Reference : Deep imaging of AXJ2019+112: The luminosity of a ``Dark Cluster''
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/33571
Deep imaging of AXJ2019+112: The luminosity of a ``Dark Cluster''
English
Benitez, N. mailto [Astronomy Department, UC Berkeley, 601 Campbell Hall, Berkeley 94720-3411, USA,]
Broadhurst, T. [Astronomy Department, UC Berkeley, 601 Campbell Hall, Berkeley 94720-3411, USA]
Rosati, P. [European Southern Observatory, D-85748, Garching, Germany]
Courbin, F. [Institut d'Astrophysique et de Geophysique, Universite de Liege, 5, Avenue de Cointe, B-4000 Liege, Belgium and URA 173 CNRS-DAEC, Observatoire de Paris, F-92195 Meudon Principal CEDEX, France]
Squires, G. [Astronomy Department, UC Berkeley, 601 Campbell Hall, Berkeley 94720-3411, USA]
Lidman, C. [European Southern Observatory, D-85748, Garching, Germany]
Magain, Pierre mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
1-Dec-1998
19th Texas Symposium on Relativistic Astrophysics and Cosmology
Paul, J.
Montmerle, T.
Aubourg, E.
504
No
No
International
19th Texas Symposium on Relativistic Astrophysics and Cosmology
du 14 décembre 1998 au 18 décembre 1998
Paris
France
[en] We detect a distant cluster of galaxies at z ~1 centered on the QSO lens and luminous X-ray source AXJ2019+112 (Hattori et al 1997). The mass-to-light ratio within an aperture of 0.4 h ^{-1}Mpc determined using the X-ray temperature is M_x / L_V = 190^{+95}_{-66}h(M/L_V)[SUB]sun[/SUB]. The strong lens model yields a compatible value, M/L_V = 315^{+80}_{-80}h(M/L_V)[SUB]sun[/SUB], whereas an independent weak lensing analysis sets an upper limit of M/L_V < 440 h(M/L_V)[SUB]sun[/SUB]. This confirms that AXJ2019+112 has a M/L ratio similar to that of z < 1 massive clusters.
http://hdl.handle.net/2268/33571
http://adsabs.harvard.edu/abs/1998tx19.confE.504B

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