Search Publications
The Extremely Luminous Quasar Survey in the Pan-STARRS 1 Footprint (PS-ELQS)
Hall, Patrick B.; Fan, Xiaohui; Huang, Yun-Hsin +7 more
We present the results of the Extremely Luminous Quasar Survey in the 3π survey of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS; PS1). This effort applies the successful quasar selection strategy of the Extremely Luminous Survey in the Sloan Digital Sky Survey footprint (∼12,000 deg2) to a much larger area (∼21,4…
X-Ray Reprocessing: Through the Eclipse Spectra of High-mass X-Ray Binaries with XMM-Newton
Paul, Biswajit; Kretschmar, Peter; Aftab, Nafisa
The study of X-ray reprocessing is one of the key diagnostic tools to probe the environment in X-ray binary systems. One difficult aspect of studying X-ray reprocessing is the presence of much brighter primary radiation from the compact star together with the reprocessed radiation. In contrast, for eclipsing systems, the X-rays we receive during e…
Milky Way Tomography with the SkyMapper Southern Survey. I. Atmospheric Parameters and Distances of One Million Red Giants
Wolf, C.; Wang, H. -F.; Huang, Y. +7 more
Accurate determinations of atmospheric parameters (effective temperature T eff, surface gravity log g, and metallicity [Fe/H]) and distances for large complete samples are of vital importance for various Galactic studies. We have developed a photometric method to select red giant stars and estimate their atmospheric parameters from the …
Value-added Catalogs of M-type Stars in LAMOST DR5
Chen, Li; Zhong, Jing; Li, Jing +3 more
We present new catalogs of M giant and M dwarf stars from the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) data release 5 (DR5). In total, 39,796 M giants and 501,152 M dwarfs are identified from the classification pipeline. The template-fitting results contain M giants with 7 temperature subtypes from M0 to M6, M dwarfs with…
Extended Aperture Photometry of K2 RR Lyrae stars
Skarka, Marek; Pope, Benjamin J. S.; Sódor, Ádám +6 more
The Kepler Space Telescope observed thousands of RR Lyrae stars in the K2 mission. In this paper, we present our photometric solutions using extended apertures in order to conserve the flux of the stars to the highest possible extent. With this method, we are able to avoid most of the problems that RR Lyrae light curves produced by other pipelines…
Metallic-line Stars Identified from Low-resolution Spectra of LAMOST DR5
Qin, Li; Luo, A. -Li; Hou, Wen +6 more
The Large Sky Area Multi-Object Fibre Spectroscopic Telescope data release 5 (DR5) released more than 200,000 low-resolution spectra of early-type stars with a signal-to-noise ratio > 50. The search for metallic-line (Am) stars in such a large database and a study of their statistical properties are presented in this paper. Six machine-learning…
The Massive Star-forming Regions Omnibus X-ray Catalog, Third Installment
Garmire, Gordon P.; Townsley, Leisa K.; Broos, Patrick S. +1 more
We offer to the star formation community the third installment of the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC3), a compilation of X-ray point sources detected in 50 archival Chandra Advanced CCD Imaging Spectrometer observations of 14 Galactic MSFRs and surrounding fields. The MOXC3 MSFRs are NGC 2264, NGC 6193, RCW 108-IR…
Identifying Young Stellar Objects in the Outer Galaxy: l = 224° Region in Canis Major
Boyer, Martha L.; Szczerba, Ryszard; Elia, Davide +14 more
We study a very young star-forming region in the outer Galaxy that is the most concentrated source of outflows in the Spitzer Space Telescope GLIMPSE360 survey. This region, dubbed CMa-l224, is located in the Canis Major OB1 association. CMa-l224 is relatively faint in the mid-infrared, but it shines brightly at the far-infrared wavelengths as rev…
PEXO: A Global Modeling Framework for Nanosecond Timing, Microarcsecond Astrometry, and µm s-1 Radial Velocities
Butler, R. Paul; Anglada-Escudé, Guillem; Feng, Fabo +4 more
The ability to make independent detections of the signatures of exoplanets with complementary telescopes and instruments brings a new potential for robust identification of exoplanets and precision characterization. We introduce PEXO, a package for Precise EXOplanetology to facilitate the efficient modeling of timing, astrometry, and radial veloci…
KELT-22Ab: A Massive, Short-Period Hot Jupiter Transiting a Near-solar Twin
Bieryla, Allyson; Latham, David W.; Berlind, Perry +53 more
We present the discovery of KELT-22Ab, a hot Jupiter from the KELT-South survey. KELT-22Ab transits the moderately bright (V ∼ 11.1) Sun-like G2V star TYC 7518-468-1. The planet has an orbital period of P =1.3866529+/- 0.0000027 days, a radius of {R}P={1.285}-0.071+0.12 {R}J, and a relatively large mass …