论文标题
Lamost J202629.80+423652.0不是共生之星
LAMOST J202629.80+423652.0 is not a symbiotic star
论文作者
论文摘要
Lamost J202629.80+423652.0最近被归类为一个新的共生恒星，其中包含长期的Mira，周围环绕着灰尘（D型），并显示在光谱高电离发射线中，包括6825 Ang的Raman scatered Ovi。我们已经在3500-8000 ANG范围内观察到Lamost J202629.80+423652.0在BVRI频段和光谱上以光度为准。我们发现它是普通的G8IV次巨星，它剥夺了其光谱中的任何发射线，并被E（B-V）= 0.35 mag变红。将我们的光度法与来自全家巡逻调查的数据相结合，我们发现Lamost J202629.80+423652.0是非可变的，因此不是脉动为Mira。我们已经从现有资源中编译了其光谱能量分布，并延伸到了中红外，发现它完全由G8IV光电恒星发射占据，而没有任何偶尔灰尘的迹象。因此，我们得出的结论是，Lamost J202629.80+423652.0不是共生之星，也不是脉动或被尘埃笼罩。
LAMOST J202629.80+423652.0 has been recently classified as a new symbiotic star containing a long-period Mira, surrounded by dust (D-type) and displaying in the optical spectra high ionization emission lines, including the Raman-scattered OVI at 6825 Ang. We have observed LAMOST J202629.80+423652.0 photometrically in the BVRI bands and spectroscopically over the 3500-8000 Ang range. We have found it to be a normal G8IV sub-giant star, deprived of any emission line in its spectrum, and reddened by E(B-V)=0.35 mag. Combining our photometry with data from all-sky patrol surveys, we find LAMOST J202629.80+423652.0 to be non variable, so not pulsating as a Mira. We have compiled from existing sources its spectral energy distribution, extending well into the mid-Infrared, and found it completely dominated by the G8IV photospheric stellar emission, without any sign of circumstellar dust. We therefore conclude that LAMOST J202629.80+423652.0 is not a symbiotic star, nor it is pulsating or been enshrouded in dust.
