First catalog of strong lens candidates in the COSMOS field
Cecile Faure
(1)
,
Jean-Paul Kneib
(2)
,
Giovanni Covone
(3, 4)
,
Lidia Tasca
(2)
,
Alexie Leauthaud
(2)
,
Peter Capak
(5, 6)
,
Knud Jahnke
(6)
,
Vernesa Smolcic
(6)
,
Sylvain de La Torre
(7)
,
Richard Ellis
(5)
,
Alexis Finoguenov
(6)
,
Anton Koekemoer
(8)
,
Olivier Le Fevre
(2)
,
Richard Massey
(5)
,
Yannick Mellier
(9, 10, 11)
,
Alexandre Refregier
(12)
,
Jason D. Rhodes
(13, 14)
,
Nick Scoville
(5)
,
Eva Schinnerer
(5)
,
James Taylor
(15, 16, 17)
,
Ludovic van Waerbeke
(10, 18)
,
Jakob Walcher
(2)
1
ARI -
Astronomische Rechen-Institut [Heidelberg]
2 LAM - Laboratoire d'Astrophysique de Marseille
3 INFN, Sezione di Napoli - Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
4 OAC - INAF - Osservatorio Astronomico di Capodimonte
5 CALTECH - California Institute of Technology
6 MPIA - Max-Planck-Institut für Astronomie
7 AUTRES
8 STSci - Space Telescope Science Institute
9 DEMIRM - Departement de Radioastronomie Millimétrique
10 IAP - Institut d'Astrophysique de Paris
11 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
12 DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée
13 JPL - Jet Propulsion Laboratory
14 Department of Mathematics [Berkeley]
15 Department of Physics and Astronomy [Leicester]
16 University of Toronto
17 Department of Physics [Toronto]
18 CITA - Canadian Institute for Theoretical Astrophysics
2 LAM - Laboratoire d'Astrophysique de Marseille
3 INFN, Sezione di Napoli - Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
4 OAC - INAF - Osservatorio Astronomico di Capodimonte
5 CALTECH - California Institute of Technology
6 MPIA - Max-Planck-Institut für Astronomie
7 AUTRES
8 STSci - Space Telescope Science Institute
9 DEMIRM - Departement de Radioastronomie Millimétrique
10 IAP - Institut d'Astrophysique de Paris
11 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
12 DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée
13 JPL - Jet Propulsion Laboratory
14 Department of Mathematics [Berkeley]
15 Department of Physics and Astronomy [Leicester]
16 University of Toronto
17 Department of Physics [Toronto]
18 CITA - Canadian Institute for Theoretical Astrophysics
Jean-Paul Kneib
- Fonction : Auteur
- PersonId : 755990
- ORCID : 0000-0002-4616-4989
- IdRef : 069878765
Lidia Tasca
- Fonction : Auteur
- PersonId : 1196277
- IdHAL : lidiatasca
- ORCID : 0000-0001-8560-5073
Alexie Leauthaud
- Fonction : Auteur
- PersonId : 757711
- ORCID : 0000-0002-3677-3617
Peter Capak
- Fonction : Auteur
- PersonId : 757663
- ORCID : 0000-0003-3578-6843
Sylvain de La Torre
- Fonction : Auteur
- PersonId : 21320
- IdHAL : sylvain-de-la-torre
- IdRef : 133617238
Alexis Finoguenov
- Fonction : Auteur
- PersonId : 756645
- ORCID : 0000-0002-4606-5403
Anton Koekemoer
- Fonction : Auteur
- PersonId : 757710
- ORCID : 0000-0002-6610-2048
- IdRef : 074043412
Olivier Le Fevre
- Fonction : Auteur
- PersonId : 17465
- IdHAL : olivier-le-fevre
- ORCID : 0000-0001-5891-2596
- IdRef : 070374678
Richard Massey
- Fonction : Auteur
- PersonId : 757595
- ORCID : 0000-0002-6085-3780
Eva Schinnerer
- Fonction : Auteur
- PersonId : 756650
- ORCID : 0000-0002-3933-7677
James Taylor
- Fonction : Auteur
- PersonId : 184137
- IdHAL : james-taylor
- ORCID : 0000-0001-9709-8689
Résumé
We present the first catalog of 67 strong galaxy-galaxy lens candidates discovered in the 1.64 square degree Hubble Space Telescope COSMOS survey. Twenty of these systems display multiple images or strongly curved large arcs. Our initial search is performed by visual inspection of the data and is restricted, for practical considerations, to massive early-type lens galaxies with arcs found at radii smaller than ~5''. Simple mass models are constructed for the best lens candidates and our results are compared to the strong lensing catalogs of the SLACS survey and the CASTLES database. These new strong galaxy-galaxy lensing systems constitute a valuable sample to study the mass distribution of early-type galaxies and their associated dark matter halos. We further expect this sample to play an important role in the testing of software algorithms designed to automatically search for strong gravitational lenses. From our analysis a robust lower limit is derived for the expected occurrence of strong galaxy-galaxy systems in current and future space-based wide-field imaging surveys. We expect that such surveys should uncover a large number of strong lensing systems (more than 10 systems per square degree), which will allow for a detailed statistical analysis of galaxy properties and will likely lead to constraints on models of gravitational structure formation and cosmology. The sample of strong lenses is available here: http://cosmosstronglensing.uni-hd.de/