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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20170427T103000
DTEND;TZID=Atlantic/Canary:20170427T113000
UID:iactalks-1015
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1015
CREATED:2017-04-27T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The BOSS Emission-Line Lens Survey: Strong Lensing of Lyα Emitters
  by Individual Galaxies
DESCRIPTION:The BOSS Emission-Line Lens Survey: Strong Lensing of Lyα Emit
 ters by Individual Galaxies\nDr. Yiping Shu\n\nWe present Hubble Space Tel
 escope (HST) F606W-band imaging observations of 21 galaxy-Lyα emitte
 r lens candidates in the Baryon Oscillation Spectroscopic Survey (BOSS) Em
 ission-Line Lens Survey (BELLS) for GALaxy-Lyα EmitteR sYstems (BELL
 S GALLERY) survey. 17 systems are confirmed to be definite lenses with una
 mbiguous evidence of multiple imaging. The lenses are primarily massive ea
 rly-type galaxies (ETGs) at redshifts of approximately 0.55, while the len
 sed sources are Lyα emitters (LAEs) at redshifts from 2 to 3. The HS
 T imaging data are well fit by smooth lens models consisting of singular i
 sothermal ellipsoids in an external shear field. The Einstein radii of the
  BELLS GALLERY lenses are on average 60% larger than those of the BELLS le
 nses because of the much higher source redshifts which will allow a detail
 ed investigation of the radius evolution of the mass profile in ETGs. With
  the aid of the average ∼ 13× lensing magnification, the LAEs ar
 e resolved to comprise individual star-forming knots of a wide range of pr
 operties with characteristic sizes from less than 100 pc to several kpc, r
 est-frame far UV apparent AB magnitudes from 29.6 to 24.2, and typical pro
 jected separations of 500 pc to 2 kpc.
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