arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.01684astro-ph.EPastro-ph.IMastro-ph.SR
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CARMENES搜寻M矮星周围的系外行星。在近红外线测量精确的径向速度:超级地球CD Cet b的例子

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

F. F. Bauer, M. Zechmeister, A. Kaminski, C. Rodríguez López, J. A. Caballero, M. Azzaro, O. Stahl, D. Kossakowski, A. Quirrenbach, S. Becerril Jarque, E. Rodrí… 展开作者

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

摘要:

高分辨率,双通道,可见光和近红外光谱仪CARMENES为M矮星的恒星和系外行星研究提供了令人兴奋的机会。在这项工作中,我们解决的挑战,达到最高的径向速度精度可能与复杂的,主动冷却,低温仪器,如近红外通道。我们描述的仪器的性能和工作流程,用于获得精确的多普勒测量的频谱。这两个CARMENES通道的能力,以附近的M5.0 V恒星CD Cet(GJ 1057),我们宣布围绕它的一个超级地球($4.0\pm0.4\,M_\oplus$)的同伴在2.29 d的轨道上的例子来证明小的系外行星。

英文摘要:

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.

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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