%0 Generic %1 zahedy2015dissecting %A Zahedy, Fakhri S. %A Chen, Hsiao-Wen %A Rauch, Michael %A Wilson, Michelle L. %A Zabludoff, Ann %D 2015 %K circumgalactic lense medium multiphase %T Dissecting the Multiphase Circumgalactic Medium Around Three Massive Lensing Galaxies at z =0.4-0.7 %U http://arxiv.org/abs/1510.04307 %X (abridged) We present multi-sightline absorption spectroscopy of the inner gaseous halo around three lensing galaxies at z=0.4-0.7. Their spectral and photometric properties are characteristic of nearby passive elliptical galaxies with half-light radii of r_e=2.6-8 kpc and estimated total stellar masses of log M*/Ms=10.6-11.2. The lensed QSO sightlines pass through the gaseous halo of the lensing galaxy at projected distances d=3-15 kpc or (1-2) r_e. Our absorption-line search reveals a diverse range of cool (temperature T~10^4 K) halo gas properties among the three lensing galaxies. Specifically, while the quadruple lens for HE0435-1223 shows no trace of associated Mg II or other ionic absorption features to very sensitive limits in all four sightlines, strong MgII absorbers are found along both sightlines at the redshift of the double lens for HE0047-1756, and in one of the two sightlines at the redshift of the lens for HE1104-1805. In addition to Mg II, associated FeII, MgI, and CaII absorption transitions are detected. The absorbers are resolved into 8-15 individual components with a line-of-sight velocity spread of dv~300-600 km/s. The large ionic column densities observed in a few of the components suggest a significant neutral gas fraction comparable to what is expected for Lyman limit or damped Lya absorbers. The majority of the absorbing components exhibit a super solar Fe/Mg ratio, whose pattern is remarkably uniform with a scatter of <0.1 dex across the full dv. Given a predominantly old stellar population in these lensing galaxies, we argue that the Fe-rich gas (which dominates the total absorption width) originates in the SNe Ia enriched inner regions at radius r~d. Our study demonstrates that combining spatially resolved gas kinematics and relative (Fe/Mg) abundance pattern provides a powerful tool to resolve the origin of chemically-enriched cool gas in massive halos.

@misc{zahedy2015dissecting, abstract = {(abridged) We present multi-sightline absorption spectroscopy of the inner gaseous halo around three lensing galaxies at z=0.4-0.7. Their spectral and photometric properties are characteristic of nearby passive elliptical galaxies with half-light radii of r_e=2.6-8 kpc and estimated total stellar masses of log M*/Ms=10.6-11.2. The lensed QSO sightlines pass through the gaseous halo of the lensing galaxy at projected distances d=3-15 kpc or (1-2) r_e. Our absorption-line search reveals a diverse range of cool (temperature T~10^4 K) halo gas properties among the three lensing galaxies. Specifically, while the quadruple lens for HE0435-1223 shows no trace of associated Mg II or other ionic absorption features to very sensitive limits in all four sightlines, strong MgII absorbers are found along both sightlines at the redshift of the double lens for HE0047-1756, and in one of the two sightlines at the redshift of the lens for HE1104-1805. In addition to Mg II, associated FeII, MgI, and CaII absorption transitions are detected. The absorbers are resolved into 8-15 individual components with a line-of-sight velocity spread of dv~300-600 km/s. The large ionic column densities observed in a few of the components suggest a significant neutral gas fraction comparable to what is expected for Lyman limit or damped Lya absorbers. The majority of the absorbing components exhibit a super solar Fe/Mg ratio, whose pattern is remarkably uniform with a scatter of <0.1 dex across the full dv. Given a predominantly old stellar population in these lensing galaxies, we argue that the Fe-rich gas (which dominates the total absorption width) originates in the SNe Ia enriched inner regions at radius r~d. Our study demonstrates that combining spatially resolved gas kinematics and relative (Fe/Mg) abundance pattern provides a powerful tool to resolve the origin of chemically-enriched cool gas in massive halos.}, added-at = {2015-10-16T09:36:27.000+0200}, author = {Zahedy, Fakhri S. and Chen, Hsiao-Wen and Rauch, Michael and Wilson, Michelle L. and Zabludoff, Ann}, biburl = {https://www.bibsonomy.org/bibtex/29488534962543e5f9b39eae494aa1d07/miki}, description = {[1510.04307] Dissecting the Multiphase Circumgalactic Medium Around Three Massive Lensing Galaxies at z =0.4-0.7}, interhash = {79f5c60e7410d937f9da7b7b4017ddcb}, intrahash = {9488534962543e5f9b39eae494aa1d07}, keywords = {circumgalactic lense medium multiphase}, note = {cite arxiv:1510.04307Comment: 21 pages, 12 figures, submitted to MNRAS}, timestamp = {2015-10-16T09:36:27.000+0200}, title = {Dissecting the Multiphase Circumgalactic Medium Around Three Massive Lensing Galaxies at z =0.4-0.7}, url = {http://arxiv.org/abs/1510.04307}, year = 2015 }