• article-nadcTAP Call for Proposals Semester 2021B
    and included in the uploaded proposal:https://sites.astro.caltech.edu/observatories/coo/solicit/2021B/C200 ...
    the time equivalent to the total funding will be allocated among member institutes: CAMS, XMU, PKU, THU ...
    ) 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。
    部分新星在爆发后的某一时段，其辐射主要集中于超软X射线能段，因此是一种超软X射线源），82天后该源消失不见。
    此外，Pietsch等人也意识到，M31N 2004-11f可能是M31N 1984-07a的再次爆发。 图6 钱德拉X射线望远镜观测到的M31N 2004-11f和其他16颗新星。
    G. Clark，R. M. Quimby，J. Bardwell，A. Choudhary，JT Markham-Adkison，C. Martin，P. Spalding，A.
    Haberl, G. Sala, et al.
  • article-nadc厦门大学李昂教授团队和合作者在脉冲星周期跃变的多波段研究方面取得进展（II）
    相关研究工作列表： P. Liu, J.-P. Yuan, M.-Y. Ge, W.-T. Ye, S.-Q. Zhou, S.-J. Dang, Z.-R. Zhou, E.
    Gügercinoğlu, Z.-H Tu, P. Wang, A. Li, D. Li, and N.
    -P. Yuan, M.-Y. Ge, W.-T. Ye, S.-Q. Zhou, S.-J. Dang, Z.-R. Zhou, E. Gügercinoğlu, W.-H.
    Wang, P. Wang, A. Li, D. Li, and N.
    X.
  • 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-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。
    确实是M31N 2013-10c的又一次爆发。
    Barway、G.
    2013年和2015年，天文学家分别从历史数据中找到了2009年和2010年的爆发；2014年，天文学家又从伦琴X射线天文台和钱德拉X射线天文台的历史数据中，找到了1992年、1993年和2001年爆发的 ...
    X射线对应体。
  • 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 ...
    -Y., Wang J.-X., Zhang H.
  • 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。
    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。
    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 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。
  • 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.
    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.
  • metadataStellar atmospheric parameters and 22 elemental abundances from LAMOST spectra with DD-Payne
    catalog content includes basic atmospheric parameters (Teff, logg, [Fe/H], Vmic) and abundance ratio ([X/ ...
    Fe]) of 13 elements, namely C, N, O, Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Ni, Ba, for all these stars.
    Additionally, the abundance ratios of Sr, Y, Zr, La, Ce, Nd, Sm, and Eu are provided for about 3.6 million ...
    For O, Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Ni, Sr, Y, Zr, Ba, La, Ce, Nd, Sm, and Eu, the abundances in the ...
  • metadataStellar atmospheric parameters and 22 elemental abundances from LAMOST spectra by DD-Payne
    catalog content includes basic atmospheric parameters (Teff, logg, [Fe/H], Vmic) and abundance ratio ([X/ ...
    Fe]) of 13 elements, namely C, N, O, Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Ni, Ba, for all these stars.
    Additionally, the abundance ratios of Sr, Y, Zr, La, Ce, Nd, Sm, and Eu are provided for about 3.6 million ...
    For O, Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Ni, Sr, Y, Zr, Ba, La, Ce, Nd, Sm, and Eu, the abundances in the ...
  • metadataStellar atmospheric parameters and 22 elemental abundances from LAMOST spectra by DD-Payne
    catalog content includes basic atmospheric parameters (Teff, logg, [Fe/H], Vmic) and abundance ratio ([X/ ...
    Fe]) of 13 elements, namely C, N, O, Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Ni, Ba, for all these stars.
    Additionally, the abundance ratios of Sr, Y, Zr, La, Ce, Nd, Sm, and Eu are provided for about 3.6 million ...
    For O, Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Ni, Sr, Y, Zr, Ba, La, Ce, Nd, Sm, and Eu, the abundances in the ...
  • 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.
    million non-time domain medium resolution spectral data, among them 670 thousands of spectra with S/N> ...
    10; and 2.87 million time domain medium resolution spectra, among them 1.60 million spectra with S/N> ...
  • 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.
    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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