HerMES: SPIRE emission from radio-selected active galactic nuclei

Seymour, N.; Symeonidis, M.; Page, M. J.; Amblard, A.; Arumugam, V.; Aussel, H.; Blain, A.; Bock, J.; Boselli, A.; Buat, V.; Castro-Rodriguez, N.; Cava, A.; Chanial, P.; Clements, D. L.; Conley, A.; Conversi, L.; Cooray, A.; Dowell, C. D.; Dwek, E.; Eales, S.; Elbaz, D.; Franceschini, A.; Glenn, J.; Solares, E. A. Gonzalez; Griffin, M.; Hatziminaoglou, E.; Ibar, E.; Isaak, K.; Ivison, R. J.; Lagache, G.; Levenson, L.; Lu, N.; Madden, S.; Maffei, B.; Mainetti, G.; Marchetti, L.; Nguyen, H. T.; O'Halloran, B.; Oliver, S. J.; Omont, A.; Panuzzo, P.; Papageorgiou, A.; Pearson, C. P.; Perez-Fournon, I.; Pohlen, M.; Rawlings, J. I.; Rizzo, D.; Roseboom, I. G.; Rowan-Robinson, M.; Schulz, B.; Scott, Douglas; Shupe, D. L.; Smith, A. J.; Stevens, J. A.; Trichas, M.; Tugwell, K. E.; Vaccari, M.; Valtchanov, I.; Vigroux, L.; Wang, L.; Wright, G.; Xu, C. K.; Zemcov, M.

HerMES: SPIRE emission from radio-selected active galactic nuclei

Seymour, N., Symeonidis, M., Page, M. J., Amblard, A., Arumugam, V., Aussel, H., Blain, A., Bock, J., Boselli, A., Buat, V., Castro-Rodriguez, N., Cava, A., Chanial, P., Clements, D. L., Conley, A., Conversi, L., Cooray, A., Dowell, C. D., Dwek, E., Eales, S., Elbaz, D., Franceschini, A., Glenn, J., Solares, E. A. Gonzalez, Griffin, M., Hatziminaoglou, E., Ibar, E., Isaak, K., Ivison, R. J., Lagache, G., Levenson, L., Lu, N., Madden, S., Maffei, B., Mainetti, G., Marchetti, L., Nguyen, H. T., O'Halloran, B., Oliver, S. J., Omont, A., Panuzzo, P., Papageorgiou, A., Pearson, C. P., Perez-Fournon, I., Pohlen, M., Rawlings, J. I., Rizzo, D., Roseboom, I. G., Rowan-Robinson, M., Schulz, B., Scott, Douglas, Shupe, D. L., Smith, A. J., Stevens, J. A., Trichas, M., Tugwell, K. E., Vaccari, M., Valtchanov, I., Vigroux, L., Wang, L., Wright, G., Xu, C. K. and Zemcov, M. (2011) HerMES: SPIRE emission from radio-selected active galactic nuclei. Monthly Notices of the Royal Astronomical Society (MNRAS), 413 (3). pp. 1777-1786. ISSN 0035-8711

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We examine the rest-frame far-infrared emission from powerful radio sources with 1.4-GHz luminosity densities of 25 < log(L-1.4/W Hz-1) < 26.5 in the extragalactic Spitzer First Look Survey field. We combine Herschel/SPIRE flux densities with Spitzer/Infrared Array Camera and Multiband Imaging Photometer for Spitzer infrared data to obtain total (<file name="mnr_18253_mu1.gif" type="gif"/>m) infrared luminosities for these radio sources. We separate our sources into a moderate, 0.4 < z < 0.9, and a high, 1.2 < z < 3.0, redshift sub-sample and we use Spitzer observations of a z < 0.1 3CRR sample as a local comparison. By comparison to numbers from the Square Kilometre Array (SKA) Simulated Skies, we find that our moderate-redshift sample is complete and our high-redshift sample is 14 per cent complete. We constrain the ranges of mean star formation rates (SFRs) to be 3.4-4.2, 18-41 and 80-581 M-circle dot yr-1 for the local, moderate- and high-redshift samples, respectively. Hence, we observe an increase in the mean SFR with increasing redshift which we can parametrize as similar to(1 + z)Q, where Q = 4.2 +/- 0.8. However, we observe no trends of mean SFR with radio luminosity within the moderate- or high-redshift bins. We estimate that radio-loud active galactic nuclei (AGN) in the high-redshift sample contribute 0.1-0.5 per cent to the total SFR density at that epoch. Hence, if all luminous starbursts host radio-loud AGN we infer a radio-loud phase duty cycle of 0.001-0.005.

Item Type	Article
Identification Number	10.1111/j.1365-2966.2011.18253.x
Additional information	The definitive version can be found at: http://onlinelibrary.wiley.com/ Copyright Royal Astronomical Society
Keywords	galaxies: active, infrared: galaxies, radio continuum: galaxies
Date Deposited	15 May 2025 12:12
Last Modified	29 Oct 2026 01:03