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Titolo: The north ecliptic pole supercluster
Autore: Mullis, CR; Henry, JP; Gioia, IM; Bohringer, H; Briel, UG; Voges, W; Huchra, JP;
- Indirizzi:
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA Univ Hawaii Honolulu HI USA 96822 ii, Inst Astron, Honolulu, HI 96822 USA CNR, Ist Radioastron, I-40129 Bologna, Italy CNR Bologna Italy I-40129CNR, Ist Radioastron, I-40129 Bologna, Italy Max Planck Inst Extraterr Phys, D-85741 Garching, Germany Max Planck Inst Extraterr Phys Garching Germany D-85741 arching, Germany Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA Harvard Smithsonian Ctr Astrophys Cambridge MA USA 02138 ge, MA 02138 USA
- Titolo Testata:
- ASTROPHYSICAL JOURNAL
fascicolo: 2,
volume: 553,
anno: 2001,
parte:, 2
pagine: L115 - L118
- SICI:
- 0004-637X(20010608)553:2<L115:TNEPS>2.0.ZU;2-0
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- GALAXY CLUSTERS; REDSHIFT SURVEY; UNIVERSE; EVOLUTION; FILAMENTS; CATALOG; SCALE;
- Keywords:
- cosmology : observations; galaxies : clusters : general; large scale structure of universe; X rays : general;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 29
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Mullis, CR Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA Univ Hawaii 2680 Woodlawn Dr Honolulu HI USA 96822 HI 96822 USA
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- Citazione:
- C.R. Mullis et al., "The north ecliptic pole supercluster", ASTROPHYS J, 553(2), 2001, pp. L115-L118
Abstract
We have used the ROSAT All-Sky Survey to detect a known supercluster at z = 0.087 in the north ecliptic pole region. The X-ray data greatly improve our understanding of this supercluster's characteristics, approximately doubling our knowledge of the structure's spatial extent and tripling the cluster/group membership compared with the optical discovery data. The supercluster is a rich structure consisting of at least 21 galaxy clusters and groups, 12 active galactic nuclei, 61 IRAS galaxies, and various other objects. A majority of these components were discovered with the X-ray data, but thesupercluster is also robustly detected in optical, IR, and UV wave bands. Extending 129 x 102 x 67 (h(50)(-1) Mpc)(3), the north ecliptic pole supercluster has a flattened shape oriented nearly edge-on to our line of sight. Owing to the softness of the ROSAT X-ray passband and the deep exposure over a large solid angle, we have detected for the first time a significant population of X-ray-emitting galaxy groups in a supercluster. These results demonstrate the effectiveness of X-ray observations with contiguous coveragefor studying structure in the universe.
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Documento generato il 25/05/13 alle ore 15:01:59