I类晚型星的鉴别
Identification of late-type stars of class I
摘要：
目标。盖亚DR 3 GSP-Phot和GSP-Spec参数的已知K-和M-型恒星的光度I类检查和比较从文献中收集的参数，以评估其准确性和未知的本质上明亮的晚型恒星分类的潜力。Gaia DR 3 GSP-Phot和GSP-Spec参数由天体物理参数推断软件（Apsis）生成。方法.在盖亚DR 3星表中，大约有40，000个条目的Apsis参数与已知的红超巨星、RSG、良好的超新星以及红外2 MASS和WISE数据相似。利用视差距离、红外光度学和光变信息，仅发现203个新条目，其光度和温度与已知的RSG相似，G波段振幅小于0.5 mag.它们的低分辨率BP/RP光谱与经验制作的已知明亮晚型星的BP/RP光谱库进行了比较（富C，S型，富O渐近巨星分支星（AGB），和RSG），以获得它们的光谱类型。结果其中，15颗S型星的BP/RP光谱中可见ZrO和LaO的特殊吸收特征，1颗S/C星和9颗富C星的强CN吸收带。K型和M型可以以两种亚型的准确度复制。确认了20个新的RSG，其中6个的辐射热星等比AGB极限更亮：2MASS J21015501+4517205，2MASS J16291280-4956384，2MASS J10192621-5818105，2MASS J20230860+3651450，2MASS J17084131-4026595，和2 MASS J16490055-4217328。盖亚DR 3 LPV管道的富C星标志对于某些RSG错误地为真，并且必须对BP/RP光谱进行目视检查。
英文摘要：
Aims. Gaia DR3 GSP-Phot and GSP-Spec parameters of known K- and M-type stars with luminosity class I are examined and compared with parameters collected from the literature, to assess their accuracy and their potential for stellar classification of unknown intrinsically bright late-types. Gaia DR3 GSP-Phot and GSP-Spec parameters were generated by the Astrophysical Parameters Inference Software (Apsis). Methods. In the Gaia DR3 catalog, there are about 40,000 entries with Apsis parameters similar to those of known red supergiants, RSGs, good parallaxes, and infrared 2MASS and WISE data. By using parallactic distances, infrared photometry, and variability information, only 203 new entries are found with luminosities and temperatures similar to that of known RSGs and G-band amplitudes smaller than 0.5 mag. Their low-resolution BP/RP spectra are compared with an empirically made spectral library of BP/RP spectra of known bright late-type stars (C-rich, S-type, O-rich asymptotic giant branch stars (AGBs), and RSGs) to obtain their spectral types. Results. Among them, 15 S-type stars are identified by peculiar absorption features due to ZrO and LaO visible in their BP/RP spectra, one S/C star, and nine C-rich stars by their strong CN absorption bands. K- and M-types can be reproduced with an accuracy of two subtypes. 20 new RSGs are confirmed, of which six have bolometric magnitudes brighter than those of the AGB limit: 2MASS J21015501+4517205, 2MASS J16291280-4956384, 2MASS J10192621-5818105, 2MASS J20230860+3651450, 2MASS J17084131-4026595, and 2MASS J16490055-4217328. The flag for C-rich stars of the Gaia DR3 LPV pipeline is erroneously true for some RSGs and a visual inspection of the BP/RP spectra is mandatory.
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。
