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The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA Derived Quantities, Data Visualization Tools and Stellar Library
D. S. Aguado, Romina Ahumada, Andres Almeida +230
Twenty years have passed since first light for the Sloan Digital Sky Survey (SDSS). Here, we release data taken by the fourth phase of SDSS (SDSS-IV) across its first three years o…
SDSS-IV MaStar -- A Large and Comprehensive Empirical Stellar Spectral Library: First Release
Renbin Yan, Yanping Chen, Daniel Lazarz +45
We present the first release of the MaNGA Stellar Library (MaStar), which is a large, well-calibrated, high-quality empirical library covering the wavelength range of 3,622-10,354A…
Discovery of a disrupting open cluster far into the Milky Way halo: a recent star formation event in the leading arm of the Magellanic stream?
Adrian M. Price-Whelan, David L. Nidever, Yumi Choi +4
We report the discovery of a young (), low-mass (), metal-poor () stellar association at a he…
The APOGEE-2 Survey of the Orion Star Forming Complex: I. Target Selection and Validation with early observations
J'Neil Cottle, Kevin R. Covey, Genaro Suárez +26
The Orion Star Forming Complex (OSFC) is a central target for the APOGEE-2 Young Cluster Survey. Existing membership catalogs span limited portions of the OSFC, reflecting the diff…
Three-dimensional dust mapping in the Orion Complex, combining Gaia-TGAS, 2MASS, and WISE
S. Rezaei Kh., C. A. L. Bailer-Jones, E. F. Schlafly +1
We present a map of the three-dimensional (3D) distribution of dust in the Orion complex. Orion is the closest site of high-mass star formation, making it an excellent laboratory f…
Overview of the DESI Legacy Imaging Surveys
Arjun Dey, David J. Schlegel, Dustin Lang +157
The DESI Legacy Imaging Surveys are a combination of three public projects (the Dark Energy Camera Legacy Survey, the Beijing-Arizona Sky Survey, and the Mayall z-band Legacy Surve…
UKIRT-2017-BLG-001Lb: A giant planet detected through the dust
Y. Shvartzvald, S. Calchi Novati, B. S. Gaudi +8
We report the discovery of a giant planet in event UKIRT-2017-BLG-001, detected by the UKIRT microlensing survey. The mass ratio between the planet and its host is $q=1.50_{-0.14}^…
A Color-locus Method for Mapping Using Ensembles of Stars
Albert Lee, Gregory M. Green, Edward F. Schlafly +11
We present a simple but effective technique for measuring angular variation in across the sky. We divide stars from the Pan-STARRS1 catalog into Healpix pixels and determine…
Mapping Distances Across the Perseus Molecular Cloud Using CO Observations, Stellar Photometry, and Gaia DR2 Parallax Measurements
Catherine Zucker, Edward F. Schlafly, Joshua S. Speagle +4
We present a new technique to determine distances to major star-forming regions across the Perseus Molecular Cloud, using a combination of stellar photometry, astrometric data, and…
The Optical/Near-Infrared Extinction Law In Highly Reddened Regions
M. W. Hosek, J. R. Lu, J. Anderson +6
A precise extinction law is a critical input when interpreting observations of highly reddened sources such as young star clusters and the Galactic Center (GC). We use Hubble Space…
Galactic Reddening in 3D from Stellar Photometry - An Improved Map
Gregory M. Green, Edward F. Schlafly, Douglas Finkbeiner +13
We present a new 3D map of interstellar dust reddening, covering three quarters of the sky (declinations greater than -30 degrees) out to a distance of several kiloparsecs. The map…