The BTC40 Survey for 5 < z < 6 Quasars

Details The BTC40 Survey for 5 < z < 6 Quasars The BTC40 Survey for 5 < z < 6 Quasars

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19913810m&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #138.10; Bulletin of the American Astronomical Society, Vol. 33, p.1515

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The BTC40 Survey is a multicolor survey using images obtained with the BTC camera on the CTIO 4-m telescope in B, V, I, & Z to search for quasars at redshifts 5 < z < 6. The survey covers 40 deg2 in B, V, & I and 36 deg2 in V, I, & Z. Limiting magnitudes (3σ ) reach to V = 24.8 and I = 23. We used the V-I vs. I-Z two-color diagram to select high-redshift quasar candidates from objects classified as stellar in the I imaging data. Follow-up spectroscopy with the AAT and CTIO 4-m telescopes on candidates with I < 21.5 has yielded two quasars with redshifts of 4.6 and 4.8 as well as four emission-line galaxies with redshifts of z ≈ 0.6.

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