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arXiv 2102.05353astro-ph.EPastro-ph.SR
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带碎片盘的系统中行星存在的限制:HD 92945 与 HD 107146

Limits on the presence of planets in systems with debris disks: HD 92945 and HD 107146

D. Mesa, S. Marino, M. Bonavita, C. Lazzoni, C. Fontanive, S. Perez, V. D'Orazi, S. Desidera, R. Gratton, N. Engler, T. Henning, M. Janson, Q. Kral, M. Langlois… 展开作者

D. Mesa, S. Marino, M. Bonavita, C. Lazzoni, C. Fontanive, S. Perez, V. D'Orazi, S. Desidera, R. Gratton, N. Engler, T. Henning, M. Janson, Q. Kral, M. Langlois, S. Messina, J. Milli, N. Pawellek, C. Perrot, E. Rigliaco, E. Rickman, V. Squicciarini, A. Vigan, Z. Wahhaj, A. Zurlo, A. Boccaletti, M. Bonnefoy, G. Chauvin, V. De Caprio, M. Feldt, L. Gluck, J. Hagelberg, M. Keppler, A. -M. Lagrange, R. Launhardt, A. -L. Maire, M. Meyer, O. Moeller-Nilsson, A. Pavlov, M. Samland, T. Schmidt, L. Weber

AI总结:

本研究通过SPHERE观测结合天体测量与视向速度数据,对HD 92945和HD 107146两个带间隙碎片盘系统中的行星质量与轨道间距施加约束,排除了部分行星系统构型。

摘要:

近期对数十天文单位(au)处已分辨的冷碎片盘的观测表明,间隙可能是这类柯伊伯带类似物的普遍特征。这类间隙可能是间隙内或更靠近盘边缘处存在行星的证据。我们展示了对HD 92945和HD 107146这两个已探测到间隙的系统的SPHERE(光谱偏振高对比度系外行星研究)观测结果。我们将造成间隙的可能伴星质量限制为:位于间隙内的行星质量为1-2倍木星质量(M Jup),在距主星低至20 au的间距处的行星质量小于5 M Jup。这些限制使我们能够排除为解释这两颗恒星周围盘形状而提出的行星系统的一些可能构型。为了在直接成像数据效果较差的、距恒星极短间距处对质量施加更严格的限制,我们还将数据与Hipparcos和Gaia的天体测量数据以及视向速度测量数据相结合。我们能够将可能导致HD 107146自行异常的伴星的间距和质量分别限制在2-7 au和2-5 M Jup的范围内。

英文摘要:

Recent observations of resolved cold debris disks at tens of au have revealed that gaps could be a common feature in these Kuiper belt analogues. Such gaps could be evidence for the presence of planets within the gaps or closer-in near the edges of the disk. We present SPHERE observations of HD 92945 and HD 107146, two systems with detected gaps. We constrained the mass of possible companions responsible for the gap to 1-2 M Jup for planets located inside the gap and to less than 5 M Jup for separations down to 20 au from the host star. These limits allow us to exclude some of the possible configurations of the planetary systems proposed to explain the shape of the disks around these two stars. In order to put tighter limits on the mass at very short separations from the star, where direct imaging data are less effective, we also combined our data with astrometric measurements from Hipparcos and Gaia and radial velocity measurements. We were able to limit the separation and the mass of the companion potentially responsible for the proper motion anomaly of HD 107146 to values of 2-7 au and 2-5 M Jup , respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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