论文标题
与紫外线了解星系合并和AGN反馈
Understanding Galaxy Mergers & AGN Feedback with UVIT
论文作者
论文摘要
模拟期望在星系合并期间有增强的恒星形成和活跃的银河核（AGN）活性，这会导致形成二进制/双AGN。 AGN反馈可以增强或抑制恒星形成。我们已经对Astrosat的紫外线成像望远镜（UVIT）进行了10个双核星系样品的试点研究。在这里，我们提供了两个样品星系（MRK 739，ESO 509）和另一个星系的深度波长数据（MRK 212）的初始结果。紫外线观察结果表明，MRK 739和MRK 212中AGN反馈正反馈的签名以及ESO 509中的负反馈。最近批准了更深入的紫外线观察。这些将在这些系统中对恒星形成以及AGN的反馈提供更好的限制。
Simulations expect an enhanced star-formation and active galactic nuclei (AGN) activity during galaxy mergers, which can lead to formation of binary/dual AGN. AGN feedback can enhance or suppress star-formation. We have carried out a pilot study of a sample of 10 dual nuclei galaxies with AstroSat's Ultraviolet Imaging Telescope (UVIT). Here, we present the initial results for two sample galaxies (Mrk 739, ESO 509) and deep multi-wavelength data of another galaxy (Mrk 212). UVIT observations have revealed signatures of positive AGN feedback in Mrk 739 and Mrk 212, and negative feedback in ESO 509. Deeper UVIT observations have recently been approved; these will provide better constraints on star-formation as well as AGN feedback in these systems.
