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GOODS 850-5 is a hyperluminous radio-faint submillimeter source in the GOODS-N. Although it is generally agreed that GOODS 850-5 is at a high redshift z>~4, its exact redshift is unknown. While its stellar SED suggests z~6, its radio/FIR SED suggests a lower redshift of z~4. To better constrain its stellar SED and redshift, we carried out nano-Jansky sensitivity ultradeep NIR observations between 1.2 and 2.1 um with the HST and the 8 m Subaru Telescope. Even with such great depths we did not detect GOODS 850-5, and the results show that it is an extremely curious source. Between the Ks and 3.6 um bands its spectral slope is >3x that of an ERO, and the flux ratio between the two bands is >8x that of Lyman breaks. It is quite challenging to explain this unusually red color without a Lyman break (which would imply z>17). It requires a large amount (M* ~ 10^11.5 Msun) of reddened old stars at z~6, coexisting with an even more extinguished violent ~2400-4400 Msun/yr starburst, which does not have any associated detectable rest-frame UV radiation. We discuss the discrepancy between the NIR and radio/FIR photometric redshifts. We conclude that GOODS 850-5 is at least at z>4 and is more likely at z>~6. We describe the unusual properties of GOODS 850-5, including its SED and formation history, and we discuss the implications of such massive z>6 galaxies.
We report an SMA interferometric identification of a bright submillimeter source, GOODS 850-5. This source is one of the brightest 850 um sources in the GOODS-N but is extremely faint at all other wavelengths. It is not detected in the GOODS HST ACS
We present deep near-infrared (NIR) Js, H, and Ks-band ISAAC imaging of the WFPC2 field of the HDF-S. The 2.5x 2.5 high Galactic latitude field was observed with the VLT under the best seeing conditions with integration times amounting to 33.6 hours
We present an ultradeep Ks-band image that covers 0.5*0.5 deg^2 centered on the Great Observatories Origins Deep Survey-North (GOODS-N). The image reaches a 5 sigma depth of Ks(AB) = 24.45 in the GOODS-N region, which is as deep as the GOODS-N Spitze
We present sensitive phase-referenced VLBI results on the radio continuum emission from the z=1.87 luminous submillimeter galaxy (SMG) GOODS 850-3. The observations were carried out at 1.4 GHz using the High Sensitivity Array (HSA). Our sensitive tap
In this first paper in the SUPER GOODS series on powerfully star-forming galaxies in the two GOODS fields, we present a deep SCUBA-2 survey of the GOODS-N at both 850 and 450 micron (central rms noise of 0.28 mJy and 2.6 mJy, respectively). In the ce