Results 1 to 10 of about 629 (178)
Dense Molecular Gas Properties of the Central Kiloparsec of Nearby Ultraluminous Infrared Galaxies Constrained by ALMA Three Transition-line Observations [PDF]
The Astrophysical Journal, 2023 We report the results of Atacama Large Millimeter/submillimeter Array (ALMA) 1–2 kpc resolution, three rotational transition-line ( J = 2–1, J = 3–2, and J = 4–3) observations of multiple dense molecular gas tracers (HCN, HCO ^+ , and HNC) for 10 nearby (
Masatoshi Imanishi +3 more
doaj +2 more sources
JWST Discovery of a Very Fast Biconical Outflow of Warm Molecular Gas in the Nearby Ultraluminous Infrared Galaxy F08572+3915 NW [PDF]
The Astrophysical JournalWe present new James Webb Space Telescope (JWST) Mid-Infrared Instrument Medium-Resolution Spectrometer observations of the nearby ultraluminous infrared galaxy (ULIRG) F08572+3915 NW. These integral field spectroscopic (IFS) data reveal a kpc-scale warm-
Kylie Yui Dan +11 more
doaj +2 more sources
The hyperluminous X‐ray source population
Astronomische Nachrichten, Volume 344, Issue 4, May 2023., 2023 Abstract We have recently published a catalog of 1843 candidate ultraluminous X‐ray sources (ULXs). This is the largest catalog of ULXs to date and was built by cross‐correlating recent serendipitous source catalogs from the XMM‐Newton, Swift, and Chandra observatories with a large sample of galaxies, primarily from HyperLEDA.
A. D. A. MacKenzie +2 more
wiley +1 more source
Cosmic Sands: The Origin of Dusty, Star-forming Galaxies in the Epoch of Reionization
The Astrophysical Journal, 2023 We present the Cosmic Sands suite of cosmological zoom-in simulations based on the simba galaxy formation model in order to study the buildup of the first massive and dusty galaxies in the early universe.
Sidney Lower +3 more
doaj +1 more source
Discovery of a Low-redshift Hot Dust-obscured Galaxy
The Astrophysical Journal, 2023 We report the discovery of the hyperluminous, highly obscured active galactic nuclei (AGN) WISE J190445.04+485308.9 (W1904+4853, hereafter, L _bol ∼ 1.1 × 10 ^13 L _⊙ ) at z = 0.415.
Guodong Li +12 more
doaj +1 more source
A Near-infrared-faint, Far-infrared-luminous Dusty Galaxy at z ∼ 5 in COSMOS-Web
The Astrophysical Journal, 2023 A growing number of far-infrared (FIR) bright sources completely invisible in deep extragalactic optical surveys hint at an elusive population of z > 4 dusty, star-forming galaxies.
Jed McKinney +34 more
doaj +1 more source
Main Sequence to Starburst Transitioning Galaxies: Gamma-Ray Burst Hosts at z ∼ 2
The Astrophysical Journal, 2023 Star-forming galaxies populate a main sequence (MS), a well-defined relation between stellar mass ( M _* ) and star formation rate (SFR). Starburst (SB) galaxies lie significantly above the relation, whereas quenched galaxies lie below the sequence.
Jakub Nadolny +10 more
doaj +1 more source
A Diverse Population of z ∼ 2 ULIRGs Revealed by JWST Imaging
The Astrophysical Journal, 2023 Four ultraluminous infrared galaxies (ULIRGs) observed with JWST/NIRcam in the Cosmos Evolution Early Release Science program offer an unbiased preview of the z ∼ 2 ULIRG population.
J.-S. Huang +14 more
doaj +1 more source
The Astrophysical Journal, 2023 We use archival ALMA observations of the HCN and CO J = 1–0 transitions, in addition to the radio continuum at 93 GHz, to assess the relation between dense gas, star formation, and gas dynamics in 10 nearby (ultra)luminous IR galaxies (U)LIRGs and late ...
Ashley R. Bemis, Christine D. Wilson
doaj +1 more source
The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys
Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012 Significant progress has been made in the last few years on understanding how supermassive black holes form and grow. In this paper, we begin by reviewing the spectral signatures of active galactic nuclei (AGN) ranging from radio to hard X‐ray wavelengths.
Ezequiel Treister +2 more
wiley +1 more source