An HST Search for Lyman Continuum Emission From Galaxies at z=1.1--1.4

Abstract

If enough of their Lyman limit continuum escapes, star-forming galaxies could be significant contributors to the cosmic background of ionizing photons. To investigate this possibility, we obtained the first deep imaging in the far ultraviolet of eleven bright blue galaxies at intermediate redshift (z=1.1--1.4). NO Lyman continuum emission was detected. Sensitive, model-independent, upper limits of typically 2 x 10**-19 erg/sec/cm2/Ang were obtained for the ionizing flux escaping from these normal galaxies. This corresponds to lower limits on the observed ratio of 1500 to 700Ang flux of 150 up to 1000. Based on a wide range of stellar synthesis models, this suggests that less than 6%, down to less than 1%, of the available ionizing flux emitted by hot stars is escaping these galaxies. The magnitude of this spectral break at the Lyman l imit confirms that the basic premise of `Lyman break' searches for galaxies at high redshift can also be applied at intermediate redshifts. This implies that the integrated contribution of galaxies to the UV cosmic background at z around 1.2 is less than 15%, and may be less than 2%.

20 manuscript pages, which includes two tables and two figures. To be published in 1 December 2003 issue of The Astrophysical Journal

References in corpus (28)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• High Redshift Galaxies in the Hubble Deep Field. Color Selection and Star Formation History to z=4
• New Insight on Galaxy Formation and Evolution from Keck Spectroscopy of the Hawaii Deep Fields
• Radiative Transfer in a Clumpy Universe: II. The Utraviolet Extragalactic Background
• The Hubble Deep Field: Observations, Data Reduction, and Galaxy Photometry
• A Grid of NLTE Line-Blanketed Model Atmospheres of O-type Stars
• Radiative Transfer in a Clumpy Universe: III. The Nature of Cosmological Ionizing Sources
• Lyman Continuum Emission from Galaxies at z~3.4
• The Nature of Compact Galaxies in the Hubble Deep Field (II): Spectroscopic Properties and Implications for the Evolution of the Star Formation Rate Density of the Universe
• HST imaging of CFRS and LDSS galaxies - I: Morphological Properties
• CFRS XIV: Spectral Properties Of Field Galaxies Up To z = 1
• The Escape of Ionizing Photons from the Galaxy
• On the Escape of Ionizing Radiation from Starbursts
• The HST Quasar Absorption Line Key Project. XIV. The Evolution of Ly-alpha Absorption Lines in the Redshift Interval 0 to 1.5
• Re-examining the Lyman Continuum in Starburst Galaxies Observed with the Hopkins Ultraviolet Telescope
• A faint galaxy redshift survey to B=24
• A Study of Nine High-Redshift Clusters of Galaxies: II. Photometry, Spectra, and Ages of Clusters 0023+0423 and 1604+4304
• THE CANADA-FRANCE REDSHIFT SURVEY II: Spectroscopic Program; Data for the 0000-00 and 1000+25 Fields
• Constraints on the Lyman continuum radiation from galaxies: first results with FUSE on Mrk 54
• A Low Upper Limit to the Lyman Continuum Emission of two galaxies at z 3
• A Study of Nine High-Redshift Clusters of Galaxies : III. HST Morphology of Clusters 0023+0423 and 1604+4304
• Mission: Impossible (Escape from the Lyman Limit)
• THE CANADA-FRANCE REDSHIFT SURVEY III: "Single Emission Line" Objects, Analysis of Repeat Observations, and Spectroscopic Identifications in the 1415+52 and 2215+00 Fields
• Lyman Continuum Escape from Inhomogeneous ISM
• The Stellar UV Background at z<1.5 and the Baryon Density of Photoionized Gas
• THE CANADA-FRANCE REDSHIFT SURVEY IV: Spectroscopic Selection Effects and 0300+00 Field Spectroscopic Data
• Cosmic Star Formation History
• On The Source of Ionization of The Intergalactic Medium at $z\sim 2.4$

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