تقرير
Star formation in AGN hosts in GOODS-N
| العنوان: | Star formation in AGN hosts in GOODS-N |
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| المؤلفون: | Shao, L., Lutz, D., Nordon, R., Maiolino, R., Alexander, D. M., Altieri, B., Andreani, P., Aussel, H., Bauer, F. E., Berta, S., Bongiovanni, A., Brandt, W. N., Brusa, M., Cava, A., Cepa, J., Cimatti, A., Daddi, E., Dominguez-Sanchez, H., Elbaz, D., Schreiber, N. M. Forster, Geis, N., Genzel, R., Grazian, A., Gruppioni, C., Magdis, G., Magnelli, B., Mainieri, V., Garcia, A. M. Perez, Poglitsch, A., Popesso, P., Pozzi, F., Riguccini, L., Rodighiero, G., Rovilos, E., Saintonge, A., Salvato, M., Portal, M. Sanchez, Santini, P., Sturm, E., Tacconi, L. J., Valtchanov, I., Wetzstein, M., Wieprecht, E. |
| سنة النشر: | 2010 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | Sensitive Herschel far-infrared observations can break degeneracies that were inherent to previous studies of star formation in high-z AGN hosts. Combining PACS 100 and 160um observations of the GOODS-N field with 2Msec Chandra data, we detect ~20% of X-ray AGN individually at >3sig. The host far-infrared luminosity of AGN with L2-10~10^43erg/s increases with redshift by an order of magnitude from z=0 to z~1. In contrast, there is little dependence of far-infrared luminosity on AGN luminosity, for L2-10<~10^44erg/s AGN at z>~1. We do not find a dependence of far-infrared luminosity on X-ray obscuring column, for our sample which is dominated by L2-10<10^44erg/s AGN. In conjunction with properties of local and luminous high-z AGN, we interpret these results as reflecting the interplay between two paths of AGN/host coevolution. A correlation of AGN luminosity and host star formation is traced locally over a wide range of luminosities and also extends to luminous high z AGN. This correlation reflects an evolutionary connection, likely via merging. For lower AGN luminosities, star formation is similar to that in non-active massive galaxies and shows little dependence on AGN luminosity. The level of this secular, non-merger driven star formation increasingly dominates over the correlation at increasing redshift. Comment: Accepted for publication in A&A Herschel issue. 4 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/0004-6361/201014606 |
| URL الوصول: | http://arxiv.org/abs/1005.2562 |
| رقم الأكسشن: | edsarx.1005.2562 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/0004-6361/201014606 |
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