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A Deep Narrow Band Imaging Search for CIVλ1548Å and HeIIλ1640Å Emission from Lyman Alpha Blobs

Published online by Cambridge University Press:  25 July 2014

Fabrizio Arrigoni Battaia ,
Y. Yang ,
J. F. Hennawi ,
Y. Matsuda ,
T. Yamada  and
T. Hayashino
Fabrizio Arrigoni Battaia
Affiliation:
Max-Planck-Institut für Astronomie Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
Y. Yang
Affiliation:
Max-Planck-Institut für Astronomie Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
J. F. Hennawi
Affiliation:
Max-Planck-Institut für Astronomie Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
Y. Matsuda
Affiliation:
Max-Planck-Institut für Astronomie Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
T. Yamada
Affiliation:
Max-Planck-Institut für Astronomie Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
T. Hayashino
Affiliation:
Max-Planck-Institut für Astronomie Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
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Abstract

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To study the nature of Lyα blobs (aka LABs), we conduct a deep C IV and He II narrowband imaging survey of 13 Lyα blobs located in SSA22 proto-cluster at z ~ 3.1. We reach the unprecedented sensitivity, 5σ surface brightness limit of 2.1 − 3.4 × 10−18 erg s−1 cm−2 arcsec−2 per 1 arcsec2 aperture for two emission lines. We do not detect any extended C IV and He II emission, placing strong upper limits on the He II/Lyα and C IV/Lyα line ratios. We compare our limits with data in the literature related to the nebulae associated with high-redshift radio galaxies (HzRGs) and quasars, and we recover the data by modeling the LABs as nebulosities powered by a central QSO. For further information see Arrigoni Battaia et al. (2014).

Keywords

LABQSOCGMphotoionization
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 32 - 33
Copyright
Copyright © International Astronomical Union 2014 

References

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