EXTENDED Lyα EMISSION FROM INTERACTING GALAXIES AT HIGH REDSHIFTS
نویسندگان
چکیده
منابع مشابه
Galaxies at High Redshifts
Several conclusions have been reached over the last few years concerning high-redshift galaxies: (1) The excess of faint blue galaxies is due to dwarf galaxies. (2) Star formation peaks at redshifts z ≈ 1 − 2. (3) It appears to occur piecemeal in any given galaxy and there is no evidence for starbursting throughout a large ∼ 10 kpc galaxy. (4) There is significant and sharp diminution in the nu...
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Observations of the cold, dense gas at high redshifts directly address fundamental questions regarding the early evolution of galaxies and quasars. The Owens Valley Millimeter Array provides excellent sensitivity and resolutions better than 1 00. The spatial distribution of red-shifted CO emission is found to be resolved in most detected objects. For example, 1 kpc size scale for the CO emittin...
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Most old distant radio galaxies should be extended X–ray sources due to inverse Compton scattering of Cosmic Microwave Background (CMB) photons. Such sources can be an important component in X-ray surveys for high redshift clusters, due to the increase with redshift of both the CMB energy density and the radio source number density. We estimate a lower limit to the space density of such sources...
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Due to the invention of new powerful instruments in the recent past (e.g. 10m class telescopes) high redshift galaxies are no longer a curiosity. High redshift young star forming galaxies can be effectively discriminated from the much more abundant foreground galaxies by their special spectral properties: a prominent break at the Lyman limit (i.e. a complete absence of flux at wavelength below ...
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Context. Charge transfer (or exchange) reactions between hydrogen atoms and protons in collisionless shocks of supernova remnants (SNRs) are a natural way of producing broad Balmer, Lyman and other lines of hydrogen. Aims. We wish to quantify the importance of shock-induced, non-thermal hydrogen emission from SNRs in young galaxies. Methods. We present a method to estimate the luminosity of bro...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2013
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/773/2/151