3.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Vanderbilt UniversityUS58 papers
- California Institute of TechnologyUS55 papers
- The University of Texas at AustinUS53 papers
- University of ArizonaUS52 papers
- University of WashingtonUS52 papers
- Center for Astrophysics Harvard & SmithsonianUS41 papers
- University of OxfordGB40 papers
- University of CambridgeGB39 papers
- Rutherford Appleton LaboratoryGB38 papers
- Pennsylvania State UniversityUS37 papers
- Stanford UniversityUS36 papers
- University of PittsburghUS35 papers
77 papers · 1 filter
Open Clusters as Laboratories for Cool Star Evolution: Highlights from the Cool Stars 23 Splinter Session
Deepak Chahal, Beatrice Caccherano, Edward Gillen +16
Open clusters remain among the most powerful laboratories for calibrating how fundamental stellar properties such as rotation, magnetic activity, surface chemistry, and internal st…
Magnetic Fields of M Dwarfs from the Pleiades Open Cluster
Fabio Wanderley, Katia Cunha, Oleg Kochukhov +10
Average magnetic field measurements are presented for 62 M-dwarf members of the Pleiades open cluster, derived from Zeeman-enhanced Fe I lines in the H-band. An MCMC methodology wa…
RR Lyrae Stars Belonging to the Candidate Globular Cluster Patchick 99
Evan Butler, Andrea Kunder, Zdenek Prudil +16
Patchick 99 is a candidate globular cluster located in the direction of the Galactic bulge, with a proper motion almost identical to the field and extreme field star contamination.…
The Factory and the Beehive. V. Chromospheric and Coronal Activity and Its Dependence on Rotation in Praesepe and the Hyades
Alejandro Núñez, M. A. Agüeros, J. L. Curtis +6
Low-mass (< 1.2 Solar mass) main-sequence stars lose angular momentum over time, leading to a decrease in their magnetic activity. The details of this rotation-activity relation re…
Stellar Characterization and Radius Inflation of Hyades M Dwarf Stars From the APOGEE Survey
Fábio Wanderley, Katia Cunha, Diogo Souto +23
We present a spectroscopic analysis of a sample of 48 M dwarf stars () from the Hyades open cluster using high-resolution H-band spectra from the…
Pre-main Sequence Brackett Emitters in the APOGEE DR17 Catalog: Line Strengths and Physical Properties of Accretion Columns
Hunter Campbell, Elliott Khilfeh, Kevin R. Covey +21
Very young (t 10 Myrs) stars possess strong magnetic fields that channel ionized gas from the interiors of their circumstellar discs to the surface of the star. Upon imp…
Untangling the Galaxy. IV. Empirical Constraints on Angular Momentum Evolution and Gyrochronology for Young Stars in the Field
Marina Kounkel, Keivan G. Stassun, Luke G. Bouma +3
We present a catalog of ~100,000 periodic variable stars in TESS FFI data among members of widely distributed moving groups identified with Gaia in the previous papers in the serie…
The Factory and the Beehive. IV. A Comprehensive Study of the Rotation X-ray Activity Relation in Praesepe and the Hyades
Alejandro Núñez, Marcel A. Agüeros, Kevin R. Covey +7
X-ray observations of low-mass stars in open clusters are critical to understanding the dependence of magnetic activity on stellar properties and their evolution. Praesepe and the…
Detailed Chemical Abundances for a Benchmark Sample of M Dwarfs from the APOGEE Survey
Diogo Souto, Katia Cunha, Verne V. Smith +16
Individual chemical abundances for fourteen elements (C, O, Na, Mg, Al, Si, K, Ca, Ti, V, Cr, Mn, Fe, and Ni) are derived for a sample of M-dwarfs using high-resolution near-infrar…
Stellar Rotation of T Tauri stars in the Orion Star-Forming Complex
Javier Serna, Jesús Hernández, Marina Kounkel +14
We present a large-scale study of stellar rotation for T Tauri stars in the Orion Star-Forming Complex. We use the projected rotational velocity () estimations reported b…
2M17091769+3127589: a mass-transfer binary with an extreme mass ratio
Annaliese Miller, Marina Kounkel, Meng Sun +5
We present the orbital solution of a peculiar double-lined spectroscopic and eclipsing binary system, 2M17091769+3127589. This solution was obtained by a simultaneous fit of both A…
