%0 Generic %1 rubin2017andromedas %A Rubin, Kate H. R. %A O'Meara, John M. %A Cooksey, Kathy L. %A Matuszewski, Mateusz %A Rizzi, Luca %A Doppmann, Gregory W. %A Kwok, Shui Hung %A Martin, D. Christopher %A Morrissey, Patrick %A Neill, James D. %D 2017 %K absorption ifu lense %T Andromeda's Parachute: A Bright Quadruply Lensed Quasar at z=2.377 %U http://arxiv.org/abs/1707.05873 %X We present Keck Cosmic Web Imager spectroscopy of the four putative images of the lensed quasar candidate J014709+463037 recently discovered by Berghea et al. (2017). The data verify the source as a quadruply lensed, broad absorption-line quasar having z_S = 2.377 +/- 0.007. We detect intervening absorption in the FeII 2586, 2600, MgII 2796, 2803, and/or CIV 1548, 1550 transitions in eight foreground systems, three of which have redshifts consistent with the photometric-redshift estimate reported for the lensing galaxy (z_L ~ 0.57). By virtue of their positions on the sky, the source images probe these absorbers over transverse physical scales of ~0.3-21 kpc, permitting assessment of the variation in metal-line equivalent width W_r as a function of sight-line separation. We measure differences in W_r,2796 of <40% across all sight-line pairs subtending 7-21 kpc, suggestive of a high degree of spatial coherence for MgII-absorbing material. W_r,2600 is observed to vary by >50% over the same scales across the majority of sight-line pairs, while CIV absorption exhibits a wide range in W_r,1548 differences of ~5-80% within transverse distances less than ~3 kpc. J014709+463037 is one of only a handful of z > 2 quadruply lensed systems for which all four source images are very bright (r = 15.4-17.7 mag) and are easily separated in ground-based seeing conditions. As such, it is an ideal candidate for higher-resolution spectroscopy probing the spatial variation in the kinematic structure and physical state of intervening absorbers.

@misc{rubin2017andromedas, abstract = {We present Keck Cosmic Web Imager spectroscopy of the four putative images of the lensed quasar candidate J014709+463037 recently discovered by Berghea et al. (2017). The data verify the source as a quadruply lensed, broad absorption-line quasar having z_S = 2.377 +/- 0.007. We detect intervening absorption in the FeII 2586, 2600, MgII 2796, 2803, and/or CIV 1548, 1550 transitions in eight foreground systems, three of which have redshifts consistent with the photometric-redshift estimate reported for the lensing galaxy (z_L ~ 0.57). By virtue of their positions on the sky, the source images probe these absorbers over transverse physical scales of ~0.3-21 kpc, permitting assessment of the variation in metal-line equivalent width W_r as a function of sight-line separation. We measure differences in W_r,2796 of <40% across all sight-line pairs subtending 7-21 kpc, suggestive of a high degree of spatial coherence for MgII-absorbing material. W_r,2600 is observed to vary by >50% over the same scales across the majority of sight-line pairs, while CIV absorption exhibits a wide range in W_r,1548 differences of ~5-80% within transverse distances less than ~3 kpc. J014709+463037 is one of only a handful of z > 2 quadruply lensed systems for which all four source images are very bright (r = 15.4-17.7 mag) and are easily separated in ground-based seeing conditions. As such, it is an ideal candidate for higher-resolution spectroscopy probing the spatial variation in the kinematic structure and physical state of intervening absorbers.}, added-at = {2017-07-20T11:44:18.000+0200}, author = {Rubin, Kate H. R. and O'Meara, John M. and Cooksey, Kathy L. and Matuszewski, Mateusz and Rizzi, Luca and Doppmann, Gregory W. and Kwok, Shui Hung and Martin, D. Christopher and Morrissey, Patrick and Neill, James D.}, biburl = {https://www.bibsonomy.org/bibtex/214125368d5e2198f628c5f2258aa2c74/miki}, description = {[1707.05873] Andromeda's Parachute: A Bright Quadruply Lensed Quasar at z=2.377}, interhash = {6c375867a56b6681c199c216ec4ef696}, intrahash = {14125368d5e2198f628c5f2258aa2c74}, keywords = {absorption ifu lense}, note = {cite arxiv:1707.05873Comment: Submitted to ApJL. 9 pages, 3 figures. Uses aastex61 format}, timestamp = {2017-07-20T11:44:18.000+0200}, title = {Andromeda's Parachute: A Bright Quadruply Lensed Quasar at z=2.377}, url = {http://arxiv.org/abs/1707.05873}, year = 2017 }