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Optical identification of the ASCA Lynx Deep Survey: An association of quasi-stellar objects and a supercluster at z = 1.3?

Astrophysical Journal 598:1 I (2003) 210-215

Authors:

K Ohta, M Akiyama, Y Ueda, T Yamada, K Nakanishi, GB Dalton, Y Ogasaka, T Kii, K Hayashida

Abstract:

Results of optical identification of the ASCA Lynx Deep Survey are presented. Six X-ray sources are detected in the 2-7 keV band using the Solid-State Imaging Spectrometer in a ∼20′ × 20′ field of view with fluxes larger than ∼4 × 10-14 ergs s -1 cm-2 in the band. Follow-up optical spectroscopic observations were made, and five out of six sources are identified with active galactic nuclei/quasi-stellar objects (AGNs/QSOs) at redshifts of 0.5-1.3. We also identify two more additional X-ray sources detected in a soft X-ray band with AGNs/QSOs. We find that three QSOs identified are located at z ∼ 1.3. Two rich clusters and several groups of galaxies are also placed at the same redshift in the surveyed field, and projected separations between the QSOs and the clusters are 3-8 Mpc at the redshift.
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Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS

(2003)

Authors:

Michael Balogh, Vince Eke, Chris Miller, Ian Lewis, Richard Bower, Warrick Couch, Robert Nichol, Joss Bland-Hawthorn, Ivan K Baldry, Carlton Baugh, Terry Bridges, Russell Cannon, Shaun Cole, Matthew Colless, Chris Collins, Nicholas Cross, Gavin Dalton, Roberto De Propris, Simon P Driver, George Efstathiou, Richard S Ellis, Carlos S Frenk, Karl Glazebrook, Percy Gomez, Alex Gray, Edward Hawkins, Carole Jackson, Ofer Lahav, Stuart Lumsden, Steve Maddox, Darren Madgwick, Peder Norberg, John A Peacock, Will Percival, Bruce A Peterson, Will Sutherland, Keith Taylor
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OASIS High-Resolution Integral Field Spectroscopy of the SAURON Ellipticals and Lenticulars

(2003)

Authors:

R McDermid, E Emsellem, M Cappellari, H Kuntschner, R Bacon, M Bureau, Y Copin, RL Davies, J Falcon-Barroso, P Ferruit, D Krajnovic, RF Peletier, K Shapiro, F Wernli, PT de Zeeuw
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A SAURON look at galaxy bulges

(2003)

Authors:

J Falcón-Barroso, R Bacon, M Bureau, M Cappellari, RL Davies, E Emsellem, D Krajnovic, H Kuntschner, R McDermid, RF Peletier, PT de Zeeuw
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SAURON dynamical modeling of NGC 2974

(2003)

Authors:

Davor Krajnovic, Michele Cappellari, Eric Emsellem, Richard McDermid, P Tim de Zeeuw
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