• article-nadcTAP Call for Proposals Semester 2021B
    the time equivalent to the total funding will be allocated among member institutes: CAMS, XMU, PKU, THU ...
    · P200-CWI is a PI instrument and you will need to attach the PI’s approval along with your ...
    ) and SYSU(5th).
    It isnotsufficient to simply say, "We require 2300s exposure time to reach S/N=10 for g=24 mag" ...
    ; if g=24 and S/N=10 are not also justified.
  • metadataLAMOST DR5 v1 A, F, G and K type stars catalog
    The LAMOST DR5 V1 A, F, G and K type star catalog lists 5,348,664 spectra information obtained by LAMOST ...
    during October 24th 2011 and June 16th 2017, including 85,845 A type stars, 1,694,167 F type stars, ...
    2,739,446 G type stars and 829,206 K type stars.
    These targets are selected with the criterions of S/N in g band greater than 6 in dark nights, and S/ ...
    N in g band greater than 15 in bright nights.
  • article-nadc南山26米望远镜氨分子观测研究进展
    氨分子(NH3)是宇宙中探测到的第一种多原子星际分子，其谱线包含了很多频率接近的精细跃迁，便于计算分子云的温度、密度等物理参数。
    较之于一氧化碳分子（CO），氨分子示踪的气体密度高一个量级（n~10⁴ cm⁻³)，在低温时不易冻结耗散，特别适于观测研究分子云中的冷致密气体成分。
    新疆天文台恒星形成与演化团组科研人员使用南山26米射电望远镜对天鹰座巨分子云的小质量恒星形成区（Serpens South）和大质量恒星形成区（W40）进行NH₃(1,1)和(2,2)谱线成图观测研究， ...
    图1.利用南山26米射电望远镜对天鹰座恒星区域的NH₃观测，左图：NH₃(1,1)线 积分强度图；右图：NH₃(2,2)线积分强度图。
    新闻来源：http://www.xao.ac.cn/xwzx/kydt/202012/t20201204_5808412.html ...
  • article-nadcLAMOST-Kepler/K2时域中分辨率光谱巡天首个成果发布
    2018年5月-2019年6月，共计13个天区被观测过一次以上，观测目标源超过28000颗，获得了约37万条高信噪比（S/N>10）光谱，其中单颗目标源最高观测达48次。
    结果表明，当光谱S/N=20时，恒星有效温度、表面重力加速度、金属丰度和视向速度的内部误差分别为80 K、0.08 dex、0.05 dex和1km/s。
    -N., De Cat, P., et al. 2020, ApJS, 251, 16 Fu, J.
    -N., De Cat, P., Zong, W., et al. 2020, RAA, 20, 167 Liu, N., Fu, J.
    -N., De Cat, P., et al. 2018, ApJS, 238, 30 De Cat, P., Fu, J.-N., Ren, A.
  • metadata LAMOST Data Release 7 V1.2
    The LAMOST seventh Data Release V1.2 contains low resolution spectra obtained from October 24th 2011 ...
    to June 18th 2019, and medium resolution spectra obtained from September 2017 to June 2019.
    There are total 10,599,979 low resolution spectra, among them 8,819,957 with S/N> 10.
    N>10; and 2.87 million time domain medium resolution spectra, among them 1.60 million spectra with S/ ...
    N>10.
  • article-nadc国家天文科学数据中心公众超新星搜寻项目发现M31N 1984-07a有记录的第4次爆发
    他们在ATel#15779中确认AT 2022zyr是M31N 1984-07a有记录的第4次爆发，并初步得到它的t2时间为10.0±0.3天。
    G. Clark，R. M. Quimby，J. Bardwell，A. Choudhary，JT Markham-Adkison，C. Martin，P. Spalding，A.
    自从发现M31N 1984-07a的这次最新爆发以来，我们一直在跟踪M31N 2022-11b的亮度演变，以表征其光变曲线；特别是，要确定它达到最大亮度后变暗的速度（即它的t2时间）。
    Riffeser, S. Seitz, R. Bender, et al.
    Haberl, G. Sala, et al.
  • article-psp2月21日~3月1日PSP系统发现四颗超新星候选体
    ) around Mar.01.57425 UT.
    Observers J.Lou,D.Hu,Q.Qiao,W.Gao,X.Liao,S.Liu,S.Li,Y.Shen,A.Li,L.Liao,H.Xue,K.Yua</div> <div> n,X.Zhang ...
    ,C.Ji,Y.Yu,Q.Hui,L.Li,X.Wang,B.Tian,Q.Yin,G.Sun,X.Gao, Measurers G.Sun 0.36-m f/6.9 Schmidt-Cassegrain ...
    Observers W.Gao,Y.Shen,Z.Zhang,D.Hu,H.Xue,M.Zhang,Q.Yin,Y.Yu,J.Xu,L.Liao,Y.Lou,L.Li,W.Song,S.Gu,C.Ji, ...
    X.Wang,T.Tu,A.Wang,S.Yin,G.Sun,X.Gao, Measurers G.Sun 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD ...
  • metadataBulletinA
    IERS Bulletin A contains Earth orientation parameters x/y pole, UT1-UTC and their errors at daily intervals ...
  • article-nadc研究人员基于LAMOST数据在强发射线星系光谱研究中取得新进展
    ., Bamford S.~P., Bennert N., Urry C.
    ., 2009, MNRAS, 399, 1191. doi:10.1111/j.1365-2966.2009.15383.x [2] Liu S., Luo A.
    ., Shen S.-Y., Wang J.-X., Zhang H.
    -T., Zheng Z., et al., 2022, ApJ, 927, 57. doi:10.3847/1538-4357/ac4bd9 新闻来源：https://mp.weixin.qq.com ...
