The Proximity Effect, the UV Background and the Statistics of the Lyman-Alpha Lines at High Resolution

Preprint

29 February 1996

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9602026

Abstract

We present results from high resolution (R\simeq 28000) spectra of six high- redshift QSOs taken at the ESO NTT telescope that allow the detailed study of the Ly-alpha population in the redshift interval z=2.8-4.1. The typical Doppler parameters found for the Ly-alpha lines lie in the interval b=20\div30 km/s, corresponding to temperatures T>24000K, with a fraction of the order 15% in the range 10= 14 and radii R\simeq 200 kpc are found to be similar, suggesting a possible common association with galaxies.

Keywords

REDSHIFT INTERVAL
COLUMN DENSITY
UV BACKGROUND
INTERVAL Z
LY ALPHA
RADII
QSOS

All Related Versions

Version 1, 1996-02-06, ArXiv
Version 2, 1996-02-29, ArXiv
Published version: The Astrophysical Journal, 466, 46.

This publication has 0 references indexed in Scilit: