重力+宽：朝数百个Z $ \ SIM $ 2 AGN

论文标题

重力+宽：朝数百个Z $ \ SIM $ 2 AGN

GRAVITY+ Wide: Towards hundreds of z $\sim$ 2 AGN

论文作者

Drescher, A., Fabricius, M., Shimizu, T., Woillez, J., Bourget, P., Widmann, F., Shangguan, J., Straubmeier, C., Horrobin, M., Schuhler, N., Eisenhauer, F., Gonté, F., Gillessen, S., Ott, T., Perrin, G., Paumard, T., Brandner, W., Kreidberg, L., Perraut, K., Bouquin, J. -B. Le, Garcia, P., Hönig, S., Defrère, D., Bourdarot, G., Feuchtgruber, H., Genzel, R., Hartl, M., Haussmann, F., Lutz, D., More, N., Rau, C., Sauter, J., Uysal, S., Wessely, P., Wieprecht, E., Wimmer, L., Yazici, S.

论文摘要

作为重力$^{+} $项目的一部分，近红外梁组合仪重力和VLTI目前正在进行一系列重大升级，以进一步改善性能和天空覆盖率。仪器变化将是转化的，例如，在两个及更高的红移处观察数百个活性银河核（AGN）的宽线区域。增加的天空覆盖范围是通过将天体科学对象（SC）和离轴边缘跟踪（ft）恒星扩大到目前2个电弧秒（ARCSEC）之间的最大角度分离，直到前所未有的30 Arcsec，受到大气条件的限制。这是第一次在VLTI上成功证明的。

As part of the GRAVITY$^{+}$ project, the near-infrared beam combiner GRAVITY and the VLTI are currently undergoing a series of significant upgrades to further improve the performance and sky coverage. The instrumental changes will be transformational, and for instance uniquely position GRAVITY to observe the broad line region of hundreds of Active Galactic Nuclei (AGN) at a redshift of two and higher. The increased sky coverage is achieved by enlarging the maximum angular separation between the celestial science object (SC) and the off-axis fringe tracking (FT) star from currently 2 arcseconds (arcsec) up to unprecedented 30 arcsec, limited by the atmospheric conditions. This was successfully demonstrated at the VLTI for the first time.

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