FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1875342800> ?p ?o ?g. }

• W1875342800 endingPage "A132" @default.
• W1875342800 startingPage "A132" @default.
• W1875342800 abstract "We present all-sky modelling of the high resolution Planck, IRAS, and WISE infrared (IR) observations using the physical dust model presented by Draine & Li in 2007 (DL, ApJ, 657, 810). We study the performance and results of this model, and discuss implications for future dust modelling. The present work extends the DL dust modelling carried out on nearby galaxies using Herschel and Spitzer data to Galactic dust emission. We employ the DL dust model to generate maps of the dust mass surface density ΣMd, the dust optical extinction AV, and the starlight intensity heating the bulk of the dust, parametrized by Umin. The DL model reproduces the observed spectral energy distribution (SED) satisfactorily over most of the sky, with small deviations in the inner Galactic disk and in low ecliptic latitude areas, presumably due to zodiacal light contamination. In the Andromeda galaxy (M31), the present dust mass estimates agree remarkably well (within 10%) with DL estimates based on independent Spitzer and Herschel data. We compare the DL optical extinction AV for the diffuse interstellar medium (ISM) with optical estimates for approximately 2 × 105 quasi-stellar objects (QSOs) observed inthe Sloan Digital Sky Survey (SDSS). The DL AV estimates are larger than those determined towards QSOs by a factor of about 2, which depends on Umin. The DL fitting parameter Umin, effectively determined by the wavelength where the SED peaks, appears to trace variations in the far-IR opacity of the dust grains per unit AV, and not only in the starlight intensity. These results show that some of the physical assumptions of the DL model will need to be revised. To circumvent the model deficiency, we propose an empirical renormalization of the DL AV estimate, dependent of Umin, which compensates for the systematic differences found with QSO observations. This renormalization, made to match the AV estimates towards QSOs, also brings into agreement the DL AV estimates with those derived for molecular clouds from the near-IR colours of stars in the 2 micron all sky survey (2MASS). The DL model and the QSOs data are also used to compress the spectral information in the Planck and IRAS observations for the diffuse ISM to a family of 20 SEDs normalized per AV, parameterized by Umin, which may be used to test and empirically calibrate dust models. The family of SEDs and the maps generated with the DL model are made public in the Planck Legacy Archive." @default.
• W1875342800 created "2016-06-24" @default.
• W1875342800 creator A5001531996 @default.
• W1875342800 creator A5001543015 @default.
• W1875342800 creator A5002567626 @default.
• W1875342800 creator A5003813755 @default.
• W1875342800 creator A5004138773 @default.
• W1875342800 creator A5004231559 @default.
• W1875342800 creator A5004335124 @default.
• W1875342800 creator A5004381931 @default.
• W1875342800 creator A5005814463 @default.
• W1875342800 creator A5006132392 @default.
• W1875342800 creator A5006221152 @default.
• W1875342800 creator A5006341437 @default.
• W1875342800 creator A5007825523 @default.
• W1875342800 creator A5008138585 @default.
• W1875342800 creator A5008169093 @default.
• W1875342800 creator A5010467338 @default.
• W1875342800 creator A5010843883 @default.
• W1875342800 creator A5010910020 @default.
• W1875342800 creator A5013406245 @default.
• W1875342800 creator A5013738329 @default.
• W1875342800 creator A5013812064 @default.
• W1875342800 creator A5013948117 @default.
• W1875342800 creator A5014400660 @default.
• W1875342800 creator A5014626397 @default.
• W1875342800 creator A5014751825 @default.
• W1875342800 creator A5015095871 @default.
• W1875342800 creator A5015901761 @default.
• W1875342800 creator A5016194181 @default.
• W1875342800 creator A5016271660 @default.
• W1875342800 creator A5016282067 @default.
• W1875342800 creator A5016335112 @default.
• W1875342800 creator A5016391066 @default.
• W1875342800 creator A5016781401 @default.
• W1875342800 creator A5017402210 @default.
• W1875342800 creator A5017525149 @default.
• W1875342800 creator A5017974916 @default.
• W1875342800 creator A5018475357 @default.
• W1875342800 creator A5018732421 @default.
• W1875342800 creator A5019781777 @default.
• W1875342800 creator A5019966786 @default.
• W1875342800 creator A5020053519 @default.
• W1875342800 creator A5020141845 @default.
• W1875342800 creator A5020264369 @default.
• W1875342800 creator A5020834441 @default.
• W1875342800 creator A5021084967 @default.
• W1875342800 creator A5021394704 @default.
• W1875342800 creator A5021485052 @default.
• W1875342800 creator A5022073979 @default.
• W1875342800 creator A5022354673 @default.
• W1875342800 creator A5023082719 @default.
• W1875342800 creator A5023857438 @default.
• W1875342800 creator A5023974267 @default.
• W1875342800 creator A5024095636 @default.
• W1875342800 creator A5024789628 @default.
• W1875342800 creator A5025607877 @default.
• W1875342800 creator A5025789635 @default.
• W1875342800 creator A5026032813 @default.
• W1875342800 creator A5026395952 @default.
• W1875342800 creator A5027062218 @default.
• W1875342800 creator A5027088674 @default.
• W1875342800 creator A5027589256 @default.
• W1875342800 creator A5028048531 @default.
• W1875342800 creator A5028353852 @default.
• W1875342800 creator A5028665438 @default.
• W1875342800 creator A5028840631 @default.
• W1875342800 creator A5029917211 @default.
• W1875342800 creator A5032242568 @default.
• W1875342800 creator A5032301983 @default.
• W1875342800 creator A5034218569 @default.
• W1875342800 creator A5034399725 @default.
• W1875342800 creator A5034536263 @default.
• W1875342800 creator A5035033551 @default.
• W1875342800 creator A5035942558 @default.
• W1875342800 creator A5036717342 @default.
• W1875342800 creator A5036727634 @default.
• W1875342800 creator A5037246569 @default.
• W1875342800 creator A5037521756 @default.
• W1875342800 creator A5037667446 @default.
• W1875342800 creator A5038193434 @default.
• W1875342800 creator A5038194903 @default.
• W1875342800 creator A5038294318 @default.
• W1875342800 creator A5038338444 @default.
• W1875342800 creator A5038511786 @default.
• W1875342800 creator A5039118371 @default.
• W1875342800 creator A5039387878 @default.
• W1875342800 creator A5039911730 @default.
• W1875342800 creator A5039994226 @default.
• W1875342800 creator A5040011621 @default.
• W1875342800 creator A5041703458 @default.
• W1875342800 creator A5041918271 @default.
• W1875342800 creator A5042132634 @default.
• W1875342800 creator A5042780546 @default.
• W1875342800 creator A5042807253 @default.
• W1875342800 creator A5044139428 @default.
• W1875342800 creator A5044833097 @default.
• W1875342800 creator A5045249514 @default.

• next