%0 Generic %1 galametz2013largescale %A Galametz, Audrey %A Stern, Daniel %A Pentericci, Laura %A De Breuck, Carlos %A Vernet, Joel %A Wylezalek, Dominika %A Fassbender, Rene %A Hatch, Nina %A Kurk, Jaron %A Overzier, Roderik %A Rettura, Alessandro %A Seymour, Nick %D 2013 %K cluster evolution galaxy high-z %T A large-scale galaxy structure at z = 2.02 associated with the radio galaxy MRC0156-252 %U http://arxiv.org/abs/1309.6645 %X We present the spectroscopic confirmation of a structure of galaxies surrounding the radio galaxy MRC0156-252 at z = 2.02. The structure was initially discovered as an overdensity of both near-infrared selected z > 1.6 and mid-infrared selected z > 1.2 galaxy candidates. We use the VLT/FORS2 multi-object spectrograph to target ~80 high-redshift galaxy candidates; we obtain robust spectroscopic redshifts for more than half the targets. The majority of the confirmed sources are star-forming galaxies at z > 1.5. In addition to the radio galaxy, two of its close-by companions (< 6'') also show AGN signatures. Ten sources, including the radio galaxy, lie within |z - 2.020| < 0.015 (i.e., velocity offsets < 1500 km/s) and within 2Mpc comoving of the radio galaxy. Additional evidence suggest not only that the galaxy structure associated with MRC0156-252 is a forming galaxy cluster but also that this structure is most probably embedded in a larger scale structure.

@misc{galametz2013largescale, abstract = {We present the spectroscopic confirmation of a structure of galaxies surrounding the radio galaxy MRC0156-252 at z = 2.02. The structure was initially discovered as an overdensity of both near-infrared selected z > 1.6 and mid-infrared selected z > 1.2 galaxy candidates. We use the VLT/FORS2 multi-object spectrograph to target ~80 high-redshift galaxy candidates; we obtain robust spectroscopic redshifts for more than half the targets. The majority of the confirmed sources are star-forming galaxies at z > 1.5. In addition to the radio galaxy, two of its close-by companions (< 6'') also show AGN signatures. Ten sources, including the radio galaxy, lie within |z - 2.020| < 0.015 (i.e., velocity offsets < 1500 km/s) and within 2Mpc comoving of the radio galaxy. Additional evidence suggest not only that the galaxy structure associated with MRC0156-252 is a forming galaxy cluster but also that this structure is most probably embedded in a larger scale structure.}, added-at = {2013-09-27T18:14:29.000+0200}, author = {Galametz, Audrey and Stern, Daniel and Pentericci, Laura and De Breuck, Carlos and Vernet, Joel and Wylezalek, Dominika and Fassbender, Rene and Hatch, Nina and Kurk, Jaron and Overzier, Roderik and Rettura, Alessandro and Seymour, Nick}, biburl = {https://www.bibsonomy.org/bibtex/2c6d6f45dec0d8ceb413330ded22afa6a/miki}, description = {[1309.6645] A large-scale galaxy structure at z = 2.02 associated with the radio galaxy MRC0156-252}, interhash = {ed40bc880883f2b9d791bc9a27695699}, intrahash = {c6d6f45dec0d8ceb413330ded22afa6a}, keywords = {cluster evolution galaxy high-z}, note = {cite arxiv:1309.6645Comment: 11 pages, 9 figures, 2 tables, accepted for publication in A&A}, timestamp = {2013-09-27T18:14:29.000+0200}, title = {A large-scale galaxy structure at z = 2.02 associated with the radio galaxy MRC0156-252}, url = {http://arxiv.org/abs/1309.6645}, year = 2013 }