A gravitationally lensed quasar discovered in OGLE
A gravitationally lensed quasar discovered in OGLE
复制标题
OGLE 中发现的引力透镜类星体
DOI:
10.1093/mnras/sty259
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发表时间:
2018
影响因子:
4.8
通讯作者:
Kostrzewa-Rutkowska Z
中科院分区:
文献类型:
--
作者:
Kostrzewa-Rutkowska Z
We report the discovery of a new gravitationally lensed quasar (double) from the Optical Gravitational Lensing Experiment (OGLE) identified inside the ∼670deg2area encompassing the Magellanic Clouds. The source was selected as one of ∼60 ‘redW1 −W2’ mid-infrared objects fromWISEand having a significant amount of variability in OGLE for both two (or more) nearby sources. This is the first detection of a gravitational lens, where the discovery is made ‘the other way around’, meaning we first measured the time delay between the two lensed quasar images of −132 <tAB< −76 d (90 per cent CL), with the mediantAB≈ −102 d (in the observer frame), and where the fainter image B lags image A. The system consists of the two quasar images separated by 1.5 arcsec on the sky, withI≈ 20.0 mag andI≈ 19.6 mag, respectively, and a lensing galaxy that becomes detectable asI≈ 21.5 mag source, 1.0 arcsec from image A, after subtracting the two lensed images. Both quasar images show clear AGN broad emission lines atz= 2.16 in the New Technology Telescope spectra. The spectral energy distribution (SED) fitting with the fixed source redshift provided the estimate of the lensing galaxy redshift ofz≈ 0.9 ± 0.2 (90 per cent CL), while its type is more likely to be elliptical (the SED-inferred and lens-model stellar mass is more likely present in ellipticals) than spiral (preferred redshift by the lens model).
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DOI:
--
发表时间:
2016
期刊:
arXiv: Instrumentation and Methods for Astrophysics
影响因子:
--
作者:
J. Skowron;A. Udalski;S. Kozłowski;M. Szyma'nski;P. Mr'oz;L. Wyrzykowski;R. Poleski;P. Pietrukowicz;K. Ulaczyk;M. Pawlak;I. Soszy'nski
通讯作者:
I. Soszy'nski
影响因子:
3.5
作者:
J. Greiner;W. Bornemann;C. Clemens;M. Deuter;G. Hasinger;M. Honsberg;H. Huber;S. Huber;M. Krauss;T. Krühler;A. Yoldas;H. Mayer-Hasselwander;B. Mican;N. Primak;F. Schrey;I. Steiner;I. Steiner;G. Szokoly;C. Thöne;C. Thöne;A. Yoldas;S. Klose;U. Laux;J. Winkler
通讯作者:
J. Greiner;W. Bornemann;C. Clemens;M. Deuter;G. Hasinger;M. Honsberg;H. Huber;S. Huber;M. Krauss;T. Krühler;A. Yoldas;H. Mayer-Hasselwander;B. Mican;N. Primak;F. Schrey;I. Steiner;I. Steiner;G. Szokoly;C. Thöne;C. Thöne;A. Yoldas;S. Klose;U. Laux;J. Winkler
DOI:
10.1086/305031
发表时间:
1998
期刊:
The Astrophysical Journal
影响因子:
--
作者:
L. Goicoechea;A. Oscoz;E. Mediavilla;J. Buitrago;M. Serra
通讯作者:
M. Serra
影响因子:
1.9
作者:
L. Bianchi;J. Herald;B. Efremova;Léo Girardi;A. Zabot;P. Marigo;Alberto Conti;B. Shiao
通讯作者:
L. Bianchi;J. Herald;B. Efremova;Léo Girardi;A. Zabot;P. Marigo;Alberto Conti;B. Shiao
DOI:
10.1086/341481
发表时间:
2002-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
J. Wyithe;E. Turner
通讯作者:
J. Wyithe;E. Turner