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IN-SYNC II: Virial Stars from Sub-Virial Cores -- The Velocity Dispersion of Embedded Pre-Main-Sequence Stars in NGC 1333
Jonathan B. Foster, Michiel Cottaar, Kevin R. Covey +14
The initial velocity dispersion of newborn stars is a major unconstrained aspect of star formation theory. Using near-infrared spectra obtained with the APOGEE spectrograph, we sho…
Sodium and Oxygen Abundances in the Open Cluster NGC 6791 from APOGEE H-Band Spectroscopy
Katia Cunha, Verne V. Smith, Jennifer A. Johnson +27
The open cluster NGC 6791 is among the oldest, most massive and metal-rich open clusters in the Galaxy. High-resolution -band spectra from the Apache Point Observatory Galactic…
The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields
Marc H. Pinsonneault, Yvonne Elsworth, Courtney Epstein +42
We present the first APOKASC catalog of spectroscopic and asteroseismic properties of 1916 red giants observed in the Kepler fields. The spectroscopic parameters provided from the…
Bayesian distances and extinctions for giants observed by Kepler and APOGEE
Thaíse S. Rodrigues, Léo Girardi, Andrea Miglio +30
We present a first determination of distances and extinctions for individual stars in the first release of the APOKASC catalogue, built from the joint efforts of the Apache Point O…
The power spectrum of the Milky Way: Velocity fluctuations in the Galactic disk
Jo Bovy, Jonathan C. Bird, Ana E. García Pérez +3
We investigate the kinematics of stars in the mid-plane of the Milky Way on scales between 25 pc and 10 kpc with data from the Apache Point Observatory Galactic Evolution Experimen…
High-resolution, H band Spectroscopy of Be Stars with SDSS-III/APOGEE: I. New Be Stars, Line Identifications, and Line Profiles
S. Drew Chojnowski, David G. Whelan, John P. Wisniewski +26
APOGEE has amassed the largest ever collection of multi-epoch, high-resolution (R~22,500), H-band spectra for B-type emission line (Be) stars. The 128/238 APOGEE Be stars for which…
Tracing chemical evolution over the extent of the Milky Way's Disk with APOGEE Red Clump Stars
David L. Nidever, Jo Bovy, Jonathan C. Bird +40
We employ the first two years of data from the near-infrared, high-resolution SDSS-III/APOGEE spectroscopic survey to investigate the distribution of metallicity and alpha-element…
Preliminary Evaluation of the Kepler Input Catalog Extinction Model Using Stellar Temperatures
Gail Zasowski, Deokkeun An, Marc Pinsonneault
The Kepler Input Catalog (KIC) provides reddening estimates for its stars, based on the assumption of a simple exponential dusty screen. This project focuses on evaluating and impr…
IN-SYNC I: Homogeneous Stellar Parameters from High Resolution APOGEE Spectra for Thousands of Pre-main Sequence Star
Michiel Cottaar, Kevin R. Covey, Michael R. Meyer +12
Over two years 8,859 high-resolution H-band spectra of 3,493 young (1 - 10 Myr) stars were gathered by the multi-object spectrograph of the APOGEE project as part of the IN-SYNC an…
Mapping the Interstellar Medium with Near-Infrared Diffuse Interstellar Bands
G. Zasowski, B. Menard, D. Bizyaev +10
We map the distribution and properties of the Milky Way's interstellar medium as traced by diffuse interstellar bands (DIBs) detected in near-infrared stellar spectra from the SDSS…
Extinction Maps towards the Milky Way Bulge: 2D and 3D Tests with APOGEE
M. Schultheis, G. Zasowski, C. Allende Prieto +15
Galactic interstellar extinction maps are powerful and necessary tools for Milky Way structure and stellar population analyses, particularly toward the heavily-reddened bulge and i…
The APOGEE red-clump catalog: Precise distances, velocities, and high-resolution elemental abundances over a large area of the Milky Way's disk
Jo Bovy, David L. Nidever, Hans-Walter Rix +48
The Sloan Digital Sky Survey III's Apache Point Observatory Galactic Evolution Experiment (APOGEE) is a high-resolution near-infrared spectroscopic survey covering all of the major…
Discovery of Two Rare Rigidly-Rotating Magnetosphere Stars in the APOGEE Survey
Stephen S. Eikenberry, S. Drew Chojnowski, John Wisniewski +19
The Apache Point Observatory Galactic Evolution Experiment (APOGEE) - one of the Sloan Digital Sky Survey III programs -- is using near-infrared spectra of red giant…
Testing the Asteroseismic Mass Scale Using Metal-Poor Stars Characterized with APOGEE and Kepler
Courtney R. Epstein, Yvonne P. Elsworth, Jennifer A. Johnson +29
Fundamental stellar properties, such as mass, radius, and age, can be inferred using asteroseismology. Cool stars with convective envelopes have turbulent motions that can stochast…