Flux and color variations of the doubly imaged quasar UM673

D. Ricci, A. Elyiv, F. Finet, O. Wertz, K. Alsubai, T. Anguita, V. Bozza, P. Browne, M. Burgdorf, S. Calchi Novati, P. Dodds, M. Dominik, S. Dreizler, T. Gerner, M. Glitrup, F. Grundahl, S. Hardis, K. Harpsøe, T. C. Hinse, A. HornstrupM. Hundertmark, U. G. Jørgensen, N. Kains, E. Kerins, C. Liebig, G. Maier, L. Mancini, G. Masi, M. Mathiasen, M. Penny, S. Proft, S. Rahvar, G. Scarpetta, K. Sahu, S. Schäfer, F. Schönebeck, R. Schmidt, J. Skottfelt, C. Snodgrass, J. Southworth, C. C. Thöne, J. Wambsganss, F. Zimmer, M. Zub, J. Surdej

Resultado de la investigación: Article

5 Citas (Scopus)

Resumen

Aims. With 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. Methods. The observations were carried out in the VRi spectral bands during four seasons (2008-2011). We reduced the data using the point spread function photometric technique as well as aperture photometry. Results. Our 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 the V/R/i spectral 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.

Idioma originalEnglish
Número de artículoA104
PublicaciónAstronomy and Astrophysics
Volumen551
DOI
EstadoPublished - 11 mar 2013

Huella dactilar

quasars
spectral bands
color
point spread functions
photometry
observatories
observatory
apertures
telescopes
galaxies
spectral band
method

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Ricci, D., Elyiv, A., Finet, F., Wertz, O., Alsubai, K., Anguita, T., ... Surdej, J. (2013). Flux and color variations of the doubly imaged quasar UM673. Astronomy and Astrophysics, 551, [A104]. https://doi.org/10.1051/0004-6361/201118755
Ricci, D. ; Elyiv, A. ; Finet, F. ; Wertz, O. ; Alsubai, K. ; Anguita, T. ; Bozza, V. ; Browne, P. ; Burgdorf, M. ; Calchi Novati, S. ; Dodds, P. ; Dominik, M. ; Dreizler, S. ; Gerner, T. ; Glitrup, M. ; Grundahl, F. ; Hardis, S. ; Harpsøe, K. ; Hinse, T. C. ; Hornstrup, A. ; Hundertmark, M. ; Jørgensen, U. G. ; Kains, N. ; Kerins, E. ; Liebig, C. ; Maier, G. ; Mancini, L. ; Masi, G. ; Mathiasen, M. ; Penny, M. ; Proft, S. ; Rahvar, S. ; Scarpetta, G. ; Sahu, K. ; Schäfer, S. ; Schönebeck, F. ; Schmidt, R. ; Skottfelt, J. ; Snodgrass, C. ; Southworth, J. ; Thöne, C. C. ; Wambsganss, J. ; Zimmer, F. ; Zub, M. ; Surdej, J. / Flux and color variations of the doubly imaged quasar UM673. En: Astronomy and Astrophysics. 2013 ; Vol. 551.
@article{25aa9d3a39594463a76ebd127b878591,
title = "Flux and color variations of the doubly imaged quasar UM673",
abstract = "Aims. With 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. Methods. The observations were carried out in the VRi spectral bands during four seasons (2008-2011). We reduced the data using the point spread function photometric technique as well as aperture photometry. Results. Our 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 the V/R/i spectral 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.",
keywords = "Gravitational lensing: strong, Quasars: general, Quasars: individual: UM673, Techniques: photometric",
author = "D. Ricci and A. Elyiv and F. Finet and O. Wertz and K. Alsubai and T. Anguita and V. Bozza and P. Browne and M. Burgdorf and {Calchi Novati}, S. and P. Dodds and M. Dominik and S. Dreizler and T. Gerner and M. Glitrup and F. Grundahl and S. Hardis and K. Harps{\o}e and Hinse, {T. C.} and A. Hornstrup and M. Hundertmark and J{\o}rgensen, {U. G.} and N. Kains and E. Kerins and C. Liebig and G. Maier and L. Mancini and G. Masi and M. Mathiasen and M. Penny and S. Proft and S. Rahvar and G. Scarpetta and K. Sahu and S. Sch{\"a}fer and F. Sch{\"o}nebeck and R. Schmidt and J. Skottfelt and C. Snodgrass and J. Southworth and Th{\"o}ne, {C. C.} and J. Wambsganss and F. Zimmer and M. Zub and J. Surdej",
year = "2013",
month = "3",
day = "11",
doi = "10.1051/0004-6361/201118755",
language = "English",
volume = "551",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",

