Gemini-LIGHTS: Herbig Ae/Be and Massive T Tauri Protoplanetary Disks Imaged with Gemini Planet Imager-猫眼课题宝

DOI：

10.3847/1538-3881/ac7be4

发表时间：

2022-06

期刊：

The Astronomical Journal

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

Evan A. Rich;J. Monnier;A. Aarnio;A. Laws;B. Setterholm;D. Wilner;N. Calvet;T. Harries;Chris Miller;C. Davies;F. Adams;S. Andrews;J. Bae;C. Espaillat;A. Greenbaum;S. Hinkley;S. Kraus;L. Hartmann;A. Isella;M. McClure;R. Oppenheimer;L. P'erez;Zhaohuan Zhu

我们展示了双子座行星成像仪赫比格/金牛座T巡天的大成像的原行星盘的完整样本，它在近红外偏光下观察了明亮的赫比格Ae/Be恒星和金牛座T恒星，以寻找盘演化和正在进行的行星形成的特征。这44个目标是根据它们的近红外和中红外颜色来选择的，它们具有大致相同数量的过渡、预过渡和完整的磁盘。我们的方法明确不支持众所周知的，“著名的”磁盘或那些被阿塔卡马大型毫米/亚毫米阵列观测到的磁盘，导致一个较少偏差的样本适合探测行星形成过程中磁盘演化的主要阶段。我们优化的数据缩减允许偏振通量低至0.002%的恒星光被检测到，我们报告偏振散射光约80%的目标。我们在47%的目标上发现了点状伴星，包括三颗褐矮星（两颗已确认，一颗新发现），以及V1295 Aql周围一颗新发现的超级木星质量候选者。我们搜索了极化通量与系统参数之间的相关性，发现了一些明确的趋势：伴星的存在极大地降低了极化通量水平，远红外过剩与非二元系统的极化通量相关，并且拥有环状结构的圆盘的系统周围有100 au的恒星质量散射光，这些神秘系统极端年轻的迹象。科学就绪的图像通过多个分发渠道公开提供，使用新的FITS文件标准，该标准是与甚大望远镜光谱偏振高对比度系外行星研究团队成员共同开发的。

We present the complete sample of protoplanetary disks from the Gemini- Large Imaging with the Gemini Planet Imager Herbig/T Tauri Survey, which observed bright Herbig Ae/Be stars and T Tauri stars in near-infrared polarized light to search for signatures of disk evolution and ongoing planet formation. The 44 targets were chosen based on their near- and mid-infrared colors, with roughly equal numbers of transitional, pre-transitional, and full disks. Our approach explicitly did not favor well-known, “famous” disks or those observed by the Atacama Large Millimeter/submillimeter Array, resulting in a less-biased sample suitable to probe the major stages of disk evolution during planet formation. Our optimized data reduction allowed polarized flux as low as 0.002% of the stellar light to be detected, and we report polarized scattered light around 80% of our targets. We detected point-like companions for 47% of the targets, including three brown dwarfs (two confirmed, one new), and a new super-Jupiter-mass candidate around V1295 Aql. We searched for correlations between the polarized flux and system parameters, finding a few clear trends: the presence of a companion drastically reduces the polarized flux levels, far-IR excess correlates with polarized flux for nonbinary systems, and systems hosting disks with ring structures have stellar masses 100 au) scattered light around each, signs of extreme youth for these enigmatic systems. Science-ready images are publicly available through multiple distribution channels using a new FITS file standard that has been jointly developed with members of the Very Large Telescope Spectro-polarimetric High-contrast Exoplanet Research team.

Gemini-LIGHTS: Herbig Ae/Be and Massive T Tauri Protoplanetary Disks Imaged with Gemini Planet Imager

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