Search Publications
A Systematic Search for the Reddest Far-infrared and Submillimeter Galaxies: Revealing Dust-embedded Starbursts at High Redshifts
Yan, Haojing; Ma, Zhiyuan; Huang, Jia-Sheng +1 more
We present the results of our systematic search for the reddest far-infrared (FIR) and submillimeter (sub-mm) galaxies using the data from the Herschel Multi-tiered Extragalactic Survey (HerMES) and the SCUBA2 Cosmological Legacy Survey (S2CLS). The red FIR galaxies are "500 µm risers," whose spectral energy distributions increase with wavel…
Long-period High-amplitude Red Variables in the KELT Survey
Pepper, Joshua; Stassun, Keivan G.; Siverd, Robert J. +8 more
We present a sample of 4132 Mira-like variables (red variables with long periods and high amplitudes) in the Kilodegree Extremely Little Telescope (KELT) survey. Of these, 376 are new Mira-like detections. We used Two Micron All Sky Survey (2MASS) colors to identify candidate asymptotic giant branch stars. We searched for photometric variability a…
The Extended Gaia-PS1-SDSS (GPS1+) Proper Motion Catalog
Goldman, Bertrand; Tian, Hai-Jun; Rix, Hans-Walter +3 more
The Gaia + PanSTARRS1 (PS1) + Sloan Digital Sky Survey (SDSS) + Two Micron All-Sky Survey (2MASS) (GPS1) catalog was released in 2017. It delivered precise proper motions for around 350 million sources down to a magnitude of $r\sim 20$ mag. In this study, we present GPS1+, the extension GPS1 catalog down to $r\sim 22.5$ mag, based on Gaia data rel…
HST/COS Observations of Quasar Outflows in the 500-1050 ŠRest Frame. VII. Distances and Energetics for 11 Outflows in Five Quasars
Xu, Xinfeng; Kriss, Gerard A.; Arav, Nahum +2 more
From Hubble Space Telescope/Cosmic Origins Spectrograph spectra of five quasars, 16 outflows are detected. For 11 outflows, we are able to constrain their distances to the central source (R) and their energetics. In instances of multiple electron number density determinations (used in the calculation of R) for the same outflow, the values are cons…
Massive Stars in the SDSS-IV/APOGEE2 Survey. III. New OB Stars in the Direction of the Sagittarius Spiral Arm
Minniti, Dante; Roman-Lopes, Alexandre; Tapia, Mauricio +2 more
We have applied the semi-empirical spectral analysis, developed by the Sloan Digital Sky Survey (SDSS)-IV/Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE2) Massive Star Team, to a large sample of new O- and B-type stars identified along the Sagittarius spiral arm, in the direction of the southern star clusters NGC3603 and NGC3576.…
A Catalog of Periodic Variables in Open Clusters M35 and NGC 2158
Bouma, L. G.; Bhatti, W.; Bakos, G. Á. +3 more
We present a catalog of 1143 periodic variables, compiled from our image-subtracted photometric analysis of the K2 Campaign-0 super stamp. This super stamp is centered on the open clusters M35 and NGC 2158. Approximately 46% of our periodic variables were previously unreported. Of the catalog variables, we find that 331 are members of M35 and 56 a…
A Catalog of Solar Flare Events Observed by the SOHO/EIT
Martens, Petrus C. H.; Rotti, Sumanth A.; Aydin, Berkay
We have compiled a catalog of solar flares (SFs) as observed by the Extreme ultraviolet Imaging Telescope (EIT) on board the Solar and Heliospheric Observatory (SOHO) spacecraft and the Geostationary Operational Environmental Satellites (GOES) spacecraft over a span from 1997 to 2010. During mid-1998, the cadence of EIT images was revised from two…
Yonsei Evolutionary Population Synthesis (YEPS) Model. III. Surface Brightness Fluctuation of Normal and Helium-enhanced Simple Stellar Populations
Chung, Chul; Lee, Sang-Yoon; Yoon, Suk-Jin +2 more
We present an evolutionary population synthesis model of the surface brightness fluctuation (SBF) for normal and He-enriched simple stellar populations (SSPs). While our SBF model for the normal He population agrees with other existing models, the He-rich population, containing hotter horizontal branch stars and brighter red clump stars than the n…
The Wind beneath My Wings. I. Spectral Types and Multiplicity of the Central Stars Supporting Stellar Bow Shock Nebulae
Kobulnicky, Henry A.; Dixon, Don M.; Schurhammer, Danielle P. +9 more
Arcuate mid-infrared nebulae known as stellar bow shock nebulae (SBNe) have been previously hypothesized to be supported by the strong stellar winds and/or luminosity of massive early-type stars. We present an optical spectroscopic survey of 84 stars identified from mid-infrared images as candidate SBN-supporting stars. Eighty-one of 84 sources, 9…
Submillimeter and Far-infrared Spectroscopy of Monodeuterated Amidogen Radical (NHD): Improved Rest Frequencies for Astrophysical Observations
Bizzocchi, Luca; Melosso, Mattia; Giuliano, Barbara Michela +6 more
Observations of ammonia in interstellar environments have revealed high levels of deuteration, and all its D-containing variants, including ND3, have been detected in cold prestellar cores and around young protostars. The observation of these deuterated isotopologues is very useful for elucidating the chemical and physical processes tak…