}

Ricci, D, Elyiv, A, Finet, F, Wertz, O, Alsubai, K, Anguita, T, Bozza, V, Browne, P, Burgdorf, M, Calchi Novati, S, Dodds, P, Dominik, M, Dreizler, S, Gerner, T, Glitrup, M, Grundahl, F, Hardis, S, Harpsøe, K, Hinse, TC, Hornstrup, A, Hundertmark, M, Jørgensen, UG, Kains, N, Kerins, E, Liebig, C, Maier, G, Mancini, L, Masi, G, Mathiasen, M, Penny, M, Proft, S, Rahvar, S, Scarpetta, G, Sahu, K, Schäfer, S, Schönebeck, F, Schmidt, R, Skottfelt, J, Snodgrass, C, Southworth, J, Thöne, CC, Wambsganss, J, Zimmer, F, Zub, M & Surdej, J 2013, 'Flux and color variations of the doubly imaged quasar UM673', Astronomy and Astrophysics, vol. 551, A104. https://doi.org/10.1051/0004-6361/201118755

Flux and color variations of the doubly imaged quasar UM673. / Ricci, D.; Elyiv, A.; Finet, F.; Wertz, O.; Alsubai, K.; Anguita, T.; Bozza, V.; Browne, P.; Burgdorf, M.; Calchi Novati, S.; Dodds, P.; Dominik, M.; Dreizler, S.; Gerner, T.; Glitrup, M.; Grundahl, F.; Hardis, S.; Harpsøe, K.; Hinse, T. C.; Hornstrup, A.; Hundertmark, M.; Jørgensen, U. G.; Kains, N.; Kerins, E.; Liebig, C.; Maier, G.; Mancini, L.; Masi, G.; Mathiasen, M.; Penny, M.; Proft, S.; Rahvar, S.; Scarpetta, G.; Sahu, K.; Schäfer, S.; Schönebeck, F.; Schmidt, R.; Skottfelt, J.; Snodgrass, C.; Southworth, J.; Thöne, C. C.; Wambsganss, J.; Zimmer, F.; Zub, M.; Surdej, J.

En: Astronomy and Astrophysics, Vol. 551, A104, 11.03.2013.

Resultado de la investigación: Article

TY - JOUR

T1 - Flux and color variations of the doubly imaged quasar UM673

AU - Ricci, D.

AU - Elyiv, A.

AU - Finet, F.

AU - Wertz, O.

AU - Alsubai, K.

AU - Anguita, T.

AU - Bozza, V.

AU - Browne, P.

AU - Burgdorf, M.

AU - Calchi Novati, S.

AU - Dodds, P.

AU - Dominik, M.

AU - Dreizler, S.

AU - Gerner, T.

AU - Glitrup, M.

AU - Grundahl, F.

AU - Hardis, S.

AU - Harpsøe, K.

AU - Hinse, T. C.

AU - Hornstrup, A.

AU - Hundertmark, M.

AU - Jørgensen, U. G.

AU - Kains, N.

AU - Kerins, E.

AU - Liebig, C.

AU - Maier, G.

AU - Mancini, L.

AU - Masi, G.

AU - Mathiasen, M.

AU - Penny, M.

AU - Proft, S.

AU - Rahvar, S.

AU - Scarpetta, G.

AU - Sahu, K.

AU - Schäfer, S.

AU - Schönebeck, F.

AU - Schmidt, R.

AU - Skottfelt, J.

AU - Snodgrass, C.

AU - Southworth, J.

AU - Thöne, C. C.

AU - Wambsganss, J.

AU - Zimmer, F.

AU - Zub, M.

AU - Surdej, J.

PY - 2013/3/11

Y1 - 2013/3/11

N2 - Aims. With 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. Methods. The observations were carried out in the VRi spectral bands during four seasons (2008-2011). We reduced the data using the point spread function photometric technique as well as aperture photometry. Results. Our 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 the V/R/i spectral 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.

AB - Aims. With 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. Methods. The observations were carried out in the VRi spectral bands during four seasons (2008-2011). We reduced the data using the point spread function photometric technique as well as aperture photometry. Results. Our 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 the V/R/i spectral 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.

KW - Gravitational lensing: strong

KW - Quasars: general

KW - Quasars: individual: UM673

KW - Techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=84874608683&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201118755

DO - 10.1051/0004-6361/201118755

M3 - Article

AN - SCOPUS:84874608683

VL - 551

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - A104

ER -