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New star-forming galaxies at z˜ 7 from Wide Field Camera Three imaging

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posted on 2023-06-08, 14:47 authored by Stephen WilkinsStephen Wilkins, Andrew J Bunker, Silvio Lorenzoni, Joseph Caruana
The addition of Wide Field Camera Three on the Hubble Space Telescope 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 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 a break, we use a combination of WFC3 imaging and pre-existing Advanced Camera for Surveys imaging to search for z˜ 7 galaxies over four fields in and around Great Observatories Origins Survey-South (GOODS-S). Our analysis reveals 29 new z˜ 7 star-forming galaxy candidates in addition to 15 pre-existing 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.

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

Publisher

Wiley-Blackwell

Issue

1

Volume

411

Page range

23-36

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2013-04-26

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-16

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