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We present a spectroscopic survey of galaxies in the COSMOS field using the Fiber Multi-Object Spectrograph (FMOS), a near-infrared instrument on the Subaru Telescope. Our survey is specifically designed to detect the Halpha emission line…

We present a compilation of multiwavelength data on different star formation indicators for a sample of nearby star forming galaxies. Here we discuss the observations, reductions and measurements of ultraviolet images obtained with STIS, on…

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

The unrivalled astrometric and photometric capabilities of the Gaia mission have given new impetus to the study of young stars: both from an environmental perspective, as members of comoving star-forming regions, and from an individual…

太阳与恒星天体物理 · 物理学 2022-10-05 Vito Squicciarini , Mariangela Bonavita

A two-parameter semi-empirical model is presented for the spectral energy distributions of galaxies with contributions to their infrared-submillimeter-radio emission from both star formation and accretion disk-powered activity. This model…

星系天体物理 · 物理学 2015-06-18 Daniel A. Dale , George Helou , Georgios E. Magdis , Lee Armus , Tanio Díaz-Santos , Yong Shi

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)…

Based on a one-zone evolution model of grain size distribution in a galaxy, we calculate the evolution of infrared spectral energy distribution (SED), considering silicate, carbonaceous dust, and polycyclic aromatic hydrocarbons (PAHs). The…

星系天体物理 · 物理学 2020-10-14 Hiroyuki Hirashita , Weining Deng , Maria S. Murga

The infrared (IR) emission plays a crucial role for understanding the star formation in galaxies hidden by dust. We first examined four estimators of the IR luminosity of galaxies, L_fir (Helou et al. 1988), L_tir (Dale et al. 2001),…

天体物理学 · 物理学 2009-11-10 T. T. Takeuchi , V. Buat , J. Iglesias-Paramo , A. Boselli , D. Burgarella

Though half of cosmic starlight is absorbed by dust and reradiated at long wavelengths (3$\mu$m-3mm), constraints on the infrared through millimeter galaxy luminosity function (the `IRLF') are poor in comparison to the rest-frame…

Understanding the infrared emission of galaxies is critical to observational and theoretical investigations of the condensation of galaxies out of the intergalactic medium and the conversion of gas into stars over cosmic time. From an…

宇宙学与河外天体物理 · 物理学 2015-05-19 Cristina C. Popescu , Richard J. Tuffs

Lyman-break galaxies (LBGs) contain a non-negligible amount of dust. Takeuchi et al. (2003)(T03) constructed a model of the infrared spectral energy distribution (SED) for very young galaxies by taking into account the dust size…

天体物理学 · 物理学 2009-11-10 Tsutomu T. Takeuchi , Takako T. Ishii

We present a model for the UV to submillimeter emission from stars embedded in the general interstellar dust in galaxies (the 'infrared cirrus' component). Such emission is characterized by relatively low optical depths of dust and by cool…

天体物理学 · 物理学 2009-11-07 Andreas Efstathiou , Michael Rowan-Robinson

We present a new model for computing consistently the line and continuum emission from galaxies, based on a combination of recent population synthesis and photoionization codes. We use effective parameters to describe the HII regions and…

天体物理学 · 物理学 2015-06-24 S. Charlot , M. Longhetti

We describe a complete, flux-density-limited sample of galaxies at redshift $0.8 < z < 1.3$ selected at 16 micron. At the selection wavelength near 8 micron rest, the observed emission comes both from dust heated by intense star formation…

[abridged] The ALESS survey has followed-up a sample of 122 sub-millimeter sources in the Extended Chandra Deep Field South at 870um with ALMA, allowing to pinpoint the positions of sub-millimeter galaxies (SMGs) to 0.3'' and to find their…

The first Herschel Hi-Gal images of the galactic plane unveil the far-infrared diffuse emission of the interstellar medium with an unprecedented angular resolution and sensitivity. In this paper, we present the first analysis of these data…

星系天体物理 · 物理学 2015-05-20 M. Compiegne , N. Flagey , A. Noriega-Crespo , P. G. Martin , J. -P. Bernard , R. Paladini , S. Molinari

We present new techniques to produce IRAS 12 micron samples of galaxies and stars. We show that previous IRAS 12 micron samples are incompatible for detailed comparison with ISO surveys and review their problems. We provide a stellar…

天体物理学 · 物理学 2007-05-23 D. M. Alexander , H. Aussel

We present a framework for the interpretation of the far-infrared spectra of galaxies in which we have expanded the model parameters compared with previous work by varying the ionization parameter $U$, column density $N$(H), and gas density…

星系天体物理 · 物理学 2014-10-23 Jacqueline Fischer , N. P. Abel , E. González-Alfonso , C. C. Dudley , S. Satyapal , P. A. M. van Hoof

We demonstrate estimating the total infrared luminosity, LIR, and star formation rates (SFRs) of star-forming galaxies at redshift 0 < z < 2.8 from single-band 24 micron observations, using local spectral energy distributions (SED)…

宇宙学与河外天体物理 · 物理学 2015-05-28 W. Rujopakarn , G. H. Rieke , B. J. Weiner , P. Pérez-González , M. Rex , G. L. Walth , J. S. Kartaltepe

We provide a library of some 7000 SEDs (available at www.eso.org/~rsiebenm) for the nuclei of starburst and ultra luminous galaxies. Its purpose is to quickly obtain estimates of the basic parameters, such as luminosity, size and dust or…

天体物理学 · 物理学 2009-11-11 Ralf Siebenmorgen , Endrik Kruegel