Search Publications
Stellar Photometric Structures of the Host Galaxies of Nearby Type 1 Active Galactic Nuclei
Ho, Luis C.; Barth, Aaron J.; Im, Myungshin +2 more
We present detailed image analysis of rest-frame optical images of 235 low-redshift (z ≲ 0.35) Type 1 active galactic nuclei (AGNs) observed with the Hubble Space Telescope. The high-resolution images enable us to perform rigorous two-dimensional image modeling to decouple the luminous central point source from the host galaxy, which, when warrant…
Magnetar Broadband X-Ray Spectra Correlated with Magnetic Fields: Suzaku Archive of SGRs and AXPs Combined with NuSTAR, Swift, and RXTE
Enoto, Teruaki; Makishima, Kazuo; Kitaguchi, Takao +7 more
The 1-70 keV persistent spectra of 15 magnetars, observed with Suzaku from 2006 to 2013, were studied as a complete sample. Combined with early NuSTAR observations of four hard X-ray emitters, nine objects showed a hard power-law emission dominating at ≳ 10 keV with the 15-60 keV flux of ∼1-11× {10}-11 erg s-1 cm-2…
Star Formation In Nearby Clouds (SFiNCs): X-Ray and Infrared Source Catalogs and Membership
Garmire, Gordon P.; Feigelson, Eric D.; Broos, Patrick S. +5 more
The Star Formation in Nearby Clouds (SFiNCs) project is aimed at providing a detailed study of the young stellar populations and of star cluster formation in the nearby 22 star-forming regions (SFRs) for comparison with our earlier MYStIX survey of richer, more distant clusters. As a foundation for the SFiNCs science studies, here, homogeneous dat…
Infrared Selection of Obscured Active Galactic Nuclei in the COSMOS Field
Kartaltepe, Jeyhan S.; Tang, Ji-Jia; Juneau, Stéphanie +13 more
We present a study of the connection among black hole accretion, star formation, and galaxy morphology at z≤slant 2.5. We focus on active galactic nuclei (AGNs) selected by their mid-IR power-law emission. By fitting optical to far-IR photometry with state-of-the-art spectral energy distribution (SED) techniques, we derive stellar masses, star for…
The Great Observatories All-Sky LIRG Survey: Herschel Image Atlas and Aperture Photometry
Sanders, D. B.; Frayer, D. T.; Kim, D. -C. +24 more
Far-infrared images and photometry are presented for 201 Luminous and Ultraluminous Infrared Galaxies [LIRGs: log ({L}{IR}/{L}⊙ )=11.00{--}11.99, ULIRGs: log ({L}{IR}/{L}⊙ )=12.00{--}12.99], in the Great Observatories All-Sky LIRG Survey (GOALS), based on observations with the Herschel Space Observatory …
A Gaia-PS1-SDSS (GPS1) Proper Motion Catalog Covering 3/4 of the Sky
Goldman, Bertrand; Tian, Hai-Jun; Rix, Hans-Walter +7 more
We combine Gaia DR1, PS1, Sloan Digital Sky Survey (SDSS), and 2MASS astrometry to measure proper motions for 350 million sources across three-fourths of the sky down to a magnitude of {m}r∼ 20. Using positions of galaxies from PS1, we build a common reference frame for the multi-epoch PS1, single-epoch SDSS and 2MASS data, and calibrat…
The Herschel-ATLAS Data Release 2, Paper I. Submillimeter and Far-infrared Images of the South and North Galactic Poles: The Largest Herschel Survey of the Extragalactic Sky
Smith, Matthew W. L.; Dunne, Loretta; Viaene, Sébastien +11 more
We present the largest submillimeter images that have been made of the extragalactic sky. The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) is a survey of 660 deg2 with the PACS and SPIRE cameras in five photometric bands: 100, 160, 250, 350, and 500 µm. In this paper we present the images from our two largest field…
Astrochemical Properties of Planck Cold Clumps
Sanhueza, Patricio; Choi, Minho; Di Francesco, James +26 more
We observed 13 Planck cold clumps with the James Clerk Maxwell Telescope/SCUBA-2 and with the Nobeyama 45 m radio telescope. The N2H+ distribution obtained with the Nobeyama telescope is quite similar to SCUBA-2 dust distribution. The 82 GHz HC3N, 82 GHz CCS, and 94 GHz CCS emission are often distributed differentl…
Discerning the Gamma-Ray-emitting Region in the Flat Spectrum Radio Quasars
Zhang, L.; Wang, J. C.; Yang, C. Y. +1 more
A model-dependent method is proposed to determine the location of the γ-ray-emitting region for a given flat spectrum radio quasar (FSRQ). In the model, the extra-relativistic electrons are injected at the base of the jet and non-thermal photons are produced by both synchrotron radiation and inverse-Compton (IC) scattering in the energy dissipatio…
Cross-correlating the γ-ray Sky with Catalogs of Galaxy Clusters
Viel, Matteo; Xia, Jun-Qing; Fornengo, Nicolao +4 more
We report the detection of a cross-correlation signal between Fermi Large Area Telescope diffuse γ-ray maps and catalogs of clusters. In our analysis, we considered three different catalogs: WHL12, redMaPPer, and PlanckSZ. They all show a positive correlation with different amplitudes, related to the average mass of the objects in each catalog, wh…