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Decomposition of the Visible and Dark Matter Mass Profiles in the Einstein Ring 0047–2808

Published online by Cambridge University Press:  26 May 2016

Simon Dye  and
Steve Warren
Simon Dye
Affiliation:
Astrophysics Group, Imperial College London, Blackett Labs, Prince Consort Road, London, SW7 2BW, U.K.
Steve Warren
Affiliation:
Astrophysics Group, Imperial College London, Blackett Labs, Prince Consort Road, London, SW7 2BW, U.K.

Abstract

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Using our semi-linear inversion method, we measure the mass profile of the lens galaxy in the Einstein ring system 0047–2808. The lens is modeled as a baryonic component following the observed light embedded in a generalised dark matter NFW halo. The semi-linear method makes full use of the information content in the ring image. We determine a B-band mass to light ratio for the baryons of 2.33+0.30–0.62h M⊙/LB⊙ (99% CL), accounting for 54% of the total projected mass within the Einstein radius of 1.16″. The inner logarithmic slope of the halo is found to be 0.65+0.73–0.31 (99% CL). We find that the halo is fairly well aligned with the light but has only half the ellipticity.

Type
Part 4: Lensing
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 115 - 120
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Bullock, J.S., Kollat, T.S., Sigad, Y., Somerville, R.S., Kravtsov, A.V., Klypin, A.A., Primack, J.R., Deckel, A., 2001, MNRAS, 321, 598.CrossRefGoogle Scholar
Dye, S. & Warren, S.J., 2003, ApJ, submitted.Google Scholar
Hoekstra, H., Yee, H.K.C., Gladders, M.D., 2003, astro-ph/0306515.Google Scholar
Keeton, C.R., 2001, astro-ph/0102341.Google Scholar
Kochanek, C.S., Keeton, C.R., & McLeod, B.A., 2001, ApJ, 547, 50.CrossRefGoogle Scholar
Koopmans, L.V.E. & Treu, T., 2003, ApJ, 583, 606.CrossRefGoogle Scholar
Moore, B., Quinn, T., Governato, F., Stadel, J., Lake, G, 1999, MNRAS, 310, 1147.CrossRefGoogle Scholar
Navarro, J.F., Frenk, C.S., & White, S.D.M., 1996, ApJ, 462, 563.CrossRefGoogle Scholar
Power, C., Navarro, J.F., Jenkins, A., Frenk, C.S., White, S.D.M., Springel, V., Stadel, J., Quinn, T., 2003, MNRAS, 338, 14.CrossRefGoogle Scholar
Press, W.H., Teukolsky, S.A., Vetterling, W.T., Flannery, B.P., 2001, ‘Numerical Recipes in Fortran 77, 2nd Edition’, Cambridge University Press.Google Scholar
Sersic, J.L., 1968, Cordoba, Argentina: Observatorio Astronomico (1968).Google Scholar
Wallington, S., Kochanek, C.S., & Narayan, R., 1996, ApJ, 465, 64.CrossRefGoogle Scholar
Warren, S.J., Hewett, P.C., Lewis, G.F., Møller, P., Iovino, A., Shaver, P.A., 1996, MNRAS, 278, 139.Google Scholar
Warren, S.J. & Dye, S., 2003, ApJ, 590, 673.CrossRefGoogle Scholar
Wayth, R.B., Warren, S.J., Lewis, G.F., Hewett, P.C., 2003, MNRAS, in prep.Google Scholar