ar X iv : a st ro - p h / 98 02 06 4 v 1 5 F eb 1 99 8 Color – Selected High Redshift Galaxies and the HDF
نویسنده
چکیده
The quality, depth, and multi–color nature of the Hubble Deep Field images makes them an excellent resource for studying galaxies at z > 2 using selection techniques based on the presence of the 912Å Lyman break. I present a descriptive review of this method and of the properties of the objects which it identifies, and summarize spectroscopic progress on galaxies with 2 < z < 4 in the HDF. Using ground–based and HDF samples of Lyman break galaxies I discuss the luminosity function of galaxies at z ≈ 3, and consider the effects of extinction on the star formation rates that are derived from the UV luminosity information. Infrared observations of the HDF provide data on the rest–frame optical properties of z ≈ 3 galaxies, which are briefly described.
منابع مشابه
ar X iv : a st ro - p h / 98 02 06 3 v 1 5 F eb 1 99 8 The Redshift Distribution of Distant Sources from Gravitational Depletion in Clusters
Gravitational lensing can be used to analyze the redshift distribution of faint galaxies. In particular the magnification bias modifies locally the galaxy number density of lensed sources observed in lensing clusters. This depletion area probes the redshift distribution of galaxies beyond B = 25. In this proceedings I present this new tool to infer the redhsift distribution of faint galaxies.
متن کاملar X iv : a st ro - p h / 99 02 06 2 v 1 4 F eb 1 99 9 SOURCES OF RELATIVISTIC JETS IN THE GALAXY
متن کامل
ar X iv : a st ro - p h / 98 12 16 7 v 1 9 D ec 1 99 8 LYMAN BREAK GALAXIES AT z ∼ 3 AND BEYOND
We report on the status of large surveys of photometrically selected star forming galaxies at z ∼ 3 and z ∼ 4, with particular emphasis on both the advantages and the limitations of selecting objects using the “Lyman break” technique. Current results on the luminosity functions, luminosity densities, color distribution, star formation rates, clustering properties, and the differential evolution...
متن کاملar X iv : a st ro - p h / 98 02 06 9 v 1 5 F eb 1 99 8 1 Beppo - SAX Observations of Galaxy Clusters
The high spatial resolution of the MECS experiment on board Beppo-SAX has encouraged a few scientists, including the author, to perform observations of galaxy clusters. Results from the analysis of the first few observed objects are encouraging. After having reviewed the Beppo-SAX observing program for galaxy clusters and referenced contributions to these proceedings by other authors on the sam...
متن کامل