【摘要】：在斯隆數(shù)字巡天(SDSS)的第十二次數(shù)據(jù)釋放(DR12)中,我們找到一些新的白矮星。而且利用神經(jīng)網(wǎng)絡(luò)的方法來(lái)發(fā)展了一套新的顏色選擇判據(jù)來(lái)尋找SDSS中的白矮星。我們找到的新白矮星包括1899顆DA白矮星,40顆DB白矮星,22顆DQ白矮星,190顆DZ白矮星,10顆磁白矮星和133顆白矮-主序雙星。分析了氫大氣白矮星(DA)與氦大氣白矮星(DB)的SDSS觀測(cè)光譜,得到了它們的有效溫度和表面重力加速度。利用DA白矮星和DB白矮星的冷卻模型計(jì)算了它們的冷卻年齡和質(zhì)量。我們也對(duì)白矮-主序雙星進(jìn)行了光譜分析,得到了其恒星參數(shù)。同時(shí),我們通過(guò)自行找到了26顆高速白矮星候選體(V⊥≥100km s-1)。這對(duì)銀河系的動(dòng)力學(xué)演化將是有用的。
[Abstract]:In the twelfth data release (DR12) of the Sloan Digital Sky Survey (SDSS), we found some new white dwarfs. Furthermore, a new color selection criterion is developed to find white dwarfs in SDSS using neural network method. We found new white dwarfs, including 1899 DA white dwarfs, 40 DB white dwarfs, 22 DQ white dwarfs, 190 DZ white dwarfs, 10 magnetic white dwarfs and 133 white dwarf and principal binary stars. The SDSS spectra of hydrogen white dwarf (DA) and helium white dwarf (DB) are analyzed and their effective temperature and surface gravity acceleration are obtained. The cooling age and mass of DA white dwarf and DB white dwarf are calculated by using the cooling model. The star parameters of white dwarf-principal-order binary stars are also obtained by spectral analysis. At the same time, we have identified 26 high speed white dwarfs (V Karabakh 鈮，

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