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Roughly 25% of the optical extragalactic sky is obscured by the dust and stars of our Milky Way. Dynamically important structures might still lie hidden in this zone. Various surveys are presently being employed to uncover the galaxy…

Astrophysics · Physics 2015-06-24 A. Schröder , R. C. Kraan-Korteweg , G. A. Mamon

We investigated the potential of using DENIS for studies of galaxies behind the obscuration layer of our Milky Way, and mapping the Galactic extinction. As a pilot study, we examined DENIS I-, J-, and K-band images of heavily obscured…

Astrophysics · Physics 2007-05-23 A. Schroeder , R. C. Kraan-Korteweg , G. A. Mamon , S. Ruphy

About 25% of the optical extragalactic sky is obscured by the dust and stars of our Milky Way. Dynamically important structures might still lie hidden in this zone. Various approaches are presently being employed to uncover the galaxy…

Astrophysics · Physics 2007-05-23 Renee C. Kraan-Korteweg , Baerbel Koribalski , Sebastian Juraszek

Dust and stars in the Milky Way create a ``Zone of Avoidance'' (ZOA) in the distribution of optically visible galaxies of about 25% of the sky. To reduce this gap, optical searches for partially obscured galaxies have been performed. The…

Astrophysics · Physics 2007-05-23 Renee C. Kraan-Korteweg

Due to the foreground extinction of the Milky Way, galaxies become increasingly faint as they approach the Galactic Equator creating a ``zone of avoidance'' (ZOA) in the distribution of optically visible galaxies of about 25%. A…

Astrophysics · Physics 2015-06-24 Renee C. Kraan-Korteweg , Sebastian Juraszek

This paper provides an update to the review on extragalactic large-scale structures uncovered in the Zone of Avoidance (ZOA) by Kraan-Korteweg & Lahav 2000, in particular in the Great Attractor region. Emphasis is given to the penetration…

Astrophysics · Physics 2015-06-24 Renee C. Kraan-Korteweg

Due to the foreground extinction of the Milky Way, galaxies appear increasingly fainter the closer they lie to the Galactic Equator, creating a "zone of avoidance" of about 25% in the distribution of optically visible galaxies. A…

Astrophysics · Physics 2009-10-31 Renee C. Kraan-Korteweg , Ofer Lahav

Context. The ZOA does not allow clear optical observations of extragalactic sources behind the Milky Way due to the meaningful extinction of the optical emission of these objects. The observations in NIR wavelengths represent a potential…

Various dynamically important extragalactic large-scale structures in the local Universe lie behind the Milky Way. Most of these structures (predicted and unexpected) have only recently been made ``visible'' through dedicated deep surveys…

Astrophysics · Physics 2015-06-24 Renee C. Kraan-Korteweg , Patrick A. Woudt

The systematic mapping of obscured and optically invisible galaxies behind the Milky Way through complementary surveys are important in arriving at the whole-sky distribution of complete galaxy samples and therewith for our understanding of…

Astrophysics · Physics 2007-05-23 R. C. Kraan-Korteweg

Dust and stars in the plane of the Milky Way create a "Zone of Avoidance" in the extragalactic sky. Galaxies are distributed in gigantic labyrinth formations, filaments and great walls with occasional dense clusters. They can be traced all…

Astrophysics · Physics 2007-05-23 Renee C. Kraan-Korteweg

Galaxies behind the Milky Way suffer size reduction and dimming due to their obscuration by dust in the disk of our Galaxy. The degree of obscuration is wavelength dependent. It decreases towards longer wavelengths. Compared to the optical,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Ihab F. Riad , Renée C. Kraan-Korteweg , Patrick A. Woudt

Our Galaxy blocks a significant portion of the extragalactic sky from view, hampering studies of large-scale structure. This produces an incomplete knowledge of the distribution of galaxies, and, assuming galaxies trace mass, of the gravity…

Astrophysics · Physics 2009-10-30 P. A. Henning , R. C. Kraan-Korteweg , A. J. Rivers , A. J. Loan , O. Lahav , W. B. Burton

We discuss the possibilities of extragalactic large-scale studies behind the Zone of Avoidance (ZOA) using complementary multi-wavelength data from optical, systematic blind HI, and near-infrared (NIR) surveys. Applying these data to the…

Astrophysics · Physics 2007-05-23 A. Schroeder , R. C. Kraan-Korteweg , G. A. Mamon

We report here on extragalactic large-scale structures uncovered by a deep optical survey for galaxies behind the southern Milky Way. Systematic visual inspection of the ESO/SRC-survey revealed over 10000 previously unknown galaxies in the…

Astrophysics · Physics 2015-06-24 R. C. Kraan-Korteweg , P. A. Woudt , P. A. Henning

Current studies of the peculiar velocity flow field in the Local Universe are limited by either the lack of detection or accurate photometry for galaxies at low Galactic latitudes. The contribution to the dynamics of the Local Group of the…

Astrophysics of Galaxies · Physics 2015-06-22 Wendy L. Williams , Renée C. Kraan-Korteweg , Patrick A. Woudt

Galaxies uncovered in the Zone of Avoidance (ZOA) with deep optical searches are compared to the distribution of objects in the 2MASS Extended Source Catalog (2MASX). While the galaxy density of optical surveys is strongly correlated to the…

Astrophysics · Physics 2007-05-23 Renee C. Kraan-Korteweg , Thomas Jarrett

The HI Parkes Zone of Avoidance Survey is a 21 cm blind search with the multibeam receiver on the 64-m radiotelescope, looking for galaxies hidden behind the southern Milky Way. The first, shallow (15 mJy rms) phase of the survey has…

Astrophysics · Physics 2015-06-24 P. A. Henning , L. Staveley-Smith , R. C. Kraan-Korteweg , E. M. Sadler

As part of our programme to map the large-scale distribution of galaxies behind the southern Milky Way, we observed 314 optically-selected, partially-obscured galaxies in the Zone of Avoidance (ZOA) in the Crux and Great Attractor (GA)…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Anja C. Schroeder , Renee C. Kraan-Korteweg , Patricia A. Henning

The Zone of Avoidance (ZoA) remains one of the last frontiers in constructing a comprehensive three-dimensional map of the Universe. Galactic extinction, stellar crowding, and confusion noise have historically limited the detection of…

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