The XMM-Newton survey of the ELAIS-S1 field

Autor:	Simonetta Puccetti, Fabrizio Fiore, J. E. Dias, Chiara Feruglio, G. Zamorani, Andrea Comastri, Valerio D'Elia, Carlotta Gruppioni, H. Buttery, Cristian Vignali, Ignazio Pillitteri, F. La Franca, Marcella Brusa, Stefano Berta, Andrea Grazian, Alberto Franceschini, Paolo Ciliegi, N. Sacchi, M. Mignoli
Přispěvatelé:	Puccetti, S, Fiore, F, D'Elia, V, Pillitteri, I, Feruglio, C, Grazian, A, Brusa, M, Ciliegi, P, Comastri, A, Gruppioni, C, Mignoli, M, Vignali, C, Zamorani, G, LA FRANCA, Fabio, Sacchi, N, Franceschini, A, Berta, S, Buttery, H, Dias, Je, Puccetti S., Fiore F., D'Elia V., Pillitteri I., Feruglio C., Grazian A., Brusa M., Ciliegi P., Comastri A., Gruppioni C., Mignoli M., Vignali C., Zamorani G., La Franca F., Sacchi N., Franceschini A., Berta S., Buttery H., Dias J.E., S PUCCETTI, F FIORE, V D'ELIA, PILLITTERI I, C FERUGLIO, A GRAZIAN, M BRUSA, P CILIEGI, A COMASTRI, C GRUPPIONI, M MIGNOLI, C VIGNALI, G ZAMORANI, F LA FRANCA, N SACCHI, A FRANCESCHINI, S BERTA, H BUTTERY, J E DIAS
Rok vydání:	2006
Předmět:	Physics X-rays : galaxie Field (physics) galaxies : active Astrophysics (astro-ph) FOS: Physical sciences Flux Astronomy and Astrophysics Astrophysics H band Redshift Distribution (mathematics) Space and Planetary Science Range (statistics) Relative density large-scale structure of Universe S band
Zdroj:	Astronomy & Astrophysics. 457:501-515
ISSN:	1432-0746 0004-6361
Popis:	We have surveyed with XMM-Newton the central ~0.6 deg2 region of the ELAIS-S1 field down to flux limits of ~5.5X10-16 cgs (0.5-2 keV, S band), ~2X10-15 cgs (2-10 keV, H band), and ~4X10-15 cgs (5-10 keV, HH band). We detect a total of 478 sources, 395 and 205 of which detected in the S and H bands respectively. We identified 7 clearly extended sources and estimated their redshift through X-ray spectral fits with thermal models. In four cases the redshift is consistent with z=0.4. We have computed the angular correlation function of the sources in the S and H bands, finding best fit correlation angles theta_0=5.2+/-3.8 arcsec and theta_0=12.8+/-7.8 arcsec respectively. A rough estimate of the present-day correlation length r_0 can be obtained inverting the Limber equation and assuming an appropriate redshift distribution dN/dz. The results range between 12.8 and 9.8 h-1 Mpc in the S band and between 17.9 and 13.4 h-1 Mpc in the H band, with 30-40% statistical errors, assuming either smooth redshift distributions or redshift distributions with spikes accounting for the presence of a structure at z=0.4. The relative density of the S band sources is higher near the clusters and groups at z~0.4 and extends toward East and toward South/West. This suggests that the structure is complex, with a size comparable to the full XMM-Newton field. Conversely, the highest relative source densities of the H band sources are located in the central-west region of the field. To be published on A&A
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8df6dc5f2c9bda42eb69879722d0d4f https://doi.org/10.1051/0004-6361:20064904 Zobrazit plný text záznamu