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相关论文: Infrared Emission from High-Redshift Galaxies in C…

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Recent observations have gathered a considerable sample of high redshift galaxy candidates and determined the evolution of their luminosity function (LF). To interpret these findings, we use cosmological SPH simulations including, in…

宇宙学与河外天体物理 · 物理学 2015-05-18 R. Salvaterra , A. Ferrara , P. Dayal

The 21cm emission line from neutral hydrogen (HI) contained within galaxies provides a way to make accurate spectroscopic redshift determinations in the radio part of the spectrum. Large radio arrays such as SKA-MID are coming online that…

宇宙学与河外天体物理 · 物理学 2026-04-30 Ainulnabilah Nasirudin , Philip Bull , Isabelle Ye

We present a new phenomenological model for the spectral energy distribution of normal star-forming galaxies between 3 and 1100 microns. A sequence of realistic galaxy spectra are constructed from a family of dust emission curves assuming a…

天体物理学 · 物理学 2009-10-31 Daniel A. Dale , George Helou , Alessandra Contursi , Nancy A. Silbermann , Sonali Kolhatkar

Accurate photometric redshifts are calculated for nearly 200,000 galaxies to a 4.5 micron flux limit of ~13 uJy in the 8.5 deg^2 Spitzer/IRAC Shallow survey. Using a hybrid photometric redshift algorithm incorporating both neural-net and…

The combination of both contributions from the observed UV emission and the absorbed radiations reprocessed in the infrared represents the ideal approach to constrain the activity of massive star formation in galaxies. Using recent results…

天体物理学 · 物理学 2007-05-23 E. Le Floc'h , the MIPS team

Hydrodynamic simulations are powerful tools for studying galaxy formation. However, it is crucial to test and improve the sub-grid physics underlying these simulations by comparing their predictions with observations. To this aim,…

星系天体物理 · 物理学 2025-07-30 A. Cornejo-Cárdenas , E. Sillero , P. B. Tissera , M. Boquien , J. Vilchez , G. Bruzual , P. Jofré

A substantial fraction of the light emitted from young or star-forming galaxies at ultraviolet to near-infrared wavelengths comes from the ionized interstellar medium in the form of emission lines and a nebular continuum. At high redshifts,…

天体物理学 · 物理学 2009-11-13 E. Zackrisson , N. Bergvall , E. Leitet

We present a comparison between the published optical, IR and CO spectroscopic redshifts of 86 (sub-)mm galaxies and their photometric redshifts as derived from long-wavelength radio-mm-FIR photometric data. The redshift accuracy measured…

天体物理学 · 物理学 2007-05-23 Itziar Aretxaga , David H. Hughes , James S. Dunlop

[Abridged]We exploit a large homogeneous dataset to derive a self-consistent picture of IR emission based on the time-dependent 24, 15, 12 and 8micron monochromatic and bolometric IR luminosity functions (LF) over the 0<z<2.5 redshift…

(abridged) We present deep Spitzer mid-infrared spectroscopy, along with 16, 24, 70, and 850um photometry, for 22 galaxies located in GOODS-N. The sample spans a redshift range of 0.6 < z < 2.6, 24um flux densities between ~0.2-1.2 mJy, and…

天体物理学 · 物理学 2011-02-11 E. J. Murphy , R. -R. Chary , D. M. Alexander , M. Dickinson , B. Magnelli , G. Morrison , A. Pope , H. I. Teplitz

We present the deepest far-IR observations obtained with Herschel and examine the 3-500um SEDs of galaxies at 0<z<2.5, supplemented by a local reference sample from IRAS, ISO, Spitzer and AKARI data. We find that the ratio of total IR…

The two major functions in galaxy evolution that we would like to measure are the stellar populations in galaxies, and their time-derivative, the star formation rate. Especially at redshifts above 1, both of these measures are benefiting…

天体物理学 · 物理学 2007-05-23 Matthew Malkan

We show that the star-forming regions in high-redshift luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) and submillimeter galaxies (SMGs) have similar physical scales to those in local normal star-forming galaxies. To first…

宇宙学与河外天体物理 · 物理学 2015-05-20 Wiphu Rujopakarn , George H. Rieke , Daniel J. Eisenstein , Stephanie Juneau

We present a simple, physically-motivated model to interpret consistently the emission from galaxies at ultraviolet, optical and infrared wavelengths. We combine this model with a Bayesian method to obtain robust statistical constraints on…

宇宙学与河外天体物理 · 物理学 2015-06-03 Elisabete da Cunha , Stephane Charlot , Loretta Dunne , Dan Smith , Kate Rowlands

We reproduce the mid-infrared to radio galaxy counts with a new empirical model based on our current understanding of the evolution of main-sequence (MS) and starburst (SB) galaxies. We rely on a simple Spectral Energy Distribution (SED)…

We present broad band imaging observations obtained with the ``peak up'' imagers of the Spitzer Space Telescope Infrared Spectrograph (IRS) at wavelengths of 16micron and 22micron for a number of sources detected primarily at submillimeter…

We investigate the infrared (IR) emission of high-redshift ($z\sim 6$), highly star-forming (${ {\rm SFR} > 100}$ $M_{\rm \odot} {\rm yr}^{-1}$) galaxies, with/without Active Galactic Nuclei (AGN), using a suite of cosmological simulations…

星系天体物理 · 物理学 2021-03-10 F. Di Mascia , S. Gallerani , C. Behrens , A. Pallottini , S. Carniani , A. Ferrara , P. Barai , F. Vito , T. Zana

We present a method that derives the dust temperatures and infrared (IR) luminosities of high-redshift galaxies assuming radiation equilibrium in a simple dust and stellar distribution geometry. Using public data from the Atacama Large…

星系天体物理 · 物理学 2023-03-29 Y. Fudamoto , A. K. Inoue , Y. Sugahara

The spectral energy distributions (SED) of dusty galaxies at intermediate redshift may look similar to very high redshift galaxies in the optical/near infrared (NIR) domain. This can lead to the contamination of high redshift galaxy…