%0 Generic %1 ao2017submillimeter %A Ao, Y. %A Matsuda, Y. %A Henkel, C. %A Iono, D. %A Alexander, D. M. %A Chapman, S. C. %A Geach, J. %A Hatsukade, B. %A Hayes, M. %A Hine, N. K. %A Kato, Y. %A Kawabe, R. %A Kohno, K. %A Kubo, M. %A Lehnert, M. %A Malkan, M. %A Menten, K. M. %A Nagao, T. %A Norris, R. P. %A Ouchi, M. %A Saito, T. %A Tamura, Y. %A Taniguchi, Y. %A Umehata, H. %A Weiss, A. %D 2017 %K Lya blob energy escape fraction %T Deep submillimeter and radio observations in the SSA22 field. I. Powering sources and Ly\alpha escape fraction of Ly\alpha blobs %U http://arxiv.org/abs/1704.05101 %X We study the heating mechansims and Ly\alpha escape fractions of 35 Ly\alpha blobs (LABs) at z = 3.1 in the SSA22 field, using the submillimeter (submm) data from the ALMA and the SCUBA-2 on the JCMT, and the radio data from the VLA. With ALMA and JCMT/SCUBA-2, we have identified dust continuum sources in 11 out of 35 LABs in the SSA22 field, with star formation rates (SFRs) of above 100Msun/yr. Using VLA, we have detected likely radio counterparts in 9 out of 29 LABs in the SSA22 field. We find that a radio excess in the submm/radio detected LABs is common, suggesting that active galactic nuclei (AGN) may often be present in these systems. Most radio sources without X-ray counterparts are located in the centers of the LABs. However, it is surprising that all X-ray counterparts avoid the central regions of their LABs. Possibly these X-ray sources are associated with merging systems, which re-distribute the interstellar meidium (ISM) and circumgalactic medium (CGM), leading to highly inhomogeneous gas. Alternatively, AGN and its feedback may also be responsible for inhomogeneous Ly\alpha morphology in these LABs. We obtain escape fractions of Ly\alpha photons for the LABs based on the submm and Ly\alpha data, and find that the Ly\alpha escape fractions in the LABs are significantly lower than those found for Ly\alpha emitters (LAEs) in other studies. We suspect that this large difference is due to the SCUBA-2 detection threshold, the high dust attenuation indicated by the large SFRs in our sample, as well as the dense large-scale environment in SSA22.

@misc{ao2017submillimeter, abstract = {We study the heating mechansims and Ly{\alpha} escape fractions of 35 Ly{\alpha} blobs (LABs) at z = 3.1 in the SSA22 field, using the submillimeter (submm) data from the ALMA and the SCUBA-2 on the JCMT, and the radio data from the VLA. With ALMA and JCMT/SCUBA-2, we have identified dust continuum sources in 11 out of 35 LABs in the SSA22 field, with star formation rates (SFRs) of above 100Msun/yr. Using VLA, we have detected likely radio counterparts in 9 out of 29 LABs in the SSA22 field. We find that a radio excess in the submm/radio detected LABs is common, suggesting that active galactic nuclei (AGN) may often be present in these systems. Most radio sources without X-ray counterparts are located in the centers of the LABs. However, it is surprising that all X-ray counterparts avoid the central regions of their LABs. Possibly these X-ray sources are associated with merging systems, which re-distribute the interstellar meidium (ISM) and circumgalactic medium (CGM), leading to highly inhomogeneous gas. Alternatively, AGN and its feedback may also be responsible for inhomogeneous Ly{\alpha} morphology in these LABs. We obtain escape fractions of Ly{\alpha} photons for the LABs based on the submm and Ly{\alpha} data, and find that the Ly{\alpha} escape fractions in the LABs are significantly lower than those found for Ly{\alpha} emitters (LAEs) in other studies. We suspect that this large difference is due to the SCUBA-2 detection threshold, the high dust attenuation indicated by the large SFRs in our sample, as well as the dense large-scale environment in SSA22.}, added-at = {2017-04-20T10:03:49.000+0200}, author = {Ao, Y. and Matsuda, Y. and Henkel, C. and Iono, D. and Alexander, D. M. and Chapman, S. C. and Geach, J. and Hatsukade, B. and Hayes, M. and Hine, N. K. and Kato, Y. and Kawabe, R. and Kohno, K. and Kubo, M. and Lehnert, M. and Malkan, M. and Menten, K. M. and Nagao, T. and Norris, R. P. and Ouchi, M. and Saito, T. and Tamura, Y. and Taniguchi, Y. and Umehata, H. and Weiss, A.}, biburl = {https://www.bibsonomy.org/bibtex/22df69af106dd53b80d761b517f9ef85d/miki}, description = {[1704.05101] Deep submillimeter and radio observations in the SSA22 field. I. Powering sources and Ly{\alpha} escape fraction of Ly{\alpha} blobs}, interhash = {5179640918698d0822ed0dd179f9b382}, intrahash = {2df69af106dd53b80d761b517f9ef85d}, keywords = {Lya blob energy escape fraction}, note = {cite arxiv:1704.05101Comment: 22 pages, 7 figures, submitted to ApJ}, timestamp = {2017-04-20T10:03:49.000+0200}, title = {Deep submillimeter and radio observations in the SSA22 field. I. Powering sources and Ly{\alpha} escape fraction of Ly{\alpha} blobs}, url = {http://arxiv.org/abs/1704.05101}, year = 2017 }