    /s/-_rm_9PG-YTNIEmR09NVWg ...
  • metadataSPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey
    The fundamental stellar atmospheric parameters (T<SUB>eff</SUB> and log g) and 13 chemical abundances ...
    The stellar labels derived by SPCANet have precisions of 119 K for T<SUB>eff</SUB> and 0.17 dex for log ...
    g.
    The abundance precision of 11 elements including [C/H], [N/H], [O/H], [Mg/H], [Al/H], [Si/H], [S/H], ...
  • metadataError Correction Factors of Observational Parameters(DR7_v2.0)
    columns 4–5 are the spectroscopy types classified by the LAMOST 1D pipeline and the LAMOST spectral S/ ...
    N of g-band, columns 6–10 are the correction factors (k) of each parameter.
  • article-pspPSP项目首次河外新星发现以及2016年第二颗超新星
    Observers Q.Yin, H.Xue, C.Ji, J.Liao, M.Zhang, A.Wang, Y.Lv, G.Sun, X.Gao , Measurer G.Sun. 0.36-m f/ ...
    Spectroscopic classification of M31N 2016-02a (PNV J00444349+4153401) as a classical nova in M31</p> ...
    candidate M31N 2016-02a (PNV J00444349+4153401; see CBAT TOCP) with the SPRAT spectrograph on the 2m ...
    asymmetric, showing higher velocities on the red-side of their profiles.This spectrum confirms that M31N ...
    ) on one 300-s image (limiting mag about 18.0) around Feb.08.83472 UT.
  • metadataSPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey
    The fundamental stellar atmospheric parameters (T<SUB>eff</SUB> and log g) and 13 chemical abundances ...
    The stellar labels derived by SPCANet have precisions of 119 K for T<SUB>eff</SUB> and 0.17 dex for log ...
    g.
    The abundance precision of 11 elements including [C/H], [N/H], [O/H], [Mg/H], [Al/H], [Si/H], [S/H], ...
  • metadataSPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey
    The fundamental stellar atmospheric parameters (T<SUB>eff</SUB> and log g) and 13 chemical abundances ...
    The stellar labels derived by SPCANet have precisions of 119 K for T<SUB>eff</SUB> and 0.17 dex for log ...
    g.
    The abundance precision of 11 elements including [C/H], [N/H], [O/H], [Mg/H], [Al/H], [Si/H], [S/H], ...
  • metadataSPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey
    The fundamental stellar atmospheric parameters (T<SUB>eff</SUB> and log g) and 13 chemical abundances ...
    The stellar labels derived by SPCANet have precisions of 119 K for T<SUB>eff</SUB> and 0.17 dex for log ...
    g.
    The abundance precision of 11 elements including [C/H], [N/H], [O/H], [Mg/H], [Al/H], [Si/H], [S/H], ...
  • metadataError Correction Factors of Observational Parameters
    columns 4-5 are the spectroscopy types classified by the LAMOST 1D pipeline and the LAMOST spectral S/ ...
    N of g-band, columns 6-10 are the correction factors (k) of each parameter.
  • metadataError Correction Factors of Observational Parameters
    columns 4-5 are the spectroscopy types classified by the LAMOST 1D pipeline and the LAMOST spectral S/ ...
    N of g-band, columns 6-10 are the correction factors (k) of each parameter.
  • article-nadcFAST第八批科学数据开放
    var csrf_token = "ImRhMjdjNGE4NjljZjVkYzg0MWVhNDgwYmUyYTVlMWQ1YmM4OGJmM2Mi.YgtNEQ.sxAbWRuUCDgIQknxH-Ix2X3OWnQ ...
    2020年11月01日-2021年01月31日观测项目 序号 项目编号 项目负责人 项目名称 项目简介 1 N2020_3 Zhu ...
    _0002 wangjingbo 1000 pulses in 1000 pulsars:observations of single pulses chosen through the P-Ṗ ...
    FAST 54 PT2020_0126 Marko Krco Deciphering the Mystery of the Smith Cloud’s ...
    Commensal Program with FAST 68 PT2020_0170 Yang Chen FAST observation of SNR G57.2 ...
  • article-nadc时隔三年，终获证认 ——PSP发现M31N 2017-01e最近两次爆发并合作发表ATel
    本文将介绍M31N 2017-01e两次再爆发——M31N 2022-03d和M31N 2019-09d的发现和证认过程。
    赵经远在进一步查验后确认了该目标的真实性，并将其上报至天文电报中央局（CBAT）和暂现源名称服务网（TNS），该目标获得候选体编号PNV J00441072+4154224、AT 2022fcy，内部编号PSP22P， ...
    图1 M31N 2022-03d发现图像 编号：M31N 2022-03d（=PNV J00441072+4154224=AT 2022fcy=PSP22P） 发现时间：2022年3月5日22 ...
    J00441072+4154224.html AT 2022fcy，Transient Name Server，https://www.wis-tns.org/object/2022fcy PSP22P， ...
    星明天文台官网，http://xjltp.china-vo.org/psp22p.html Allen W.
  • article-nadc公众超新星搜寻项目2020年第二颗发现
    该目标发现时星等约15.8G，内部编号PSP20A，候选体编号PNV J00422347+4108228、AT 2020lye。
    TNS） 图3：PNV J00422347+4108228（CBAT） ATel#13795全文翻译（翻译：张宓） M31中AT 2020lye为新星的光谱分类 ATel #13795; S.
    S/N相对较差，但Na I D和Si II谱线显示出清晰的天鹅座P型星谱线轮廓。我们测量Hα线的半高全宽为2100km/s左右。
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