UPPER LIMITS ON LY-ALPHA EMISSION AT REDSHIFT 3.4

Authors
MARTINEZGONZALEZ E GONZALEZSERRANO JI CAYON L SANZ JL MARTINMIRONES JM
Citation
E. Martinezgonzalez et al., UPPER LIMITS ON LY-ALPHA EMISSION AT REDSHIFT 3.4, Astronomy and astrophysics, 303(2), 1995, pp. 379-382
Citations number
27
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
303
Issue
2
Year of publication
1995
Pages
379 - 382
Database
ISI
SICI code
0004-6361(1995)303:2<379:ULOLEA>2.0.ZU;2-Q
Abstract
We have obtained deep broad and narrow band CCD images in the directio n 09(h)03.8(m) + 33 degrees 52'. We have analysed the images in order to search for Ly alpha emission coming from galaxies or protogalaxies at redshift approximate to 3.4. We report here on the non-detection of objects with Ly alpha emission down to a 1 sigma brightness of 4.3 x 10(-18) erg cm(-2) s(-1) arcsec(-2). We discuss the implications that this limit in Ly alpha emission can have on the possible existence of protogalaxies and HI clouds at that redshift.