The Rise and Fall of the Eclipsing Binary HS Hydrae
James R. A. Davenport, Diana Windemuth, Karen Warmbein +3
HS Hydrae is a short period eclipsing binary (P_orb=1.57 day) that belongs to a rare group of systems observed to have rapidly changing inclinations. This evolution is due to a thi…
Double-lined spectroscopic binaries in the APOGEE DR16 and DR17 data
Marina Kounkel, Kevin R. Covey, Keivan G. Stassun +25
APOGEE spectra offer 1 km s precision in the measurement of stellar radial velocities (RVs). This holds even when multiple stars are captured in the same spectrum,…
Three K2 Campaigns Yield Rotation Periods for 1013 Stars in Praesepe
Rayna Rampalli, Marcel A. Agüeros, Jason L. Curtis +8
We use three campaigns of K2 observations to complete the census of rotation in low-mass members of the benchmark, 670-Myr-old open cluster Praesepe. We measure new rotati…
Orbital and stellar parameters for 2M06464003+0109157: a double-lined eclipsing binary of spotted, sub-solar twins
Annaliese Miller, Marina Kounkel, Chase Boggio +2
We calculated physical and orbital properties for 2M06464003+0109157, a 1.06 day eclipsing double lined spectroscopic binary. We modelled the system's ASAS-SN and TESS light curves…
Stellar Rotation in the K2 Sample: Evidence for Modified Spindown
Tyler A. Gordon, James R. A. Davenport, Ruth Angus +5
We analyze light curves of 284,834 unique K2 targets using a Gaussian process model with a quasi-periodic kernel function. By crossmatching K2 stars to observations from Gaia Data…
Analysis of Previously Classified White Dwarf-Main Sequence Binaries Using Data from the APOGEE Survey
Kyle A. Corcoran, Hannah M. Lewis, Borja Anguiano +12
We present analyses of near-infrared, spectroscopic data from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey for 45 previously confirmed or candidate wh…
A Differential Measurement of Circumstellar Extinction for AA Tau's 2011 Dimming Event
K. R. Covey, K. A. Larson, G. J. Herczeg +1
AA Tau is a classical T Tauri star with a highly inclined, warped circumstellar disk. For decades, AA Tau exhibited photometric and spectroscopic variability that were successfully…
Untangling the Galaxy III: Photometric Search for Pre-main Sequence Stars with Deep Learning
Aidan McBride, Ryan Lingg, Marina Kounkel +2
A reliable census of pre-main sequence stars with known ages is critical to our understanding of early stellar evolution, but historically there has been difficulty in separating s…
When Do Stalled Stars Resume Spinning Down? Advancing Gyrochronology with Ruprecht 147
Jason Lee Curtis, Marcel A. Agüeros, Sean P. Matt +17
Recent measurements of rotation periods () in the benchmark open clusters Praesepe (670 Myr), NGC 6811 (1 Gyr), and NGC 752 (1.4 Gyr) demonstrate that, after convergi…
Supernovae in the Orion: the missing link in the star forming history of the region
Marina Kounkel
The Orion Complex is a notable star forming region, that it is fragmented into several different populations that have substantial difference in their phase space. I propose a mode…
The Close Binary Fraction as a Function of Stellar Parameters in APOGEE: A Strong Anti-Correlation With Abundances
Christine N. Mazzola, Carles Badenes, Maxwell Moe +20
We use observations from the APOGEE survey to explore the relationship between stellar parameters and multiplicity. We combine high-resolution repeat spectroscopy for 41,363 dwarf…
A Study of Millimeter Variability in FUor Objects
John Wendeborn, Catherine C. Espaillat, Enrique Macias +6
FU Orionis objects (FUors) are rapidly-accreting, pre-main sequence objects that are known to exhibit large outbursts at optical and near-infrared wavelengths, with post-eruption,…
Relation of X-ray activity and rotation in M dwarfs and predicted time-evolution of the X-ray luminosity
E. Magaudda, B. Stelzer, K. R. Covey +3
We present a sample of 14 M dwarf stars observed with XMM-Newton and Chandra, for which we also computed rotational periods from Kepler Two-Wheel (K2) Mission light curves. We comp…