A OSIRIS/GTC emission-line survey of the rich cluster Cl0024+2654 at z = 0.4

Details A OSIRIS/GTC emission-line survey of the rich cluster Cl0024+2654 at z = 0.4 A OSIRIS/GTC emission-line survey of the rich cluster Cl0024+2654 at z = 0.4

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011hsa6.conf..397p&link_type=abstract

Highlights of Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA), held

Astronomy and Astrophysics

Astrophysics

Scientific paper

In the framework of the GLACE project, we present the preliminary results of a mapping of emission lines (Hα+[NII], Hβ and [OIII]) in the rich cluster Cl0024+1654 at z=0.4, using the red tunable filter of OSIRIS/GTC. This emission-line survey has been designed to detect emission-line galaxies (ELGs) whose fluxes correspond to SFR up to 2 M_&sun;/yr. These observations, with S/N>3, have a spatial coverage of at least two virial radii. Our aim is to study how galaxy properties change as a function of environment, to address the key questions about the physical processes acting upon the infalling galaxies during the course of hierarchical growth of clusters. In this poster, we describe the design of the observations and the different stages of data reduction process (image preparation, object detection and selection, flux calibration) to convert raw data obtained using TF imaging in valuable scientific information. Finally, we present a preliminary catalog of 103 star forming galaxies whose spatial distribution maps the presence of a structure falling onto the cluster core.

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