VRI photometry of the Einstein Cross Q2237+0305 at Maidanak observatory

Details VRI photometry of the Einstein Cross Q2237+0305 at Maidanak observatory VRI photometry of the Einstein Cross Q2237+0305 at Maidanak observatory

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997an....318...73v&link_type=abstract

Astronomische Nachrichten, vol. 318, no. 2, p. 73.

Astronomy and Astrophysics

Astronomy

19

Scientific paper

Observations of the gravitationally lensed quasar Q2237+0305 were made with the 1.5-meter AZT-22 telescope at Maidanak (Uzbekistan) on 17-19 September 1995. All four components of the quasar are clearly resolved. The results of photometric measurements of the components are presented. It is confirmed that the component A again became the brightest one in the system. A noticeable change of the mutual colours of the components A and B in comparison with previous observations is detected and discussed. We cannot decide, on the basis of existing observational data, whether varying extinction or "chromatic" microlensing is the cause. Stronger, correlated colour changes in the system are probably caused by quasar variability. The dominant time scale of the microlensing-governed brightness variations since the discovery is of the order of 10 years. A correlation between radio brightness and optical colour is found but cannot be explained.

Affiliated with

Also associated with

No associations

Rating

VRI photometry of the Einstein Cross Q2237+0305 at Maidanak observatory does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with VRI photometry of the Einstein Cross Q2237+0305 at Maidanak observatory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and VRI photometry of the Einstein Cross Q2237+0305 at Maidanak observatory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1774081