Bibcode
Schaerer, D.; Hempel, A.; Pello, R.; Egami, E.; Richard, J.; Kneib, J.-P.; Wise, M.
Referencia bibliográfica
Galaxy Evolution Across the Hubble Time, Edited by F. Combes and J. Palous, Proceedings of the International Astronomical Union 2, IAU Symposium #235, held 14-17 August, 2006 in Prague, Czech Republic. Cambridge: Cambridge University Press, 2007., pp.425-425
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2007
Número de citas
1
Número de citas referidas
1
Descripción
We present new results following up on our deep near-IR imaging of the
strong lensing clusters Abell 1835 and AC114, which has allowed us to
identify 13 star forming galaxy candidates at z>7 (Richard et al.
2006, A&A in press, [astro-ph/ 0606134]). Our previous optical and
near-IR observations (mostly from WFPC2/HST, CFHT, ISAAC/VLT) have now
been complemented by new deep imaging with ACS/HST in the z [850] band,
with Spitzer IRAC and MIPS at longer wavelengths, and with new Chandra
observations. Furthermore we have undertaken ISAAC and FORS2
spectroscopy of a number of the high-z candidates and other interesting
objects in the field including possible intermediate z interlopers. The
ACS images confirm all of our high-z candidates as optical drop-out
sources. Limits from Spitzer are also compatible with the high-z
interpretation of the candidates. Based on these new data we will
present a re-analysis of our high-z candidates and the constraints on
the star formation history at z ˜6-10. Based on detailed SED
modeling we will quantify their photometric redshifts, compare them
with our spectroscopic observations, and we will discuss the properties
of the individual objects. Finally we'll compare our method and
candidates with those from blank fields.