학술논문
Herschel-ATLAS/GAMA: What determines the far-infrared properties of radio-galaxies?
Document Type
Working Paper
Author
Virdee, Jasmeer; Hardcastle, Martin; Rawlings, Steven; Rigopoulou, Dimitra; Mauch, Tom; Jarvis, Matt; Verma, Aprajita; Smith, Daniel; Heywood, Ian; White, Sarah; Baes, Martin; Cooray, Asantha; De Zotti, Gianfranco; Eales, Steve; Michalowski, Michal; Bourne, Nathan; Dariush, Ali; Dunne, Loretta; Hopwood, Rosalind; Ibar, Eduardo; Maddox, Steve; Smith, Matthew; Valiante, Elisabetta
Source
Subject
Language
Abstract
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 0.011.5 L_{K}^{*}) may have systematically lower FIR luminosities (~25%) than their colour-matched non radio-detected counterparts. Compact radio sources (<30kpc) are associated with higher L250s and dust temperatures than their more extended (>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.
Comment: 18 pages, 10 figures, accepted in MNRAS
Comment: 18 pages, 10 figures, accepted in MNRAS