MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay

doi:10.1051/0004-6361/201527422

	MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay
	Giannini, E.1; Schmidt, R. W.1; Wambsganss, J.1; Alsubai, K.2; Andersen, J. M.3,4; Anguita, T.5,38; Bozza, V.7,8; Bramich, D. M.2; Browne, P.10; Novati, S. Calchi 7,13,36
刊名	ASTRONOMY & ASTROPHYSICS
	2017-01
卷号	597
关键词	Gravitational Lensing: Micro Techniques: Photometric Quasars: General
ISSN号	0004-6361
DOI	10.1051/0004-6361/201527422
产权排序	第41完成单位
文献子类	Article
英文摘要	Aims. We present V and R photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756. The data were taken by the MiNDSTEp collaboration with the 1.54 m Danish telescope at the ESO La Silla observatory from 2008 to 2012. Methods. Differential photometry has been carried out using the image subtraction method as implemented in the HOTPAnTS package, additionally using GALFIT for quasar photometry. Results. The quasar WFI 2033-4723 showed brightness variations of order 0.5 mag in V and R during the campaign. The two lensed components of quasar HE 0047-1756 varied by 0.2-0.3 mag within five years. We provide, for the first time, an estimate of the time delay of component B with respect to A of Delta t = (7.6 +/- 1.8) days for this object. We also find evidence for a secular evolution of the magnitude difference between components A and B in both filters, which we explain as due to a long-duration microlensing event. Finally we find that both quasars WFI 2033-4723 and HE 0047-1756 become bluer when brighter, which is consistent with previous studies.
学科主题	天文学 ; 天体物理学 ; 实测天体物理学
URL标识	查看原文
出版地	17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
资助项目	FONDECYT proyecto[11130630] ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative[IC120009] ; NPRP from the Qatar National Research Fund (a member of Qatar Foundation)[NPRP-09-476-1-78] ; NPRP from the Qatar National Research Fund (a member of Qatar Foundation)[X-019-1-006] ; Villum foundation ; European Union[268421] ; KASI travel grant[2012-1-410-02] ; Korea Research Council for Fundamental Science and Technology (KRCF) ; Spanish Ministry of Economy and Competitiveness (MINECO)[MINECO SEV-2011-0187] ; Danish National Research Foundation[DNRF106] ; ASTERISK project - European Research Council[267864] ; Communaute francaise de Belgique - Actions de recherche concertees - Academie Wallonie-Europe ; International Max Planck Research School for Astrophysics (IMPRS-HD) ; HGSFP ; Science and Technology Facilities Council[ST/L000768/1]
WOS关键词	HAMBURG ESO SURVEY ; BRIGHT QSOS ; LENSING EXPERIMENT ; IMAGE SUBTRACTION ; COLOR VARIATIONS ; HE 0435-1223 ; COSMOGRAIL ; REDSHIFT ; GALAXY ; FLUX
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	EDP SCIENCES S A
WOS记录号	WOS:000392392900016
资助机构	FONDECYT proyecto[11130630] ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative[IC120009] ; NPRP from the Qatar National Research Fund (a member of Qatar Foundation)[NPRP-09-476-1-78, X-019-1-006] ; Villum foundation ; European Union[268421] ; KASI travel grant[2012-1-410-02] ; Korea Research Council for Fundamental Science and Technology (KRCF) ; Spanish Ministry of Economy and Competitiveness (MINECO)[MINECO SEV-2011-0187] ; Danish National Research Foundation[DNRF106] ; ASTERISK project - European Research Council[267864] ; Communaute francaise de Belgique - Actions de recherche concertees - Academie Wallonie-Europe ; International Max Planck Research School for Astrophysics (IMPRS-HD) ; HGSFP ; Science and Technology Facilities Council[ST/L000768/1]
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9917]
专题	云南天文台_系外行星研究组云南天文台_中国科学院天体结构与演化重点实验室
通讯作者	Giannini, E.
作者单位	1.Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany 2.Qatar Environment and Energy Research Institute (QEERI), HBKU, Qatar Foundation, Doha, Qatar 3.Department of Astronomy, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USA 4.Niels Bohr Institute & Centre for Star and Planet Formation, University of Copenhagen Øster Voldgade 5, 1350 Copenhagen, Denmark 5.Departamento de Ciencias Físicas, Universidad Andres Bello, Avenida República 220, Santiago, Chile 6.Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany 7.Dipartimento di Fisica “E. R. Caianiello”, Università di Salerno, via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy 8.Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, 80126 Napoli, Italy 9.European Southern Observatory, Karl-Schwarzschild-Straße 2, 85748 Garching bei München, Germany 10.SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews, KY16 9SS, UK
推荐引用方式 GB/T 7714	Giannini, E.,Schmidt, R. W.,Wambsganss, J.,et al. MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay[J]. ASTRONOMY & ASTROPHYSICS,2017,597.
APA	Giannini, E..,Schmidt, R. W..,Wambsganss, J..,Alsubai, K..,Andersen, J. M..,...&Zimmer, F..(2017).MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay.ASTRONOMY & ASTROPHYSICS,597.
MLA	Giannini, E.,et al."MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE0047-1756: microlensing and a new time delay".ASTRONOMY & ASTROPHYSICS 597(2017).