Deep Extragalactic VIsible Legacy Survey (DEVILS): DR1 Blended Spectra Search for Candidate Strong Gravitational Lenses. (arXiv:2111.10475v2 [astro-ph.GA] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Holwerda_B/0/1/0/all/0/1">B. W. Holwerda</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Knabel_S/0/1/0/all/0/1">S. Knabel</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Thorne_J/0/1/0/all/0/1">J. E Thorne</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bellstedt_S/0/1/0/all/0/1">S. Bellstedt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Siudek_M/0/1/0/all/0/1">M. Siudek</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Davies_L/0/1/0/all/0/1">L. J. M. Davies</a>
Here, we present a catalog of blended spectra in Data Release 1 of the Deep
Extragalactic VIsible Legacy Survey (DEVILS) on the Anglo-Australian Telescope
(AAT). Of the 23197 spectra, 181 showed signs of a blend of redshifts and
spectral templates. We examine these blends in detail for signs of either a
candidate strong lensing galaxy or a useful overlapping galaxy pair.
One of the three DEVILS target fields, COSMOS (D10) is close to complete and
it is fully imaged with Hubble Space Telescope Advanced Camera for Surveys
(HST/ACS) and we visually examine the 57 blended spectra in this field in the
F814W postage stamps. Nine are classical strong lensing candidates with an
elliptical as the lens, out to higher redshifts than any previous search with
spectroscopic surveys such as SDSS or GAMA. The gravitational lens candidate
success rate similar to earlier such searches (0.1%).
Strong gravitational lenses identified with blended spectroscopy have
typically shown a high success rate (>70%) which make these interesting targets
for future higher resolution lensing studies, monitoring for supernovae
cosmography, or searches for magnified atomic hydrogen signal.
Here, we present a catalog of blended spectra in Data Release 1 of the Deep
Extragalactic VIsible Legacy Survey (DEVILS) on the Anglo-Australian Telescope
(AAT). Of the 23197 spectra, 181 showed signs of a blend of redshifts and
spectral templates. We examine these blends in detail for signs of either a
candidate strong lensing galaxy or a useful overlapping galaxy pair.
One of the three DEVILS target fields, COSMOS (D10) is close to complete and
it is fully imaged with Hubble Space Telescope Advanced Camera for Surveys
(HST/ACS) and we visually examine the 57 blended spectra in this field in the
F814W postage stamps. Nine are classical strong lensing candidates with an
elliptical as the lens, out to higher redshifts than any previous search with
spectroscopic surveys such as SDSS or GAMA. The gravitational lens candidate
success rate similar to earlier such searches (0.1%).
Strong gravitational lenses identified with blended spectroscopy have
typically shown a high success rate (>70%) which make these interesting targets
for future higher resolution lensing studies, monitoring for supernovae
cosmography, or searches for magnified atomic hydrogen signal.
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