论文标题
Mesas项目：ALMA观察F型星$γ$ LEP，$γ$ vir a和$γ$ vir b
The MESAS Project: ALMA observations of the F-type stars $γ$ Lep, $γ$ Vir A, and $γ$ Vir B
论文作者
论文摘要
由于缺乏大多数光谱类型的数据，因此亚毫升计至厘米波长范围的恒星光谱仍然很差。在测试恒星大气模型中，需要对恒星发射的准确表征，对于揭示与未解决的偶然性碎片相关的发射也是必不可少的。我们介绍了附近三个，主要序列的Alma观察，碎片罚款，F型星$γ$ LEP，$γ$ vir a和$γ$ vir b和$γ$ vir b的0.87和1.29毫米。我们使用这些数据来限制半经验大气模型。我们讨论这些恒星的大气结构，探索潜在的短期变异性以及对碎屑盘研究的潜在影响。这些结果是正在进行的运动的一部分，该运动旨在获得碎屑势力恒星的长波长观测，标题为“测量亚毫米/毫米波长（MESA）”的恒星大气的发射。
The spectrum of stars in the submillimeter to centimeter wavelength range remains poorly constrained due to a lack of data for most spectral types. An accurate characterization of stellar emission in this regime is needed to test stellar atmosphere models, and is also essential for revealing emission associated with unresolved circumstellar debris. We present ALMA observations of the three nearby, main-sequence, debris-poor, F-type stars $γ$ Lep, $γ$ Vir A, and $γ$ Vir B at 0.87 and 1.29 millimeters. We use these data to constrain semi-empirical atmospheric models. We discuss the atmospheric structure of these stars, explore potential short term variability, and the potential impact on debris disk studies. These results are part of an ongoing campaign to obtain long wavelength observations of debris-poor stars, entitled Measuring the Emission of Stellar Atmospheres at Submillimeter/millimeter wavelengths (MESAS).
