Статья

QSO 2237+0305<i>VR</i>Light Curves from Gravitational LensES International Time Project Optical Monitoring

D. AlcaldeInstituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38205 La Laguna, Tenerife, SpainE. MediavillaInstituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38205 La Laguna, Tenerife, SpainO. MoreauInstitut d’Astrophysique et de Géophysique, Université de Liège, Alée du 6 Août 17 B5c, B-4000 Sart Tilman, BelgiumJ. A. MunozInstituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38205 La Laguna, Tenerife, SpainC. LibbrechtInstitut d’Astrophysique et de Géophysique, Université de Liège, Alée du 6 Août 17 B5c, B-4000 Sart Tilman, BelgiumL. J. GoicoecheaDepartamento de Física Moderna, Universidad de Cantabria, Avda. de Los Castros s/n, E-39005 Santander, Cantabria, SpainJ. SurdejInstitut d’Astrophysique et de Géophysique, Université de Liège, Alée du 6 Août 17 B5c, B-4000 Sart Tilman, BelgiumE. PugaCurrent address: Max-Planck-Institut für Astronomie, Königstuhl 17, Heidelberg, GermanyY. De RopInstitut d’Astrophysique et de Géophysique, Université de Liège, Alée du 6 Août 17 B5c, B-4000 Sart Tilman, BelgiumR. BarrenaInstituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38205 La Laguna, Tenerife, SpainR. Gil‐MerinoDepartamento de Física Moderna, Universidad de Cantabria, Avda. de Los Castros s/n, E-39005 Santander, Cantabria, SpainB. A. McLeodHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138V. MottaDepartamento de Astronomía, Facultad de Ciencias, Iguá 4225, 11400 Montevideo, UruguayA. OscozInstituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38205 La Laguna, Tenerife, SpainM. Serra‐RicartInstituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain

2002en

ABI

Аннотация

We present VR observations of QSO 2237+0305 conducted by the GLITP collaboration from 1999 October 1 to 2000 February 3. The observations were made with the 2.56 m Nordic Optical Telescope at Roque de los Muchachos Observatory, La Palma (Spain). The PSF fitting method and an adapted version of the ISIS subtraction method have been used to derive the VR light curves of the four components (A-D) of the quasar. The mean errors range in the intervals 0.01-0.04 mag (PSF fitting) and 0.01-0.02 mag (ISIS subtraction), with the faintest component (D) having the largest uncertainties. We address the relatively good agreement between the A-D light curves derived using different filters, photometric techniques, and telescopes. The new VR light curves of component A extend the time coverage of a high magnification microlensing peak, which was discovered by the OGLE team.

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Идентификаторы

DOI: 10.1086/340343

Цитирования и источники

Цитирований: 7Использованных источников: 0

Показатели — AkademScholar