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Resolving the structure of the Galactic foreground using Herschel measurements and the Kriging technique

Published online by Cambridge University Press:  08 May 2018

S. Pinter Open the ORCID record for S. Pinter [Opens in a new window] ,
Z. Bagoly ,
L. G. Balázs ,
I. Horvath ,
I. I. Racz ,
S. Zahorecz  and
L. V. Tóth
S. Pinter
Affiliation:
Eötvös University, Budapest, email: s.pinter@astro.elte.hu
Z. Bagoly
Affiliation:
Eötvös University, Budapest, email: s.pinter@astro.elte.hu
L. G. Balázs
Affiliation:
Eötvös University, Budapest, email: s.pinter@astro.elte.hu MTA CSFK Konkoly Observatory, Budapest
I. Horvath
Affiliation:
National University of Public Service, Budapest
I. I. Racz
Affiliation:
Eötvös University, Budapest, email: s.pinter@astro.elte.hu MTA CSFK Konkoly Observatory, Budapest
S. Zahorecz
Affiliation:
Osaka Prefecture University, Sakai National Astronomical Observatory of Japan, Mitaka-shi
L. V. Tóth
Affiliation:
Eötvös University, Budapest, email: s.pinter@astro.elte.hu MTA CSFK Konkoly Observatory, Budapest
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Abstract

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Investigating the distant extragalactic Universe requires a subtraction of the Galactic foreground. One of the major difficulties deriving the fine structure of the galactic foreground is the embedded foreground and background point sources appearing in the given fields. It is especially so in the infrared. We report our study subtracting point sources from Herschel images with Kriging, an interpolation method where the interpolated values are modelled by a Gaussian process governed by prior covariances. Using the Kriging method on Herschel multi-wavelength observations the structure of the Galactic foreground can be studied with much higher resolution than previously, leading to a better foreground subtraction at the end.

Keywords

ISM: structureinfrared: ISMinfrared: starstechniques: image processing
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S333: Peering towards Cosmic Dawn , October 2017 , pp. 168 - 169
Copyright
Copyright © International Astronomical Union 2018 

References

Bagoly, Z., Szécsi, D., Balázs, L. G., et al. 2016, A&A, 593, L10Google Scholar
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Fehér, O., Tóth, L. V., Ward-Thompson, D., et al. 2016, A&A, 590, A75Google Scholar