ZEN and the search for high-redshift galaxies

Jon Willis, Frédéric Courbin, Jean Paul Kneib, Dante Minniti

Resultado de la investigación: Review article

6 Citas (Scopus)

Resumen

We present the ZEN (z equals nine) survey: a deep, narrow J-band search for proto-galactic Ly α emission at redshifts z ∼ 9. In the first phase of the survey, dubbed ZEN1, we combine an exceptionally deep image of the Hubble Deep Field South, obtained using a narrow-band filter centred on the wavelength 1.187 μm, with existing deep, broad band images covering optical to near infrared wavelengths. Candidate z ∼ 9 Ly α-emitting galaxies display a significant narrow-band excess relative to the Js-band that are undetected at optical wavelengths. We detect no sources consistent with this criterion to the 90% point source flux limit of the NB image, FNB = 3.28 × 10-18 ergs s-1 cm-2. The survey selection function indicates that we have sampled a volume of approximately 340 h-3 Mpc3 to a Ly α emission luminosity of 1043 h-2 ergs s-1. When compared to the predicted properties of z ∼ 9 galaxies based upon no evolution of observed z ∼ 6 Ly α-emitting galaxies, the volume shortfall of the current survey, i.e., the volume required to detect this putative population, is a factor of at least 8-10. We also discuss continuing narrow J-band imaging surveys that will reduce the volume shortfall factor to the point where the no-evolution prediction from z ∼ 6 is probed in a meaningful manner.

Idioma originalEnglish
Páginas (desde-hasta)70-74
Número de páginas5
PublicaciónNew Astronomy Reviews
Volumen50
N.º1-3 SPEC. ISS.
DOI
EstadoPublished - mar 2006

Huella dactilar

galaxies
wavelength
erg
narrowband
wavelengths
point sources
point source
near infrared
coverings
luminosity
broadband
filter
filters
prediction
predictions

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Willis, Jon ; Courbin, Frédéric ; Kneib, Jean Paul ; Minniti, Dante. / ZEN and the search for high-redshift galaxies. En: New Astronomy Reviews. 2006 ; Vol. 50, N.º 1-3 SPEC. ISS. pp. 70-74.
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title = "ZEN and the search for high-redshift galaxies",
abstract = "We present the ZEN (z equals nine) survey: a deep, narrow J-band search for proto-galactic Ly α emission at redshifts z ∼ 9. In the first phase of the survey, dubbed ZEN1, we combine an exceptionally deep image of the Hubble Deep Field South, obtained using a narrow-band filter centred on the wavelength 1.187 μm, with existing deep, broad band images covering optical to near infrared wavelengths. Candidate z ∼ 9 Ly α-emitting galaxies display a significant narrow-band excess relative to the Js-band that are undetected at optical wavelengths. We detect no sources consistent with this criterion to the 90{\%} point source flux limit of the NB image, FNB = 3.28 × 10-18 ergs s-1 cm-2. The survey selection function indicates that we have sampled a volume of approximately 340 h-3 Mpc3 to a Ly α emission luminosity of 1043 h-2 ergs s-1. When compared to the predicted properties of z ∼ 9 galaxies based upon no evolution of observed z ∼ 6 Ly α-emitting galaxies, the volume shortfall of the current survey, i.e., the volume required to detect this putative population, is a factor of at least 8-10. We also discuss continuing narrow J-band imaging surveys that will reduce the volume shortfall factor to the point where the no-evolution prediction from z ∼ 6 is probed in a meaningful manner.",
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Willis, J, Courbin, F, Kneib, JP & Minniti, D 2006, 'ZEN and the search for high-redshift galaxies', New Astronomy Reviews, vol. 50, n.º 1-3 SPEC. ISS., pp. 70-74. https://doi.org/10.1016/j.newar.2005.11.029

ZEN and the search for high-redshift galaxies. / Willis, Jon; Courbin, Frédéric; Kneib, Jean Paul; Minniti, Dante.

En: New Astronomy Reviews, Vol. 50, N.º 1-3 SPEC. ISS., 03.2006, p. 70-74.

Resultado de la investigación: Review article

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AU - Willis, Jon

AU - Courbin, Frédéric

AU - Kneib, Jean Paul

AU - Minniti, Dante

PY - 2006/3

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N2 - We present the ZEN (z equals nine) survey: a deep, narrow J-band search for proto-galactic Ly α emission at redshifts z ∼ 9. In the first phase of the survey, dubbed ZEN1, we combine an exceptionally deep image of the Hubble Deep Field South, obtained using a narrow-band filter centred on the wavelength 1.187 μm, with existing deep, broad band images covering optical to near infrared wavelengths. Candidate z ∼ 9 Ly α-emitting galaxies display a significant narrow-band excess relative to the Js-band that are undetected at optical wavelengths. We detect no sources consistent with this criterion to the 90% point source flux limit of the NB image, FNB = 3.28 × 10-18 ergs s-1 cm-2. The survey selection function indicates that we have sampled a volume of approximately 340 h-3 Mpc3 to a Ly α emission luminosity of 1043 h-2 ergs s-1. When compared to the predicted properties of z ∼ 9 galaxies based upon no evolution of observed z ∼ 6 Ly α-emitting galaxies, the volume shortfall of the current survey, i.e., the volume required to detect this putative population, is a factor of at least 8-10. We also discuss continuing narrow J-band imaging surveys that will reduce the volume shortfall factor to the point where the no-evolution prediction from z ∼ 6 is probed in a meaningful manner.

AB - We present the ZEN (z equals nine) survey: a deep, narrow J-band search for proto-galactic Ly α emission at redshifts z ∼ 9. In the first phase of the survey, dubbed ZEN1, we combine an exceptionally deep image of the Hubble Deep Field South, obtained using a narrow-band filter centred on the wavelength 1.187 μm, with existing deep, broad band images covering optical to near infrared wavelengths. Candidate z ∼ 9 Ly α-emitting galaxies display a significant narrow-band excess relative to the Js-band that are undetected at optical wavelengths. We detect no sources consistent with this criterion to the 90% point source flux limit of the NB image, FNB = 3.28 × 10-18 ergs s-1 cm-2. The survey selection function indicates that we have sampled a volume of approximately 340 h-3 Mpc3 to a Ly α emission luminosity of 1043 h-2 ergs s-1. When compared to the predicted properties of z ∼ 9 galaxies based upon no evolution of observed z ∼ 6 Ly α-emitting galaxies, the volume shortfall of the current survey, i.e., the volume required to detect this putative population, is a factor of at least 8-10. We also discuss continuing narrow J-band imaging surveys that will reduce the volume shortfall factor to the point where the no-evolution prediction from z ∼ 6 is probed in a meaningful manner.

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