cosmography_delay

Time delays from the literature
For a partial overview visit the [|Leiden group Hubble constant homepage].

The table below is based on the table from the Leiden group homepage (with some minor changes), with additional systems added at the bottom of the table.


 * System || zl || zs || references (D=discovery, ZL=lens z, ZS=source z, TD=delay) || time delays (days) || Environment || Comments ||
 * B1608+656 || 1.394 || 0.630 || [|[1]], Fassnacht et al. 2002, ApJ 581, 823, TD [|[2]], Myers et al. 1995, ApJ 447, L2, D, ZL [|[3]] Fassnacht et al. 1996, ApJ 460, L103, ZS || BA=31.5p3m2 BC=36pm2.5 BD=77p4m3 || group 150 km/s Fassnacht et al. 2004 (+los) || 95% CL ||
 * PG1115+080 || 1.722 || 0.31 || [|[4]]Weymann et al. 1980, Science, 118, 4, D, ZS [|[5]], Schechter et al. 1997, ApJ 475, L85, TD [|[6]] Tonry 1998, AJ 115, 1, ZL || //AB=13pm2 BC CD=11pm2// || group 440 km/s Momcheva et al. 2006 (+los) || Where are those values from? ||
 * HE1104-1805 || 2.32 || 0.73 || [|[7]], Wisotzki et al. 1993, AA 278, L15, D, ZS Kochanek et al. 2006, in prep, TD [|[8]], Lidman et al. 2000, AA 364, L62, ZL || AB=161pm7 || (small los?) || Ref. not public ||
 * HE2149-2745 || 2.03 || 0.49 0.50? || [|[9]], Wisotzki et al. 1996, AA 315, 405, D, ZS [|[10]], Burud et al. 2002, AA 383, 71, TD, ZL || AB=103pm12 || small los Momcheva et al. 2006 || 1sigma ||
 * B1600+434 || 1.59 || 0.42 || [|[11]] Jackson et al. 1995, MNRAS, 274, 25L, (D and ZS) [|[12]] Burud et al. 2000, ApJ, 544, 117(TD) [|[13]] Fassnacht, Cohen, 1998, AJ, 115, 377 (ZL) || AB=51pm4 || group 100 km/s Auger et al. 2004 || 95% CL ||
 * FBQ J0951+2635 || 1.24 || (0.24) || [|[14]] Schechter et al. 1998, ApJ, 115, 1371 (D) [|[15]] Jakobsson et al. 2005, A&A, 431, 103, (TD and ZL) || AB=16pm2 || several los groups Williams et al. 2006 || 1 sigma ||
 * HE0435-1223 || 1.689 || 0.46 || [|[16]] Wisotzki et al. 2002, A&A 395, 17 (D) [|[17]] Kochanek et al. 2006, (TD) [|[18]] Morgan et al. 2005, AJ, 129, 2531 (ZL) || AB=-8.0p0.7m0.8 AC=-2.1p0.8m0.7 AD=-14.4p0.8m0.9 || (los ?) || 1 or 2 sigma? ||
 * RX J1131-1231 || 0.658 || 0.295 || [|[19]] Sluse et al. 2003, (D and ZL) [|[20]], Morgan et al 2006 astro-ph/0605321(TD) || AB=11.98p1.52m1.27 AC=9.61p1.97m1.57 || group and los Williams et al. 2006 || 1 sigma ||
 * SBS1520+530 || 1.86 || 0.72 || [|[21]], Chavushyan et al 1997 AA 318, L67, D, ZS [|[22]], Burud et al. 2002, AA 391, 481, TD, ZL || AB=130pm3 || (los groups?) || 1 sigma ||
 * Q0957+561 ||  ||   || [|Vanderriest, C. et al, 1989, A&A, 215,1] (TD) || 415pm20 ||   || 1 or 2 sigma? ||
 * B1422+231 ||  ||   || [|Patnaik, A.R. &Narasimha, D., 2001, MNRAS, 326, 1403] (TD) || 1.5pm1.4 (B-A) 7.6pm2.5 (A-C) 8.2pm2.0 (B-C) || group 470 km/s Momcheva et al. 2006 || 1 or 2 sigma? ||
 * RX J0911+0551 ||  ||   || [|Hjorth, J. et al., 2002, ApJ, 572, 11L](TD) || 146pm8 ((A1+A2+A3)-B) ||   || 2 sigma ||
 * B2018+357 ||  ||   || [|Biggs, A.D. et al., MNRAS, 304, 349](TD) || 10.5pm0.4 ||   || 95% CL ||
 * PKS1830-211 ||  ||   || [|Lovell, J.E.J. et al., 1998, ApJ, 508, 51L](TD) || 26p4m5 ||   || Width of distribution at half peak ||
 * J1650+4251 ||  ||   || [|Vuissoz, C. et al., 2006, A&A submitted](TD) || 49.5pm1.9 ||   || 1 sigma ||
 * J1004+4112 ||  ||   || [|Fohlmeister, J. et al., 2006, ApJ submitted](TD) || 38.4pm2.0 ||   || at Delta Chi^2=4 ||
 * SBS0909+532 ||  ||   || [|Ullán, A. et al. 2006, A&A, 452, 25](TD) || 45p1m11 ||   || 95% CL ||

Ongoing efforts to measure time delays
[|GLENDAMA project]: Q0957+561, HE 1104-1805, Q2237+0305

[|COSMOGRAIL]: Goal to measure time delays with <2% precision, using 5 medium sized telescopes (1.2-2.0 m)

Kochanek, C and various collaborators (//any fancy name - homepage etc.?//).: J1004+4112, HE0435-1223, others?