论文标题
从多个调查光谱中估算2型AGN窄线区域的尺寸 - 演示
Estimating sizes of Type 2 AGN narrow-line regions from multiple survey spectra -- a demonstration
论文作者
论文摘要
在信函中，提出了一种有趣的方法，以通过比较通过比较sdss fiber（MJD = 5183），以0.101的红移估算2型AGN SDSS SDSS j083823.91+490241+490241.1（= SDSS J0838）的尺寸。 EBOSS纤维（MJD = 55277）（直径为2个弧形）。减去PPXF方法确定的主体星系贡献后，可以通过高斯函数很好地测量SDSS J0838的狭窄发射管线，高斯函数可以很好地测量，导致90 \％的[O〜 {\ scii iii}]的90 \％覆盖了eBoss覆盖的eBoss fiber diamoss fi dimosd diamose fi dimosecnd dimosecd timececd timoseccond timececd。同时，ZTF 3年3年的G/R波段光曲线的非广泛发射组件和无变量都可以应用于确认SDSS J0838为2型AGN，表明对SDSS J0838中投影的NLRS大小的方向影响很小。因此，在SDSS J0838中，可以合理地接受NLRS大小的1ArcSecond（2250pc）的上限。结合固有的红色校正[O〜 {\ sc iii}]线的光度，SDSS J0838井中NLRS大小的上限位于NLR的R-L经验关系的99.9999 \％置信度范围内。
In the Letter, an interesting method is proposed to estimate size of narrow emission lines regions (NLRs) of a Type-2 AGN SDSS J083823.91+490241.1 (=SDSS J0838) at a redshift of 0.101, by comparing spectroscopic properties through the SDSS fiber (MJD=51873) (diameter of 3 arcseconds) and through the eBOSS fiber (MJD=55277) (diameter of 2 arcseconds). After subtractions of pPXF method determined host galaxy contributions, the narrow emission lines of SDSS J0838 in the SDSS spectrum and in the eBOSS spectrum can be well measured by Gaussian functions, leading more than 90\% of [O~{\sc iii}] emissions to be covered by the eBOSS fiber with diameter of 2 arcseconds. Meanwhile, both none broad emission components and none-variabilities of ZTF 3years-long g/r-band light curves can be applied to confirm SDSS J0838 as a Type-2 AGN, indicating few orientation effects on the projected NLRs size in SDSS J0838. Therefore, upper limit about 1arcsecond (2250pc) of the NLRs size can be reasonably accepted in SDSS J0838. Combining with the intrinsic reddening corrected [O~{\sc iii}] line luminosity, the upper limit of NLRs size in SDSS J0838 well lies within the 99.9999\% confidence bands of the R-L empirical relation for NLRs in AGN.
