منابع مشابه
New H2O masers in Seyfert and FIR bright galaxies
Using the Effelsberg 100-m telescope, detections of four extragalactic water vapor masers are reported. Isotropic luminosities are ∼50, 1000, 1, and 230 L⊙ for Mrk 1066 (UGC 2456), Mrk 34, NGC 3556, and Arp 299, respectively. Mrk 34 contains by far the most distant and one of the most luminous water vapor megamasers so far reported in a Seyfert galaxy. The interacting system Arp 299 appears to ...
متن کاملDust properties of UV bright galaxies at z ∼ 2 ⋆
We investigate the properties of the extinction curve in the rest-frame UV for a sample of 34 UV-luminous galaxies at 2 < z < 2.5, selected from the FORS Deep Field (FDF) spectroscopic survey. A new parametric description of the restframe UV spectral energy distribution is adopted; its sensitivity to properties of the stellar populations or of dust attenuation is established with the use of mod...
متن کاملNew H 2 O masers in Seyfert and FIR bright galaxies . II . The intermediate luminosity range
Context. Recently, a relationship between the water maser detection rate and far infrared (FIR) flux density has been found as a result of a 22 GHz maser survey in a sample comprised of northern galaxies with 100 μm flux density > 50 Jy and a declination > −30. Aims. The survey has been extended toward galaxies with lower FIR flux densities in order to confirm this correlation and to discover a...
متن کاملGalaxies and Dust at High Redshift S 37
Much of our knowledge about the formation and evolution of high-redshift galaxies has come from studying the absorption signatures they impress on the spectra of background QSOs. The damped Lyman (DLA) systems, in particular, have proved to be valuable probes of the metallicity and dust at redshifts z 2{3 in what are the likely progenitors of galaxies like our own. At z 2 we nd that the typical...
متن کاملStar Formation and Dust Attenuation Properties in Galaxies from a Statistical UV-to-FIR Analysis
We study two galaxies samples selected in ultraviolet (UV) and in far infrared (FIR) for which the spectral energy distributions (SEDs) from the far UV (FUV) to the FIR are available. We compare the observed SEDs to modelled SEDs with several star formation histories (SFHs; decaying star formation rate plus burst) and dust attenuation laws (power law + 2175Å bump). The Bayesian method allows to...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2014
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921314010205