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Title: | New star forming galaxies at z ≈ 7 from WFC3 imaging |
Authors: | Wilkins, Stephen M. Bunker, Andrew J. Lorenzoni, Silvio Caruana, Joseph |
Keywords: | Galaxies Astrophysics Galaxies -- Evolution Galaxies -- Observations Red shift -- Observations Galaxies -- Formation Cosmology Cosmology -- Observations Spectral imaging |
Issue Date: | 2011 |
Publisher: | Royal Astronomical Society |
Citation: | Wilkins, S. M., Bunker, A. J., Lorenzoni, S., & Caruana, J. (2011). New star-forming galaxies at z≈ 7 from Wide Field Camera Three imaging. Monthly Notices of the Royal Astronomical Society, 411(1), 23-36. |
Abstract: | The addition of Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) has led to a dramatic increase in our ability to study the z > 6 Universe. The improvement in the near-infrared (NIR) sensitivity of WFC3 over previous instruments has enabled us to reach apparent magnitudes approaching 29 (AB). This allows us to probe the rest-frame ultraviolet (UV) continuum, redshifted into the NIR at z > 6. Taking advantage of the large optical depths of the intergalactic medium at this redshift, resulting in the Lyman-α break, we use a combination of WFC3 imaging and pre-existing Advanced Camera for Surveys (ACS) imaging to search for z ≈ 7 galaxies over 4 fields in and around Great Observatories Origins Survey (GOODS) South. Our analysis reveals 29 new z ≈ 7 star forming galaxy candidates in addition to 15 preexisting candidates already discovered in these fields. The improved statistics from our doubling of the robust sample of z-drop candidates confirms the previously observed evolution of the bright end of the luminosity function. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/87660 |
Appears in Collections: | Scholarly Works - FacSciPhy |
Files in This Item:
File | Description | Size | Format | |
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New star forming galaxies.pdf | 1.35 MB | Adobe PDF | View/Open |
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