u g r i 2013-03-18T10:08:00 100 Gravitational arc candidates in the CFHTLS-Archive-Research Survey CARS Candidate gravitational arcs in the 37 deg^2 of CFHTLS-Archive-Research Survey (CARS). The data include their post-stamp images, astrometry, photometry (u*,g',r',i'), geometric properties (length, length-to-width ratio, profile curvature, area), and photometric redshifts. The arc candidates were selected booth with an automatic arcfinder, based on a tailored image segmentation and a color selection, and by visually inspecting the survey. Maturi, M. http://dc.g-vo.org/carsarcs/q/s/static/arcs-logo_letters.png Mizera, S.; Seidel, G. 2014A&A...567A.111M strong-gravitational-lensing luminous-arcs galaxy-clusters dark-matter Canada-France-Hawaii Telescope MegaPrime camera If you use this data, please cite the paper Maturi et al, 2014, given in the source metadata Optical Infrared /cars/q/prod/form Updated data after journal review, publishing the service. //scs#pgs-pos-indexMagnitudes, redshifts, positions, etc. of the arcs found in CARS. band, ucd u, em.opt.U g, em.opt.V r, em.opt.R i, em.opt.I The last character of the id is the detection type. This can be: a satisfies all criteria except color selection b was detected by the arcfinder but rejected by the geometrical constraints (L>15 pix, L/W<4) c was detected only by eye-ball checking This flag takes the following values: 1 "unlikely": arc structures which seem physically associated to an astrophysical object, or which are relatively far from a possible lens 2 "unclear": arc structures with a very promising shape but still being of dubious origin 3 "unclear": a clear arc structure which curvature is displaced in such a way to "enclose" a possible lens cause of its origin, i.e. large ellipticals or significant concentrations of galaxies. 5/4419,4422,4758 6/10741,10743,10745,10747,10750-10751,17668,17671,17681-17683,17685-17686,17692,17694,17712-17713,19021,19027,19030,19036-19038,19056,19060,36793,36795 2.31e-19 6.621e-19 matid, segment_id, carsfield, raj2000, dej2000, arc_length, arc_l_w, arc_curv, arc_area, uprime, err_uprime, gprime, err_gprime, rprime, err_rprime, iprime, err_iprime, z_lens, z_lens_err_plus, z_lens_err_minus, qual_ass, catnr carsarcs scs 210.5267 52.952 0.001 data/images s/scs.xml res = self.getFirstVOTableRow() self.assertAlmostEqual(res["arc_length"], 0.00056944397510) self.assertTrue(res['preview'].endswith( "/carsarcs/q/s/static/color/arc81c_W3m3m2-8649b_label.jpg")) self.assertTrue(res["img_r"].endswith( 'carsarcs/q/s/static/fits/W3m3m2-8649b-r.fits')) # no conversion here self.assertEqual(res["arc_curv"], 1476.0) s/static/color/arc81c_W3m3m2-8649b_label.jpg self.assertHasStrings("JFIF") s/form W3m3m2", # that would be the converted arc_curv "1.00", 'W3m3m2-8649b-u.fits') ]]>