Fine structure of Galactic foreground ISM towards high-redshift AGN - Utilizing Herschel PACS and SPIRE data

K. Perger, S. Pinter, S. Frey, L. Tóth

Research output: Contribution to journalArticle

Abstract

One of the most certain ways to determine star formation rate in galaxies is based on far infrared (FIR) measurements. To decide the origin of the observed FIR emission, subtracting the Galactic foreground is a crucial step. We utilized Herschel photometric data to determine the hydrogen column densities in three galactic latitude regions, at b = 27°, 50° and -80°. We applied a pixel-by-pixel fit to the spectral energy distribution (SED) for the images aquired from parallel PACS-SPIRE observations in all three sky areas. We determined the column densities with resolutions 45 and 6', and compared the results with values estimated from the IRAS dust maps. Column densities at 27° and 50° galactic latitudes determined from the Herschel data are in a good agreement with the literature values. However, at the highest galactic latitude we found that the column densities from the Herschel data exceed those derived from the IRAS dust map.

Original languageEnglish
Pages (from-to)166-167
Number of pages2
JournalProceedings of the International Astronomical Union
Volume12
Issue numberS333
DOIs
Publication statusPublished - Jan 1 2017

Keywords

  • extinction
  • infrared: ISM; ISM: dust

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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