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NEAR-INFRARED SURVEY OF THE GOODS-NORTH FIELD : SEARCH FOR LUMINOUS GALAXY CANDIDATES AT z 6 . 5 ∗ , †
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mobasher, Bahram Capak, Peter Wang, Wei-Hao |
| Copyright Year | 2012 |
| Abstract | We present near-infrared (NIR; J and Ks) survey of the Great Observatories Origins Deep Survey-North (GOODS-N) field. The publicly available imaging data were obtained using the MOIRCS instrument on the 8.2 m Subaru and the WIRCam instrument on the 3.6 m Canada–France–Hawaii Telescope (CFHT). These observations fulfill a serious wavelength gap in the GOODS-N data, i.e., lack of deep NIR observations. We combine the Subaru/MOIRCS and CFHT/WIRCam archival data to generate deep J and Ks-band images, covering the full GOODS-N field (∼169 arcmin2) to an AB magnitude limit of ∼25 mag (3σ ). We applied z850-band dropout color selection criteria, using the NIR data generated here. We have identified two possible Lyman break galaxy (LBG) candidates at z 6.5 with J 24.5. The first candidate is a likely LBG at z 6.5 based on a weak spectral feature tentatively identified as Lyα line in the deep Keck/DEIMOS spectrum, while the second candidate is a possible LBG at z 7 based on its photometric redshift. These z850-dropout objects, if confirmed, are among the brightest such candidates found so far. At z 6.5, their star formation rate is estimated as 100–200 M yr−1. If they continue to form stars at this rate, they assemble a stellar mass of ∼5 × 1010 M after about 400 million years, becoming the progenitors of massive galaxies observed at z 5. We study the implication of the z850-band dropout candidates discovered here, in constraining the bright end of the luminosity function and understanding the nature of high-redshift galaxies. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://authors.library.caltech.edu/35306/1/0004-637X_757_1_43.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | AURA Ambiguous grammar Archive Attempt Color DNA Breaks, Double-Stranded Dropout (neural networks) GUCY2C protein, human Galaxy Line level Location-based game Luminous Studio MAG (cryptography) National origin Numerous Photometry Redshift Stars, Celestial Stellar (payment network) Telescopes United States National Aeronautics and Space Administration funding grant newton wavelength |
| Content Type | Text |
| Resource Type | Article |
