• article-nadcTAP Call for Proposals Semester 2021B
    China Standard Time CFHT, P200: 1 August 2021 to 31 January 2022 TAP Overview for 2021B The ...
    Proposals for the P200 should use the LaTeX proposal template.Please use the latest proposal template ...
    Note that: Proposals for the P200 can be accessed through theCOO solicitation information page.
    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.
  • 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.
    Kiran Jain（波茨坦大学）, Y. Markus（帕沃尔·约瑟夫·沙法里克大学；ICAMER）, H.
    Orikhovski（斯洛伐克科学院天文研究所）, B.N. Stoyanova（罗马第二大学）, N. Takacs（康科利天文台；匈牙利罗兰大学）, E.
  • 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
    天气部分多云”、“虽然信噪比偏低，但在我们的光谱中可以看到零强度全宽（FWZI）约为50埃的Hα线和Hβ线，因此该天体可能是M31N 1984-07a =2004 ...
    G. Clark，R. M. Quimby，J. Bardwell，A. Choudhary，JT Markham-Adkison，C. Martin，P. Spalding，A.
    为了确认M31N 2022-11b与再发新星M31N 1984-07a的联系，我们将圣迭戈州立大学拉古纳山天文台（MLO）40英寸反射望远镜拍摄的M31N 2022-11b图像(拍摄于世界时2022年11 ...
    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）。
    Haberl, G. Sala, et al.
  • article-nadcLAMOST-Kepler/K2时域中分辨率光谱巡天首个成果发布
    -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., Zong, W., et al. 2019, RAA, 19. 75 Zong, W., Fu, J.
    -N., De Cat, P., et al. 2018, ApJS, 238, 30 De Cat, P., Fu, J.-N., Ren, A.
    -B., et al. 2015, ApJS, 220, 19 新闻来源：http://www.nao.cas.cn/xwzx/kydt/202011/t20201118_5754470.html ...
  • article-nadcFAST第二批科学数据2019年5月1日-7月31日观测项目表
    galaxies in transition from low to high star formation efficiency 下载 15 2019a-013-S Dai, Y.Sophia ...
    Hydrogen in Super Spiral Galaxies 下载 19 2019a-025-S Wang, Ke Investigating the HI to H2 ...
    Survey (PFUDS) 下载 21 2019a-031-S Wu, Jingwen Testing AGN Feedback in Quasars with H ...
    Wang, Jingbo Analysis of intermittent and nulling pulsars 下载 30 2019a-059-P Li ...
    Wang, Lin M13 new discovery follow-up observations 下载 37 2019a-085-P Yao, Jumei ...
  • 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], ...
    [Ca/H], [Ti/H], [Cr/H], [Fe/H], and [Ni/H] are 0.06 ∼ 0.12 dex, while that of [Cu/H] is 0.19 dex.
  • 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], ...
    [Ca/H], [Ti/H], [Cr/H], [Fe/H], and [Ni/H] are 0.06 ∼ 0.12 dex, while that of [Cu/H] is 0.19 dex.
  • 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], ...
    [Ca/H], [Ti/H], [Cr/H], [Fe/H], and [Ni/H] are 0.06 ∼ 0.12 dex, while that of [Cu/H] is 0.19 dex.
  • 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], ...
    [Ca/H], [Ti/H], [Cr/H], [Fe/H], and [Ni/H] are 0.06 ∼ 0.12 dex, while that of [Cu/H] is 0.19 dex.
  • 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
    ~P., Bennert N., Urry C.
    -L., Yang H., 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 ...
  • 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。
    光谱显示出巴尔末发射线(Hα,Hβ,Hγ)，还有Fe II(42多重线)和Na I(D)和Si II(6347/6371Å)。
    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。
  • 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-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-nadcFAST第三批科学数据2019年8月1日-10月31日观测项目表
    H I Profiles as a Tool to Probe the Evolutionary Stages of Galaxy Mergers 下载 22 2019a- ...
    018-S Tsai, Chaowei H I Content of Mid-IR Bright, Low-Metallicity Blue Compact Dwarf Galaxies ...
    FAST-ASKAP synergetic HI observations 下载 31 2019a-037-S Tsai, Chaowei Tracking the H ...
    Dai, Shi Resolving the emission region of PSR B1957+20 using plasma lensing 下载 40 ...
    -084-P Wang, Lin M13 new discovery follow-up observations 下载 42 2019a-095-P Hou ...
  • article-psp2月21日~3月1日PSP系统发现四颗超新星候选体
    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 ...
    <span style="color: rgb(255, 0, 0);">3、内部编号：PSP16G</span></p> <div> 2016年2月29日通过PSP公众超新星巡天项目发现， ...
    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 ...
  • article-pspPSP项目首次河外新星发现以及2016年第二颗超新星
    <p> All images can be seen from: http://www.xjltp.com/XOSS/PSP16B/PSP16B.htm<br /> C42 Xingming Observatory ...
    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 ...
  • 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 (DSGC II) 19 PT2020_0039 yuyezhao The abnormal-emission shift event of PSR B1859 ...
    Commensal Program with FAST 68 PT2020_0170 Yang Chen FAST observation of SNR G57.2 ...
  • article-nadc穿越时空的发现 ——公众超新星搜寻项目2021年首个发现
    它现在被编号为M31N 2012-01b，然而更有趣的是，天文学家发现它与M31N 1923-12c来自相同的前身天体，也就是说，这是一个少见的再发新星！
    图1：M31N 1923-12c（左）与M31N 2012-01b（右）（图像来源A. W. Shafter等人） 不知不觉我们来到了2021年7月3日。
    经查验，发现该候选体位置非常接近M31N 1923-12c和M31N 2012-01b，疑为M31N 1923-12c有记录的第三次爆发。
    1923-12c（亦被称为M31N 2012-01b，见ATel #3914，https://www.astronomerstelegram.org/? ...
    这与2012年爆发的He/N型分类一致（ATel #3914）。Hα线和Hβ线的谱线轮廓高度不对称，可能表明它们仍然处于光学厚（optically thick）。
  • metadataA catalog of early-type Hα emission-line stars and 62 newly confirmed Herbig Ae/Bes from LAMOST DR7
    Some spectra contaminated by nebula emission lines such as from H II regions are flagged in the catalog ...
    stars with stellar winds or accretion flows by calculating the terminal and peak velocities based on P-Cygni ...
    or inverse P-Cygni profiles.
    More important, with two color–color diagrams, (H-Ks, J-H) and (Ks-W1, H-Ks), of a collection of known ...
    the forbidden emission lines of [Fe II] and [O I], in which J051425.20+411310.7 is a newly discovered B[ ...
  • metadataA catalog of early-type Hα emission-line stars and 62 newly confirmed Herbig Ae/Bes from LAMOST DR7
    Some spectra contaminated by nebula emission lines such as from H II regions are flagged in the catalog ...
    stars with stellar winds or accretion flows by calculating the terminal and peak velocities based on P-Cygni ...
    or inverse P-Cygni profiles.
    More important, with two color–color diagrams, (H-Ks, J-H) and (Ks-W1, H-Ks), of a collection of known ...
    the forbidden emission lines of [Fe II] and [O I], in which J051425.20+411310.7 is a newly discovered B[ ...
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