Issue |
Astron. Astrophys. Suppl. Ser.
Volume 117, Number 1, May II 1996
|
|
---|---|---|
Page(s) | 1 - 11 | |
DOI | https://doi.org/10.1051/aas:1996138 | |
Published online | 15 May 1996 |
Penetrating the “zone of avoidance”. II. Optically detected galaxies in the region 180° ≤ l ≲ 240°
Institut für Astronomie der Leopold-Franzens-Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
Send offprint request to: W. Saurer
Received:
27
January
1995
Accepted:
14
September
1995
We have carried out a systematic search for galaxies in the
galactic plane in a ten degree wide strip (-5° ≤ b ≤ +5°). In an area of 300 square degrees between ℓ = 180° and ℓ = 210°, 755 galaxies have been detected on Palomar
red-sensitive prints. The smallest galaxies show diameters of
0.1 mm corresponding to 67. We extended our survey to
δ = -27° i.e. ℓ ≋ 247° to check our catalogue for completeness
by comparing it with the Saitō et al. (1990, 1991) catalogues
of galaxies and present 334 new galaxy candidates at ℓ ≥ 210°. An asymmetry with respect to the galactic equator
is obvious. By assuming the 60 μ and 100 μ sky flux
density to be a rough measure of the total interstellar galactic
extinction, and comparing them with the surface densities of the
galaxies, we detected one possible galaxy cluster candidate at
, a concentration of
galaxies at (ℓ,b) ≈ (195°, +4.°5), and
confirmed three other galaxy concentrations. Finally, we argue
that the red-sensitive surveys (ESO R; POSS II-R, POSS II-IR)
are the best suitable material for galaxy searches in the zone
of avoidance.
Key words: catalogues and dictionaries / galaxies: general / interstellar medium: extinction / Universe (the): structure of
© European Southern Observatory (ESO), 1996