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相关论文: Predicting dust extinction from the stellar mass o…

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We analyze the optical continuum of star-forming galaxies in SDSS by fitting stacked spectra with stellar population synthesis models to investigate the relation between stellar mass, stellar metallicity, dust attenuation and star formation…

星系天体物理 · 物理学 2017-09-27 H. Jabran Zahid , Rolf-Peter Kudritzki , Charlie Conroy , Brett Andrews , I-Ting Ho

We present new results from an on-going programme to study the dust extragalactic extinction law in E/S0 galaxies with dust lanes with the Southern African Large Telescope (SALT) during its performance-verification phase. The wavelength…

We combine samples of nearby galaxies with Herschel photometry selected on their dust, metal, HI, and stellar mass content, and compare these to chemical evolution models in order to discriminate between different dust sources. In a…

(Abridged) We assemble a sample of 3258 low-redshift galaxies from the SDSS DR6 with complementary photometric observations by GALEX, 2MASS and IRAS at far-ultraviolet and infrared wavelengths. We use a recent, simple but physically…

宇宙学与河外天体物理 · 物理学 2015-05-18 Elisabete da Cunha , Celine Eminian , Stephane Charlot , Jeremy Blaizot

We present the star formation and dust attenuation properties for a sample of 602 galaxies at redshifts $\rm{3<z<7}$, as part of the JADES survey. Our analysis is based on measurements of the $\rm{H}\alpha/\rm{H}\beta$ Balmer Decrement…

We use a complete sample of galaxies drawn from the SDSS to study how structure, star formation and nuclear activity depend on local density and on stellar mass. Local density is estimated by counting galaxies above a fixed absolute…

In this paper we explore the relation between dust extinction and stellar light distribution in disks of spiral galaxies. Extinction influences our dynamical and photometric perception of disks, since it can distort our measurement of the…

天体物理学 · 物理学 2009-11-11 B. W. Holwerda , R. A. González , P. C. van der Kruit , Ronald J. Allen

An accurate estimation of the star formation-related properties of galaxies is crucial for understanding the evolution of galaxies. In galaxies, ultraviolet (UV) light emitted by recently formed massive stars is attenuated by dust, which is…

星系天体物理 · 物理学 2015-06-11 A. Sakurai , T. T. Takeuchi , F. -T. Yuan , V. Buat , D. Burgarella

We present results on the Paschen-$\alpha$ (Pa$\alpha$) emitting galaxies observed as part of the JWST FRESCO survey in the GOODS-North and GOODS-South fields. Utilizing the JWST NIRCam wide field slitless spectroscopy (WFSS), we analyze…

星系天体物理 · 物理学 2026-01-06 Zhaoran Liu , Takahiro Morishita , Tadayuki Kodama

Many investigations of star formation rates (SFRs) in galaxies have explored details of dust obscuration, with a number of recent analyses suggesting that obscuration appears to increase in systems with high rates of star formation. To date…

天体物理学 · 物理学 2008-12-18 J. Afonso , A. Hopkins , B. Mobasher , C. Almeida

The most widely used Galactic extinction map (Schlegel, Finkbeiner, & Davis 1998, SFD) is constructed assuming that the observed FIR fluxes entirely come from the Galactic dust. According to the earlier suggestion by Yahata et al. (2007),…

宇宙学与河外天体物理 · 物理学 2015-06-23 Toshiya Kashiwagi , Yasushi Suto , Atsushi Taruya , Issha Kayo , Takahiro Nishimichi , Kazuhiro Yahata

The evolution of the cosmic dust content and the cycle between metals and dust in the interstellar medium (ISM) play a fundamental role in galaxy evolution. The chemical enrichment of the Universe can be traced through the evolution of the…

We re-analyze correlations between global molecular gas depletion time (Tdep) and galaxy parameters including stellar mass, specific star formation rate (sSFR), stellar mass surface density and concentration index. The analysis is based on…

星系天体物理 · 物理学 2015-01-12 Mei-Ling Huang , Guinevere Kauffmann

To investigate the distribution of dust in Sb and Sc galaxies we have analyzed near-infrared and optical surface photometry for an unbiased sample of 37 galaxies. Since light in the $K$-band is very little affected by extinction by dust,…

天体物理学 · 物理学 2007-05-23 R. F. Peletier , E. A. Valentijn , A. F. M. Moorwood , W. Freudling , J. H. Knapen , J. E. Beckman

We study a hundred of galaxies from the spectroscopic Sloan Digital Sky Survey with individual detections in the Far-Infrared Herschel PACS bands (100 or 160 $\mu$m) and in the GALEX Far-UltraViolet band up to z$\sim$0.4 in the COSMOS and…

The underlying distribution of galaxies' dust SEDs (i.e., their spectra re-radiated by dust from rest-frame $\sim$3$\mu$m-3mm) remains relatively unconstrained due to a dearth of FIR/(sub)mm data for large samples of galaxies. It has been…

We develop a dust efflux model of radiation pressure acting on dust grains which successfully reproduces the relation between stellar mass, dust opacity and star formation rate observed in local star-forming galaxies. The dust content of…

宇宙学与河外天体物理 · 物理学 2015-06-16 H. Jabran Zahid , Paul Torrey , Rolf Kudritzki , Lisa Kewley , Romeel Dave , Margaret Geller

We derive the mean wavelength dependence of stellar attenuation in a sample of 239 high redshift (1.90 < z < 2.35) galaxies selected via Hubble Space Telescope (HST) WFC3 IR grism observations of their rest-frame optical emission lines. Our…

We compute the cosmic star formation rate (SFR) and the rest-frame comoving luminosity density in various pass-bands as a function of redshift using large-scale \Lambda-CDM hydrodynamical simulations with the aim of understanding their…

天体物理学 · 物理学 2009-10-31 Kentaro Nagamine , Renyue Cen , Jeremiah P. Ostriker

We use a sample of 43,690 galaxies selected from the Sloan Digital Sky Survey Data Release 4 to study the systematic effects of specific star formation rate (SSFR) and galaxy size (as measured by the half light radius, r_h) on the…

天体物理学 · 物理学 2009-11-13 Sara L. Ellison , David R. Patton , Luc Simard , Alan W. McConnachie