M9 dwarf SDSS J000649.16-085246.3 as a spectral binary and radial velocity variable with components straddling the hydrogen burning mass limit.…
An Empirical Correction for Activity Effects on the Temperatures, Radii, and Estimated Masses of Low-Mass Stars and Brown Dwarfs
Keivan G. Stassun, Kaitlin M. Kratter, Aleks Scholz +1
We present empirical relations for determining the amount by which the effective temperatures and radii -- and therefore the estimated masses -- of low-mass stars and brown dwarfs…
X-raying the Beating Heart of a Newborn Star: Rotational Modulation of High-energy Radiation from V1647 Ori
Kenji Hamaguchi, Nicolas Grosso, Joel H. Kastner +5
We report a periodicity of ~1 day in the highly elevated X-ray emission from the protostar V1647 Ori during its two recent multiple-year outbursts of mass accretion. This periodici…
No Evidence Supporting Flare Driven High-Frequency Global Oscillations
M. Richardson, F. Hill, K. G. Stassun
The underlying physics that generates the excitations in the global low-frequency, < 5.3 mHz, solar acoustic power spectrum is a well known process that is attributed to solar conv…
Very Low-mass Stellar and Substellar Companions to Solar-like Stars from MARVELS II: A Short-period Companion Orbiting an F Star with Evidence of a Stellar Tertiary And Significant Mutual Inclination
Scott W. Fleming, Jian Ge, Rory Barnes +59
We report the discovery via radial velocity of a short-period (P = 2.430420 \pm 0.000006 days) companion to the F-type main sequence star TYC 2930-00872-1. A long-term trend in the…
The Effects of Close Companions (and Rotation) on the Magnetic Activity of M Dwarfs
Dylan P. Morgan, Andrew A. West, Ane Garcés +4
We present a study of close white dwarf and M dwarf (WD+dM) binary systems and examine the effect that a close companion has on the magnetic field generation in M dwarfs. We use a…
Discovery of Bright Galactic R Coronae Borealis and DY Persei Variables: Rare Gems Mined from ACVS
A. A. Miller, J. W. Richards, J. S. Bloom +4
We present the results of a machine-learning (ML) based search for new R Coronae Borealis (RCB) stars and DY Persei-like stars (DYPers) in the Galaxy using cataloged light curves f…
Very Low-Mass Stellar and Substellar Companions to Solar-Like Stars from MARVELS I: A Low Mass Ratio Stellar Companion to TYC 4110-01037-1 in a 79-day Orbit
John P. Wisniewski, Jian Ge, Justin R. Crepp +42
TYC 4110-01037-1 has a low-mass stellar companion, whose small mass ratio and short orbital period are atypical amongst solar-like (Teff ~< 6000 K) binary systems. Our analysis of…
Characterizing the Cool KOIs III. KOI-961: A Small Star with Large Proper Motion and Three Small Planets
Philip S. Muirhead, John Asher Johnson, Kevin Apps +21
We present the characterization of the star KOI 961, an M dwarf with transit signals indicative of three short-period exoplanets, originally discovered by the Kepler Mission. We pr…