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We present the first X-ray spectrum of a Hot dust-obscured galaxy (DOG), namely W1835+4355 at z ~ 2.3. Hot DOGs represent a very rare population of hyperluminous (>= 10^47 erg/s), dust-enshrouded objects at z > 2 recently discovered in the…

Astrophysics of Galaxies · Physics 2015-06-23 E. Piconcelli , C. Vignali , S. Bianchi , L. Zappacosta , J. Fritz , G. Lanzuisi , G. Miniutti , A. Bongiorno , C. Feruglio , F. Fiore , R. Maiolino

Hot Dust-Obscured Galaxies (Hot DOGs), discovered by the "W1W2 dropout" selection at high redshifts ($z\sim$ 2-4), are a rare population of hyper-luminous obscured quasars. Their number density is comparable to similarly luminous type 1…

A simple optical to mid-IR color selection, R-[24] > 14, i.e. f_nu(24) / f_nu(R) > 1000, identifies highly dust obscured galaxies (DOGs) with typical redshifts of z~2 +/- 0.5. Extreme mid-IR luminosities (L_{IR} > 10^{12-14}) suggest that…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 J. Melbourne , S. Bussman , K. Brand , V. Desai , L. Armus , Arjun Dey , B. T. Jannuzi , J. R. Houck , K. Matthews , B. T. Soifer

We present the X-ray properties of 108 Dust-Obscured Galaxies (DOGs; F$_{24 \mu m}$/F$_{R} >$ 1000) in the COSMOS field, all of which detected in at least three far-infrared bands with the Herschel Observatory. Out of the entire sample, 22…

Dust-obscured galaxies (DOGs) are enshrouded by dust, and many are believed to host accreting supermassive black holes (SMBHs), which makes them unique objects for probing the coevolution of galaxies and SMBHs. We select and characterize…

Astrophysics of Galaxies · Physics 2024-10-25 Zhibo Yu , W. N. Brandt , Fan Zou , Ziyuan Zhu , Franz E. Bauer , Nathan Cristello , Bin Luo , Qingling Ni , Fabio Vito , Yongquan Xue

We present the discovery of an extremely-luminous dust-obscured galaxy (DOG) at $z_{\rm spec}$ = 3.703, WISE J101326.25+611220.1. This DOG is selected as a candidate of extremely-luminous infrared (IR) galaxies based on the photometry from…

Astrophysics of Galaxies · Physics 2018-04-25 Yoshiki Toba , Junko Ueda , Chen-Fatt Lim , Wei-Hao Wang , Tohru Nagao , Yu-Yen Chang , Toshiki Saito , Ryohei Kawabe

We report the discovery of an infrared (IR)-bright dust-obscured galaxy (DOG) that shows a strong ionized-gas outflow but no significant molecular gas outflow. Based on detail analysis of their optical spectra, we found some peculiar…

Astrophysics of Galaxies · Physics 2017-12-27 Yoshiki Toba , Shinya Komugi , Tohru Nagao , Takuji Yamashita , Wei-Hao Wang , Masatoshi Imanishi , Ai-Lei Sun

We present a physical model for the origin of z~2 Dust-Obscured Galaxies (DOGs), a class of high-redshift ULIRGs selected at 24 micron which are particularly optically faint (24/R>1000). By combining N-body/SPH simulations of high redshift…

We present VLT/XSHOOTER rest-frame UV-optical spectra of 10 Hot Dust-Obscured Galaxies (Hot DOGs) at $z\sim2$ to investigate AGN diagnostics and to assess the presence and effect of ionized gas outflows. Most Hot DOGs in this sample are…

We investigate extremely luminous dusty galaxies in the environments around WISE-selected hot dust obscured galaxies (Hot DOGs) and WISE/radio-selected active galactic nuclei (AGNs) at average redshifts of z = 2.7 and z = 1.7, respectively.…

Hot dust-obscured galaxies (Hot DOGs) are a rare population of hyperluminous dust-obscured quasars discovered by the Wide-field Infrared Survey Explorer (WISE) all-sky survey. The heavy circumnuclear dust obscuration allows only a small…

Astrophysics of Galaxies · Physics 2025-07-09 Yibin Luo , Lulu Fan , Weibin Sun , Haoran Yu , Yunkun Han , Guangwen Chen , Mengqiu Huang , Yihang Zhang , Zheyu Lin

Hot dust-obscured galaxies (Hot DOGs), the most infrared (IR) luminous objects selected by the WISE all-sky mid-IR survey, have yielded a sample of intrinsically luminous quasars (QSOs) with obscured nuclear activity and hot dust…

Spitzer MIPS images in the Bootes field of the NOAO Deep Wide-Field Survey have revealed a class of extremely dust obscured galaxy (DOG) at z~2. The DOGs are defined by very red optical to mid-IR (observed-frame) colors, R - [24 um] > 14…

Dust-obscured galaxies (DOGs) are a subset of high-redshift (z \approx 2) optically-faint ultra-luminous infrared galaxies (ULIRGs, e.g. L_{IR} > 10^{12} Lsun). We present new far-infrared photometry, at 250, 350, and 500 um…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 J. Melbourne , B. T. Soifer , Vandana Desai , Alexandra Pope , Lee Armus , Arjun Dey , R. S. Bussmann , B. T. Jannuzi , Stacey Alberts

We present the ionized gas properties of infrared (IR)-bright dust-obscured galaxies (DOGs) that show an extreme optical/IR color, $(i - [22])_{\rm AB} > 7.0$, selected with the Sloan Digital Sky Survey (SDSS) and Wide-field Infrared Survey…

Astrophysics of Galaxies · Physics 2017-12-13 Yoshiki Toba , Hyun-Jin Bae , Tohru Nagao , Jong-Hak Woo , Wei-Hao Wang , Alexander Y. Wagner , Ai-Lei Sun , Yu-Yen Chang

We investigate the star forming activity of a sample of infrared (IR)-bright dust-obscured galaxies (DOGs) that show an extreme red color in the optical and IR regime, $(i - [22])_{\rm AB} > 7.0$. Combining an IR-bright DOG sample with the…

Hot, dust-obscured galaxies (Hot DOGs) are a population of hyper-luminous obscured quasars identified by WISE. We present ALMA observations of the [CII] fine-structure line and underlying dust continuum emission in a sample of seven of the…

Dust-obscured galaxies (DOGs) with extreme infrared luminosities may represent a key phase in the co-evolution of galaxies and supermassive black holes. We select 12 DOGs at $0.3\lesssim z\lesssim1.0$ with broad Mg II or H$\beta$ emission…

Astrophysics of Galaxies · Physics 2020-09-30 Fan Zou , William N. Brandt , Fabio Vito , Chien-Ting Chen , Gordon P. Garmire , Daniel Stern , Ashraf Ayubinia

We present observations of mid-J J=4-3 or J=5-4 carbon monoxide (CO) emission lines and continuum emission from a sample of ten of the most luminous log(L/L_solar)~14 Hot Dust-Obscured Galaxies (Hot DOGs) discovered by the Wide-field…

We present SCUBA-2 850um submillimetre (submm) observations of the fields of 10 dusty, luminous galaxies at z ~ 1.7 - 4.6, detected at 12um and/or 22um by the WISE all-sky survey, but faint or undetected at 3.4um and 4.6um; dubbed hot,…