Deep J-band imaging of high redshift QSO candidates with the Himalayan Chandra Telescope

Details Deep J-band imaging of high redshift QSO candidates with the Himalayan Chandra Telescope Deep J-band imaging of high redshift QSO candidates with the Himalayan Chandra Telescope

2006-06-30

arxiv.org/abs/astro-ph/0606747v1

Astronomy and Astrophysics

Astrophysics

accepted for publication in BASI

Scientific paper

High redshift QSOs (redshift$>$5.7) are highly important objects. If such QSOs may be found, their spectra will reveal the onset of reionization of the intergalactic medium (Gunn-Peterson trough), and provide precious insights into the re-ionization epoch in the very early universe. Here we report our pilot attempt to follow-up high redshift QSOs with the Himalayan Chandra Telescope. Deep $J$-band imaging was performed on three high redshift QSO candidates color-selected from the SDSS, using the near-infrared imager. Although none of the targets turned out to be likely high redshift QSOs, careful data reduction shows that the data reach the required depth, proving that the Himalayan Chandra Telescope is a powerful tool to follow-up high redshift QSO candidates.

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