A Metagalactic Cloud between Perseus and Pegasus

Bernheimer, W. E.

doi:10.1038/130132a0

Cited by 5 publications

(2 citation statements)

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“…Three regions have been of particular interest to the CIZA project due to their location at low Galactic latitudes: the GA region, the Perseus-Pisces (PP) concentration 6 (Bernheimer 1932), and the Shapley supercluster (SSC; Shapley 1930). The GA and SSC regions lie near each other in projection toward the Galactic center, while the PP region is located on the opposite side of the Galactic plane (i.e., toward the Galactic anticenter).…”

Section: Large-scale Structuresmentioning

confidence: 99%

A Systematic X‐Ray Search for Clusters of Galaxies behind the Milky Way. II. The Second CIZA Subsample

Kocevski¹,

Ebeling²,

Mullis³

et al. 2007

ApJ

101

103

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We present the latest results of the Clusters in the Zone of Avoidance (CIZA) survey, which is mapping large-scale structures behind the Milky Way by performing the first systematic search for galaxy clusters at low Galactic latitudes. The survey's approach, which uses X-ray emission to locate cluster candidates, minimizes the problems faced by optically selected cluster surveys, which have traditionally avoided this region of the sky due to the severe extinction present along the Galactic plane. We here present the second flux-limited CIZA cluster catalog, containing 57 X-ray-selected galaxy clusters, of which 88% are new discoveries. We use this sample to examine the degree to which known large-scale structures extend into the zone of avoidance and highlight newly discovered structures that have previously gone unnoticed. We note that the CIZA survey has thus far found fewer rich clusters in the Great Attractor region than would be expected given the region's proposed mass. Instead, we find a significant increase in the number of clusters behind the Great Attractor, with the most notable being an association of clusters near the Shapley supercluster. We propose that these clusters trace an extension of the large-scale filament network in which the Shapley concentration is embedded. We also highlight an association of clusters near the Galactic anticenter, which form the first supercluster found to be completely hidden by the Milky Way. Our preliminary findings of a less massive Great Attractor and the detection of significant structures behind the complex support studies that suggest the motion of nearby galaxies is due, in part, to a large-scale bulk flow, which is induced by overdensities beyond the Hydra-Centaurus region.

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Section: Large-scale Structuresmentioning

confidence: 99%

A Systematic X‐Ray Search for Clusters of Galaxies behind the Milky Way. II. The Second CIZA Subsample

Kocevski¹,

Ebeling²,

Mullis³

et al. 2007

ApJ

101

103

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“…One of the most prominent local extragalactic structures is the Pisces-Perseus Supercluster (PPS), a strong filamentary overdensity first identified as a "metagalactic cloud" by Bernheimer (1932). Fortuitously aligned nearly in the plane of the sky (e.g.…”

mentioning

confidence: 99%

The Arecibo Pisces–Perseus Supercluster Survey. I. Harvesting ALFALFA

O’Donoghue

Haynes

Koopmann

et al. 2019

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The Impact of Surveys

Rampazzo¹,

D’Onofrio²,

Zaggia³

et al. 2016

From the Realm of the Nebulae to Populations of Galaxies

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International audienceSince the most ancient times astronomers felt the need to collect and list in atlases and catalogs all the visible objects in the sky. The first stellar catalog known in the western world being the one of Hipparchus (second century BC). We have to wait until Charles Messier at the end of the eighteenth century to have the first incidental catalog of nebulae, i.e. including a mixture of fuzzy objects, nebulæ, that telescopes of the epoch could detect. In Chap. 1 we have already discussed the atlases and catalogs that soon after the discovery of galaxies appeared in the literature describing the properties of the nearby galaxies, in particular their morphologies in Chap. 3 . The subject of extragalactic papers, during the photographic plate era, was one or few galaxies, whose properties were carefully scrutinized looking at all the details resolved by telescopes in the optical waveband. This happens also today, of course, basically at all wavelengths. However, the impact of new technologies permits in the last two decades to tackle survey programs addressed to the study of specific extragalactic problems considering millions of galaxies

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A Metagalactic Cloud between Perseus and Pegasus

Cited by 5 publications

References 0 publications

A Systematic X‐Ray Search for Clusters of Galaxies behind the Milky Way. II. The Second CIZA Subsample

A Systematic X‐Ray Search for Clusters of Galaxies behind the Milky Way. II. The Second CIZA Subsample

The Arecibo Pisces–Perseus Supercluster Survey. I. Harvesting ALFALFA

The Impact of Surveys

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