Herschel-ATLAS/GAMA: What determines the far-infrared properties of radio-galaxies?

We perform a stacking analysis of H-ATLAS data in order to obtain isothermal dust temperatures and rest-frame luminosities at 250um (L250), for 1599 radio sources over the H-ATLAS P1 GAMA area. The radio sample is generated using a combination of NVSS data and K-band UKIDSS-LAS data, over 0.01<z&...

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Main Authors: Virdee, J, Hardcastle, M, Rawlings, S, Rigopoulou, D, Mauch, T, Jarvis, M, Verma, A, Smith, D, Heywood, I, White, S, Baes, M, Cooray, A, Zotti, G, Eales, S, Michalowski, M, Bourne, N, Dariush, A, Dunne, L, Hopwood, R, Ibar, E, Maddox, S, Smith, M, Valiante, E
格式: Journal article
語言:English
出版: 2013
實物特徵
總結:We perform a stacking analysis of H-ATLAS data in order to obtain isothermal dust temperatures and rest-frame luminosities at 250um (L250), for 1599 radio sources over the H-ATLAS P1 GAMA area. The radio sample is generated using a combination of NVSS data and K-band UKIDSS-LAS data, over 0.01<z<0.8. (="" (defined="" 0.49\pm0.12="" 0.89\pm0.18="" 1.4ghz="" 1.5="" a="" above="" agn.="" all="" and="" are="" as="" at="" bearing="" below="" between="" both="" but="" colour="" content="" correcting="" counterparts.="" denser="" dependent="" detected="" dust="" embedded="" environments="" explain="" find="" fir="" for="" function="" galaxies="" galaxy's="" ghz,="" halo="" has="" have="" host="" hotter,="" implies="" in="" in.="" increasing="" index.="" indicate="" into="" investigated="" l250="" l_1.4="" l_1.4ghz="" l_{k}^{*}="" l_{k}^{*}.="" little="" luminosity="" maintain="" mass="" massive="" matched="" no="" nominal="" non="" not="" of="" on="" or="" order="" parent="" projected="" properties="" r'<22)="" radio="" radio-detected="" radio-galaxies="" radio-source="" redshift,="" relation="" relations,="" results="" richer="" rises="" sample="" samples,="" sdss="" search="" sfr="" size="" sources="" spectral="" split="" stellar="" stellar-mass="" sub-1.5="" super-1.5="" system.="" terms="" that="" the="" their="" these="" this="" those="" times="" to="" we="" which="" with="" z,="" z.="">1.5 L_{K}^{*}) may have systematically lower FIR luminosities (~25%) than their colour-matched non radio-detected counterparts. Compact radio sources (&lt;30kpc) are associated with higher L250s and dust temperatures than their more extended (&gt;30kpc) counterparts. The higher dust temperature suggests that this may be attributed to enhanced SFRs, but whether this is directly or indirectly due to radio activity (e.g. jet induced or merger-driven SF) is as yet unknown.</z<0.8.>