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THE EINSTEIN CROSS: CONSTRAINT ON DARK MATTER FROM STELLAR DYNAMICS AND GRAVITATIONAL LENSING

Abstract:

We present two-dimensional line-of-sight stellar kinematics of the lens galaxy in the Einstein Cross, obtained with the GEMINI 8 m telescope, using the GMOS integral-field spectrograph. The stellar kinematics extend to a radius of 4″ (with 0.″2 spaxels), covering about two-thirds of the effective (or half-light) radius Re - 6″ of this early-type spiral galaxy at redshift zl ≃ 0.04, of which the bulge is lensing a background quasar at redshift zs ≃ 1.7. The velocity map shows regular rotation ...

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Publication status:
Published

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Authors


van de Ven, G More by this author
Falcon-Barroso, J More by this author
McDermid, RM More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Miller, BW More by this author
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Journal:
ASTROPHYSICAL JOURNAL
Volume:
719
Issue:
2
Pages:
1481-1496
Publication date:
2010-08-20
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
URN:
uuid:d13ba21f-3b57-4d9c-b1bc-eea565dbda74
Source identifiers:
67593
Local pid:
pubs:67593

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