Flux and color variations of the doubly imaged quasar UM673
Flux and color variations of the doubly imaged quasar UM673
复制标题
双成像类星体 UM673 的通量和颜色变化
DOI:
10.1051/0004-6361/201118755
复制
发表时间:
2013
影响因子:
6.5
通讯作者:
Ricci D
中科院分区:
文献类型:
--
作者:
Ricci D
AimsWith the aim of characterizing the flux and color variations of the multiple components of the gravitationally lensed quasar UM673 as a function of time, we have performed multiepoch and multiband photometric observations with the Danish telescope at the La Silla Observatory.MethodsThe observations were carried out in theVRispectral bands during four seasons (2008–2011). We reduced the data using the point spread function photometric technique as well as aperture photometry.ResultsOur results show for the brightest lensed component some significant decrease in flux between the first two seasons (+ 0.09/+ 0.11/+ 0.05 mag) and a subsequent increase during the following ones (− 0.11/− 0.11/− 0.10 mag) in theV/R/ispectral bands, respectively. Comparing our results with previous studies, we find smaller color variations between these seasons as compared with previous ones. We also separate the contribution of the lensing galaxy from that of the fainter and close lensed component.
登录
查看更多内容
影响因子:
1.9
作者:
J. A. Muñoz;E. Falco;C. Kochanek;J. Lehár;B. McLeod;C. Impey;H. Rix;C. Peng
通讯作者:
J. A. Muñoz;E. Falco;C. Kochanek;J. Lehár;B. McLeod;C. Impey;H. Rix;C. Peng
DOI:
10.1086/171187
发表时间:
1992
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Smette;J. Surdej;P. Shaver;C. Foltz;F. Chaffee;R. Weymann;Robert Williams;P. Magain
通讯作者:
P. Magain
影响因子:
64.8
作者:
J. Surdej;P. Magain;J. Swings;U. Borgeest;T. Courvoisier;R. Kayser;K. Kellermann;H. Kühr;S. Refsdal
通讯作者:
S. Refsdal
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
J. Lehár;E. Falco;C. Kochanek;B. McLeod;J. A. Muñoz;C. Impey;H. Rix;C. Keeton;D. Peng
通讯作者:
D. Peng
影响因子:
0.9
作者:
M. Dominik;U. Jørgensen;N. Rattenbury;M. Mathiasen;T. Hinse;T. Hinse;S. Novati;K. Harpsoe;V. Bozza;T. Anguita;M. Burgdorf;K. Horne;M. Hundertmark;E. Kerins;P. Kjærgaard;C. Liebig;L. Mancini;G. Masi;S. Rahvar;D. Ricci;G. Scarpetta;C. Snodgrass;J. Southworth;R. Street;J. Surdej;C. Thöne;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub
通讯作者:
M. Dominik;U. Jørgensen;N. Rattenbury;M. Mathiasen;T. Hinse;T. Hinse;S. Novati;K. Harpsoe;V. Bozza;T. Anguita;M. Burgdorf;K. Horne;M. Hundertmark;E. Kerins;P. Kjærgaard;C. Liebig;L. Mancini;G. Masi;S. Rahvar;D. Ricci;G. Scarpetta;C. Snodgrass;J. Southworth;R. Street;J. Surdej;C. Thöne;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub