• 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-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.
  • 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 ...
  • 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-nadc春节前后国家天文科学数据中心公众超新星搜寻项目发现2颗超新星和1颗河外新星
    Dyer, N. Koivisto, B. Davies, B. Godson, M. Pursiainen, P. Charalampopoulos, M. Magee, K.
    Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. P. Breton, L. K. Nuttall, E.
    Bora（康科利天文台；匈牙利罗兰大学）, T. Rom（UniST；UGA）, P. Hernandez Cascales（UCM；CAB）, D.
    Almeida（CENTRA）, S. Bisero（GEPI；巴黎天文台）, G.I.E. Boudiba（阿尔及利亚天文学、天体物理学与地球物理学研究中心）, A.
    Ikhsanova（帕多瓦大学）, N. Kiran Jain（波茨坦大学）, Y. Markus（帕沃尔·约瑟夫·沙法里克大学；ICAMER）, H.
  • 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 ...
  • 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-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 ...
  • 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-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-nadc11月底至12月初PSP发现4颗河外新星
    中等帕洛玛暂现源工厂（iPTF）的后随观测表明，M31N 2013-10c在R波段的峰值亮度是17.3星等，t2时间（即从峰值亮度变暗2等所用的时间）为10.4±0.4天。
    M31N 2013-10c相对快速的演变速度（t2 = 10.4天；Soraisam et al. 2017, A&A, 599, A48），以及从AT 2023yoa观测到的宽阔的H&alpha ...
    Barway、G.
    Anupama、Shatakshi Chamoli、S.
    read=5503 ATel#16354：M31N 2013-10c (= AT 2023yoa) is a Recurrent Nova in M31，The Astronomer's Telegram ...
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