Issue |
A&A
Volume 380, Number 2, December III 2001
|
|
---|---|---|
Page(s) | 441 - 459 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361:20011455 | |
Published online | 15 December 2001 |
A catalogue of galaxies behind the southern Milky Way*
II. The Crux and Great Attractor regions (
289° to 338°)
1
Dept. of Astronomy, University of Cape Town, Private Bag, Rondebosch 7700, South Africa
2
Dept. de Astronomía, Universidad de Guanajuato, Apartado Postal 144, Guanajuato, GTO 36000, Mexico
Corresponding author: P. A. Woudt, pwoudt@artemisia.ast.uct.ac.za
Received:
11
May
2001
Accepted:
15
October
2001
In this second paper of the catalogue series of galaxies behind the
southern Milky Way, we report on the deep optical galaxy search in the Crux region ( and
) and the Great Attractor region (
and
).
The galaxy catalogues are presented, a brief description of the galaxy search given,
as well as a discussion on the distribution and characteristics of
the uncovered galaxies.
A total of 8182 galaxies with major diameters
were
identified in this ~850 square degree area: 3759 galaxies in the Crux region
and 4423 galaxies in the Great Attractor region. Of the 8182 galaxies, 229
(2.8% ) were catalogued before in the optical (3 in radio) and 251 galaxies have a reliable (159),
or likely (92) cross-identification in the IRAS Point Source Catalogue (3.1% ).
A number of prominent overdensities and filaments of galaxies are identified.
They are not correlated with the Galactic foreground extinction
and hence indicative of extragalactic large-scale structures.
Redshifts obtained at the South African Astronomical Observatory (SAAO) for 518 of the
newly catalogued galaxies in the Crux and Great Attractor regions (Fairall et al. [CITE]; Woudt
et al. [CITE]) confirm distinct voids and clusters in the area here surveyed.
With this optical galaxy search, we have reduced the
width of the optical "Zone of Avoidance" for galaxies with extinction-corrected
diameters larger than 1.3 arcmin from extinction levels
to
: the remaining optical
Zone of Avoidance is now limited by
(see Fig. 16).
Key words: catalogs / surveys / ISM: dust, extinction / galaxies: fundamental parameters / cosmology: large-scale structure of Universe
© ESO, 2001
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