卡门犬在M矮人周围寻找系外行星。测量近红外的精确径向速度：超级收获CD CET B的示例

论文标题

卡门犬在M矮人周围寻找系外行星。测量近红外的精确径向速度：超级收获CD CET B的示例

The CARMENES search for exoplanets around M dwarfs. Measuring precise radial velocities in the near infrared: the example of the super-Earth CD Cet b

论文作者

Bauer, F. F., Zechmeister, M., Kaminski, A., López, C. Rodríguez, Caballero, J. A., Azzaro, M., Stahl, O., Kossakowski, D., Quirrenbach, A., Jarque, S. Becerril, Rodríguez, E., Amado, P. J., Seifert, W., Reiners, A., Schäfer, S., Ribas, I., Béjar, V. J. S., Cortés-Contreras, M., Dreizler, S., Hatzes, A., Henning, T., Jeffers, S. V., Kürster, M., Lafarga, M., Montes, D., Morales, J. C., Schmitt, J. H. M. M., Schweitzer, A., Solano, E.

论文摘要

高分辨率，双频道，可见和近红外光谱仪卡梅尼斯为M矮人提供了令人兴奋的恒星和超球门研究机会。在这项工作中，我们解决了通过复杂，积极冷却的低温仪器（例如近红外通道）达到最高径向速度精度的挑战。我们描述了仪器的性能以及用于从光谱中得出精确多普勒测量值的工作流程。两种carmenes通道的能力都以附近的M5.0 V星CD CET（GJ 1057）的示例来检测小型系外行星，我们在2.29 d Orbit上宣布了超级地球（$ 4.0 \ pm0.4 \，M_ \ oplus $）。

The high-resolution, dual channel, visible and near-infrared spectrograph CARMENES offers exciting opportunities for stellar and exoplanetary research on M dwarfs. In this work we address the challenge of reaching the highest radial velocity precision possible with a complex, actively cooled, cryogenic instrument, such as the near-infrared channel. We describe the performance of the instrument and the work flow used to derive precise Doppler measurements from the spectra. The capability of both CARMENES channels to detect small exoplanets is demonstrated with the example of the nearby M5.0 V star CD Cet (GJ 1057), around which we announce a super-Earth ($4.0\pm0.4\,M_\oplus$) companion on a 2.29 d orbit.

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