Search Publications
A Search for Variable Stars in the Globular Cluster M4 with K2
Wallace, Joshua J.; Hartman, Joel D.; Bakos, Gáspár Á. +1 more
We extract light curves for 4554 objects with 9 < G < 19 in the K2 superstamp observations of the globular cluster M4, including 3784 cluster members, and search for variability. Among cluster-member objects, we detect 66 variables, of which 52 are new discoveries. Among objects not belonging to the cluster, we detect 24 variables, of which …
The Kepler Smear Campaign: Light Curves for 102 Very Bright Stars
Davies, Guy R.; Bieryla, Allyson; Latham, David W. +19 more
We present the first data release of the Kepler Smear Campaign, using collateral “smear” data obtained in the Kepler four-year mission to reconstruct light curves of 102 stars too bright to have been otherwise targeted. We describe the pipeline developed to extract and calibrate these light curves and show that we attain photometric precision comp…
An Hα Imaging Survey of All (Ultra)luminous Infrared Galaxies at Decl. ≥ -30° in the GOALS Sample
Wu, Hong; Cao, Chen; Jin, Jun-Jie +5 more
This paper presents the result of Hα imaging for luminous and ultraluminous infrared galaxies. It is a complete subsample of the Great Observatories All-sky LIRG Survey (GOALS) with decl. ≥ -30°, and consists of 148 galaxies with log(L IR/L ⊙) ≥ 11.0. All the Hα images were carried out using the 2.16 m telescope at the Xinglo…
Bright Southern Variable Stars in the bRing Survey
Ireland, Michael J.; Bailey, John I., III; Kenworthy, Matthew A. +9 more
In addition to monitoring the bright star β Pic during the near-transit event for its giant exoplanet, the β Pictoris b Ring (bRing) observatories at Siding Springs Observatory, Australia and Sutherland, South Africa have monitored the brightnesses of bright stars (V ≃ 4-8 mag) centered on the south celestial pole (δ ≤ -30°) for approximately two …
Spatial Variation of the Chemical Properties of Massive Star-forming Clumps
Zhou, Jianjun; Esimbek, Jarken; He, Yuxin +4 more
We selected 90 massive star-forming clumps with strong N2H+(1-0), HCO+(1-0), HCN(1-0), and HNC(1-0) emission from the Millimetre Astronomy Legacy Team 90 GHz survey. We obtained Herschel data for all 90 sources and NRAO VLA Sky Survey data for 51 of them. We convolved and regridded all images to the same resolution…
Surveying the Bright Stars by Optical Interferometry. II. A Volume-limited Multiplicity Survey of Main-sequence F Stars
Hutter, D. J.; Tycner, C.; Zavala, R. T. +3 more
We present the results of a multiplicity survey for a volume-limited sample of 29 main-sequence F0-G0 stars within 17 pc conducted with the Navy Precision Optical Interferometer (NPOI). Four companions were detected in previously known binary systems. The results for these stars show good agreement with previously published orbits. For one of thes…
AREAcat: A Tool to Compute Area Coverage of GALEX UV GUVcat and BCScat, SDSS, PanSTARRS, and Gaia Source Catalogs in Chosen Sky Regions
de la Vega, Alexander; Bianchi, Luciana; Shiao, Bernie +1 more
We present AREAcat, an interactive online tool to compute the area mapped by recent catalogs that cover most of the sky, but not contiguously, such as the Galaxy Evolution Explorer (GALEX) ultraviolet (UV) source catalogs GUVcat_AIS. Constructed from ≲600 million measurements by removing duplicate measurements of the same source in repeated observ…
Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
Blinnikov, Sergei; Townsend, Richard H. D.; Bildsten, Lars +10 more
We update the capabilities of the software instrument Modules for Experiments in Stellar Astrophysics (MESA) and enhance its ease of use and availability. Our new approach to locating convective boundaries is consistent with the physics of convection, and yields reliable values of the convective-core mass during both hydrogen- and helium-burning p…
The Dark Energy Survey: Data Release 1
Benoit-Lévy, A.; Bechtol, K.; Juneau, S. +201 more
We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science operations. DES DR1 is based on optical/near-infrared imaging from 345 distinct nights (2013 August to …
Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog with Measured Completeness and Reliability Based on Data Release 25
Dupree, Andrea K.; Barclay, Thomas; Bryson, Steve +59 more
We present the Kepler Object of Interest (KOI) catalog of transiting exoplanets based on searching 4 yr of Kepler time series photometry (Data Release 25, Q1-Q17). The catalog contains 8054 KOIs, of which 4034 are planet candidates with periods between 0.25 and 632 days. Of these candidates, 219 are new, including two in multiplanet systems (KOI-8…