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Infrared Diagnostics of the ISM in the Circumnuclear Environments of the Youngest Radio Galaxies

Published online by Cambridge University Press:  07 April 2020

E. Kosmaczewski ,
Ł. Stawarz  and
A. Wójtowicz
E. Kosmaczewski
Affiliation:
Rensselaer Polytechnic Institute (RPI), 110 8th Street, Troy, NY12180, USA email: [email protected] Astronomical Observatory of Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland
Ł. Stawarz
Affiliation:
Astronomical Observatory of Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland
A. Wójtowicz
Affiliation:
Astronomical Observatory of Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland
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Abstract

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Here we present a systematic analysis of the mid-infrared properties of young radio galaxies, based on lower-resolution data provided by WISE and IRAS satellites. We restrict our analysis to sources in the earliest phase of radio galaxy evolution, with corresponding ages of the radio structures ≤ 3,000 yrs. In our sample of 29 objects, we find a variety of WISE colors, which suggests that the mid-infrared continua of studied sources are not exclusively contributed to by the circumnuclear dust. A comparison of the total mid-infrared and absorption-corrected X-ray luminosities for our sample reveals a clear correlation between the two bands. This favors the scenario in which the observed X-ray emission of young radio galaxies — at least the high-luminosity ones — originates predominantly in accretion disk corona.

Keywords

ISM: jets and outflowsgalaxies: activegalaxies: jetsinfrared: galaxiesX-rays: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S342: Perseus in Sicily: From Black Hole to Cluster Outskirts , May 2018 , pp. 268 - 269
Copyright
© International Astronomical Union 2020

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