Back to Search
Start Over
Survey of Gravitationally Lensed Objects in HSC Imaging (SuGOHI)
- Source :
- Monthly Notices of the Royal Astronomical Society, 502(1), 1487-1493
- Publication Year :
- 2021
-
Abstract
- We present spectroscopic confirmation of three new two-image gravitationally lensed quasars, compiled from existing strong lens and X-ray catalogs. Images of HSC J091843.27$-$022007.5 show a red galaxy with two blue point sources at either side, separated by 2.26 arcsec. This system has a source and a lens redshifts $z_s=0.804$ and $z_{\ell}=0.459$, respectively, as obtained by our follow-up spectroscopic data. CXCO J100201.50$+$020330.0 shows two point sources separated by 0.85 arcsec on either side of an early-type galaxy. The follow-up spectroscopic data confirm the fainter quasar has the same redshift with the brighter quasar from the SDSS fiber spectrum at $z_s=2.016$. The deflecting foreground galaxy is a typical early-type galaxy at a redshift of $z_{\ell}=0.439$. SDSS J135944.21$+$012809.8 has two point sources with quasar spectra at the same redshift $z_s=1.096$, separated by 1.05 arcsec, and fits to the HSC images confirm the presence of a galaxy between these. These discoveries demonstrate the power of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP)'s deep imaging and wide sky coverage. Combined with existing X-ray source catalogues and follow-up spectroscopy, the HSC-SSP provides us unique opportunities to find multiple-image quasars lensed by a foreground galaxy.<br />Comment: Accepted for publication in MNRAS, 7 pages, 3 figures (add credit to Claude Cornen)
- Subjects :
- ii
Gravitational lensing: strong
media_common.quotation_subject
Astrophysics - astrophysics of galaxies
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Spectral line
Methods: observational
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
Spectroscopy
dark energy
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
media_common
Physics
search
010308 nuclear & particles physics
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Quasar
space warps
cosmos
Methods observational
Galaxy
Redshift
1st data release
x-ray
Space and Planetary Science
Sky
Astrophysics of Galaxies (astro-ph.GA)
digital sky survey
constraints
camera
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society, 502(1), 1487-1493
- Accession number :
- edsair.doi.dedup.....2c41e6e200bd80cc352a60622549a82a