Looking at the Fundamental Plane through a Gravitational Lens | Zendy

G. Bertin | Zendy; Marco Lombardi | Zendy

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Looking at the Fundamental Plane through a Gravitational Lens

Author(s) -

G. Bertin,

Marco Lombardi

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/507298

Subject(s) - physics , gravitational lens , mass distribution , fundamental plane (elliptical galaxies) , galaxy , lens (geology) , gravitation , plane (geometry) , dimensionless quantity , degeneracy (biology) , galaxy cluster , measure (data warehouse) , astrophysics , elliptical galaxy , classical mechanics , optics , geometry , lenticular galaxy , redshift , computer science , quantum mechanics , mathematics , biology , database , bioinformatics

We consider the Fundamental Plane of elliptical galaxies lensed by thegravitational field of a massive deflector (typically, a cluster of galaxies).We show that the Fundamental Plane relation provides a straightforwardmeasurement of the projected mass distribution of the lens with a typicalaccuracy of ~0.15 in the dimensionless column density kappa. The proposedtechnique breaks the mass-sheet degeneracy completely and is thus expected toserve as an important complement to other lensing-based analyses. Moreover, itsability to measure directly the mass distribution on the small pencil beamsthat characterize the size of background galaxies may lead to crucial tests forcurrent scenarios of structure formation.Comment: ApJL, in pres

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