Gaia Gral：Gaia DR2重力透镜系统。 vi。光谱确认和四次成像的类星体的建模

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Gaia Gral：Gaia DR2重力透镜系统。 vi。光谱确认和四次成像的类星体的建模

Gaia GraL: Gaia DR2 Gravitational Lens Systems. VI. Spectroscopic Confirmation and Modeling of Quadruply-Imaged Lensed Quasars

论文作者

Stern, D., Djorgovski, S. G., Krone-Martins, A., Sluse, D., Delchambre, L., Ducourant, C., Teixeira, R., Surdej, J., Boehm, C., Brok, J. den, Dobie, D., Drake, A., Galluccio, L., Graham, M. J., Jalan, P., Klark, J., LeCampion, J. F., Mahabal, A., Mignard, F., Murphy, T., Nierenberg, A., Scarano, S., Simon, J., Slezak, E., Spindola-Duarte, C., Wambsganss, J.

论文摘要

Combining the exquisite angular resolution of Gaia with optical light curves and WISE photometry, the Gaia Gravitational Lenses group (GraL) uses machine learning techniques to identify candidate strongly lensed quasars, and has confirmed over two dozen new strongly lensed quasars from the Gaia Data Release 2. This paper reports on the 12 quadruply-imaged quasars identified by this effort to date, which is approximately a 20% increase in确认的四次成像的类星体的总数。我们讨论候选选择，光谱随访和镜头建模。我们还报告了光谱失败，以帮助未来的调查。

Combining the exquisite angular resolution of Gaia with optical light curves and WISE photometry, the Gaia Gravitational Lenses group (GraL) uses machine learning techniques to identify candidate strongly lensed quasars, and has confirmed over two dozen new strongly lensed quasars from the Gaia Data Release 2. This paper reports on the 12 quadruply-imaged quasars identified by this effort to date, which is approximately a 20% increase in the total number of confirmed quadruply-imaged quasars. We discuss the candidate selection, spectroscopic follow-up, and lens modeling. We also report our spectroscopic failures as an aid for future investigations.

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