2008AJ....135..512O

Query : 2008AJ....135..512O

2008AJ....135..512O - Astron. J., 135, 512-519 (2008/February-0)

The Sloan Digital Sky Survey Quasar Lens Search. III. Constraints on dark energy from the third Data Release quasar lens catalog.

OGURI M., INADA N., STRAUSS M.A., KOCHANEK C.S., RICHARDS G.T., SCHNEIDER D.P., BECKER R.H., FUKUGITA M., GREGG M.D., HALL P.B., HENNAWI J.F., JOHNSTON D.E., KAYO I., KEETON C.R., PINDOR B., SHIN M.-S., TURNER E.L., WHITE R.L., YORK D.G., ANDERSON S.F., BAHCALL N.A., BRUNNER R.J., BURLES S., CASTANDER F.J., CHIU K., CLOCCHIATTI A., EISENSTEIN D., FRIEMAN J.A., KAWANO Y., LUPTON R., MOROKUMA T., RIX H.-W., SCRANTON R. and SHELDON E.S.

Abstract (from CDS):

We present cosmological results from the statistics of lensed quasars in the Sloan Digital Sky Survey (SDSS) Quasar Lens Search. By taking proper account of the selection function, we compute the expected number of quasars lensed by early-type galaxies and their image separation distribution assuming a flat universe, which is then compared with seven lenses found in the SDSS Data Release 3 to derive constraints on dark energy under strictly controlled criteria. For a cosmological constant model (w = -1) we obtain ΩΛ = 0.74+0.11–0.15(stat.)+0.13–0.06(syst.). Allowing w to be a free parameter we find ΩM= 0.26+0.07–0.06(stat.)+0.03–0.05(syst.) and w = -1.1±0.6(stat.)+0.3–0.5(syst.) when combined with the constraint from the measurement of baryon acoustic oscillations in the SDSS luminous red galaxy sample. Our results are in good agreement with earlier lensing constraints obtained using radio lenses, and provide additional confirmation of the presence of dark energy consistent with a cosmological constant, derived independently of type Ia supernovae.

Abstract Copyright: ∼

Journal keyword(s): cosmological parameters - cosmology: theory - gravitational lensing

CDS comments: In Table.1 SBS 0909+523 is a misprint for SBS 0909+532.

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [VV2006] J024634.1-082536 QSO 02 46 34.1073782928 -08 25 36.209854308   18.42 18.20 17.94   ~ 59 1
2 QSO B0909+532A LeI 09 12.7 +53 00           ~ 24 1
3 QSO B0909+532B LeI 09 12.7 +53 00           ~ 24 1
4 QSO J0924+0219 QSO 09 24 55.8048 +02 19 24.850   18.58 18.36     ~ 142 1
5 8C 0958+561 QSO 10 01 20.6918953728 +55 53 55.593949272   17.16 16.95     ~ 757 3
6 [VV2006] J100128.5+502758 QSO 10 01 28.6132 +50 27 56.970   17.90 17.70     ~ 55 1
7 QSO J1004+4112C LeQ 10 04 33.8292372048 +41 12 34.730027748   19.81 19.68     ~ 47 0
8 [VV2006] J102111.0+491330 QSO 10 21 11.0253 +49 13 30.344   19.49 19.33     ~ 30 1
9 QSO J1226-0006 QSO 12 26 08.0332 -00 06 02.284   19.03 18.54     ~ 53 1
10 [VV2006] J133222.6+034739 QSO 13 32 22.6294 +03 47 39.912   18.99 18.54     ~ 34 0
11 LBQS 1333+0133 QSO 13 35 34.7884118928 +01 18 05.531756724   18.39 18.17     ~ 62 2
12 [VV2006] J152445.6+440949 QSO 15 24 45.5906889216 +44 09 49.476880764   19.98 19.42     ~ 29 0

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