• article-nadcTAP Call for Proposals Semester 2021B
    and included in the uploaded proposal:https://sites.astro.caltech.edu/observatories/coo/solicit/2021B/C200 ...
    for writing proposals Four TAP workshops have been held at PKU/KIAA (1st), NAOC (2nd,3rd), XMU (4th ...
    ) 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.
  • 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
    在WeCAPP团队检测到M31N 2004-11f光学爆发26天后，Pietsch等人在相同位置探测到一个超软X射线源（能量很低的X射线称为超软X射线。
    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.
    The Astronomical Journal, 1989, 97. 6.C. H. Lee, A. Riffeser, S. Seitz, R. Bender, et al.
    Haberl, G. Sala, et al.
  • article-nadc11月底至12月初PSP发现4颗河外新星
    2013-10c非常接近，怀疑它可能是M31N 2013-10c的又一次爆发，因此M31N 2013-10c可能是一颗再发新星。
    M31N 2013-10c在2013年的爆发没有公开的光谱观测记录，但捷克天文学家Kamil Hornoch等人在Hα波段对其进行了测光观测，结果表明M31N 2013-10c很可能是新星。
    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.
    X射线对应体。
  • 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 ...
    Observers A.Li,X.Guo,C.Ji,P.Sun,X.Gao,Measurer P.Sun 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD ...
  • metadataLAMOST DR8 MRS CSN Stellar Parameters and Chemical Abundances Catalog
    Parameters and Chemical Abundances Catalog provides a catalog of stellar parameters and chemical elements (C, ...
    incorporates the physical model and data-driven approaches to improve the shortcomings of the low S/N ...
    coordinate information (right ascension (RA), declination (Dec)), signal-to-noise of the spectra (S/N ...
    of blue and red arm), effective temperature (Teff), surface gravity (log g), metallicity [Fe/H], macroturbulence ...
    , microturbulence, elemental abundance ([X/Fe]), their errors and quality flags, and the total quality ...
  • metadataLAMOST DR8 MRS CSN Stellar Parameters and Chemical Abundances Catalog
    Parameters and Chemical Abundances Catalog provides a catalog of stellar parameters and chemical elements (C, ...
    incorporates the physical model and data-driven approaches to improve the shortcomings of the low S/N ...
    coordinate information (right ascension (RA), declination (Dec)), signal-to-noise of the spectra (S/N ...
    of blue and red arm), effective temperature (Teff), surface gravity (log g), metallicity [Fe/H], macroturbulence ...
    , microturbulence, elemental abundance ([X/Fe]), their errors and quality flags, and the total quality ...
  • metadataLAMOST DR8 MRS CSN Stellar Parameters and Chemical Abundances Catalog
    Parameters and Chemical Abundances Catalog provides a catalog of stellar parameters and chemical elements (C, ...
    incorporates the physical model and data-driven approaches to improve the shortcomings of the low S/N ...
    coordinate information (right ascension (RA), declination (Dec)), signal-to-noise of the spectra (S/N ...
    of blue and red arm), effective temperature (Teff), surface gravity (log g), metallicity [Fe/H], macroturbulence ...
    , microturbulence, elemental abundance ([X/Fe]), their errors and quality flags, and the total quality ...
  • metadataLAMOST DR8 MRS CSN Stellar Parameters and Chemical Abundances Catalog
    Parameters and Chemical Abundances Catalog provides a catalog of stellar parameters and chemical elements (C, ...
    incorporates the physical model and data-driven approaches to improve the shortcomings of the low S/N ...
    coordinate information (right ascension (RA), declination (Dec)), signal-to-noise of the spectra (S/N ...
    of blue and red arm), effective temperature (Teff), surface gravity (log g), metallicity [Fe/H], macroturbulence ...
    , microturbulence, elemental abundance ([X/Fe]), their errors and quality flags, and the total quality ...
  • 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
    研究人员发现，在近1550例豌豆星系光谱中，仅有5例具有明显双峰窄线的绿豌豆星系，根据X射线、中红外、射电等多波段测光和光谱数据，利用能谱拟合和光学谱线诊断的方法高度可信地认证了该样本中的AGN活动。
    参考文献： [1] Cardamone C., Schawinski K., Sarzi M., Bamford S.~P., Bennert N., Urry C.
    ., Lintott C., et al., 2009, MNRAS, 399, 1191. doi:10.1111/j.1365-2966.2009.15383.x [2] Liu S., Luo ...
    -L., Yang H., Shen S.-Y., Wang J.-X., Zhang H.
  • 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
    M31N 2022-03d 今年3月26日上午11时许，PSP管理员赵经远在翻阅3月5日HMT为PSP拍摄的M31图像时，意外发现M31 A9.fts6图像上存在一颗可疑目标，它与C14在2年前发现的 ...
    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 ...
    2022-03d的TNS页面 M31N 2019-09d的遗憾 时间回溯到2019年9月23日，当天0点的钟声刚刚敲响，PSP参与者涂天宇和徐建林便先后在C14拍摄的M31 A6.fts4图像中发现了一颗可疑目标 ...
    图4 M31N 2019-09d发现图像 编号：M31N 2019-09d（=PNV J00441073+4154220=PSP19C） 发现时间：2019年9月22日23时28分11秒 ...
    星明天文台官网，http://xjltp.china-vo.org/psp22p.html Allen W.
  • article-nadcLAMOST-Kepler/K2时域中分辨率光谱巡天首个成果发布
    这20个天区分布在K1及K2的C4、C5、C8、C13、C14和C16天区，输入目标源总计约为55000颗。
    -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.
  • article-nadc穿越时空的发现 ——公众超新星搜寻项目2021年首个发现
    这颗新星现在被编号为M31N 1923-12c，意为1923年12月在M31中发现的第3颗新星。
    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。
    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）。
    该光谱证认AT 2021rno是一次新星爆发，并暗示M31N 1923-12c的再发周期短至9年。
  • 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。
    C. Williams (图尔库大学), M. J. Darnley (利物浦约翰摩尔斯大学), M. W. Healy (利物浦约翰摩尔斯大学), F. J.
    Murphy-Glaysher (利物浦约翰摩尔斯大学), C. L.
    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.
    Rom（UniST；UGA）, P. Hernandez Cascales（UCM；CAB）, D. Barbosa（里斯本大学；里斯本大学科学院）, C. Cabello（UCM）, J.
    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.
  • 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 ...
    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 ...
    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 ...
    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 ...
    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-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 ...
    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 ...
    Observers Z.Zhang, C.Ji, J.Ruan, X.Gao, Measurer H.Tan 0.36-m f/6.9 Schmidt-Cassegrain telescope and ...
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