5、大赛组委会对恶意刷票保留处理权力。
即日起登陆中国数字科技馆大赛官方投票页面即可投票。
https://www.cdstm.cn/subjects/observatory ...
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在高信噪比（SNRg > 100）时，SLAM计算出的恒星有效温度、表面重力、整体金属丰度、alpha元素丰度、碳元素丰度和氮元素丰度的精度分别达到49 K、0.10 dex、0.037 dex、 ...0.026 dex、0.058 dex 和 0.106 dex。
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其参数覆盖范围较广，有效温度从 3750K 到 8500 K，金属丰度从 -2.5 dex 到 1.0 dex， 表面重力加速度从 0 dex到 5.0 dex （见图1）。通过与其他星表的外部对比发现，该光谱库在该分辨率下（R~1800）的参数测量精度约为：温度 125 K，金属丰度 0.1 dex，表面重力加速度约为0.2 dex。
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对于信噪比大于 10 的LAMOST 中分辨率光谱，其有效温度和表面重力误差水平为119 K和0.17 dex，13 种化学元素[C/H]、 [N/H]、[O/H]、[Mg/H]、[Al/H]、[Si/ ...H]、[S/H]、[Ca/H]、[Ti/H]、[Cr/H]、[Fe/H]和[Ni/H]的误差水平为0.06-0.12 dex，[Cu/H]的精度为0.19 dex。
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两种数据的测量误差均在0.2dex（信噪比低至5时，年龄误差在0.25dex，金属丰度误差在0.3dex）（参见图2）。 图2 LAMOST巡天和SDSS同源光谱的星族成分分析。
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LAMOST低分辨率光谱的星团参数结果和文献中基于APOGEE、Gaia高分辨率光谱的星团参数结果进行了比较分析，发现视向速度的平均差值为-5km/s，弥散5-6km/s，金属丰度的平均差值为-0.02dex ...,弥散0.1dex。半径范围内的金属丰度径向梯度及其随时间的演化（左图所示），以及银面距1kpc以内的金属丰度垂向梯度及其随时间的演化（右图所示），发现银河系的整体径向和垂向金属丰度梯度分别为-0.053±0.004dex .../kpc和-0.252±0.039 dex/kpc。
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For spectra with S/N >= 10, the precision of estimations Teff and log g are 88 K and 0.13 dex respectively ..., elements C, Mg, Al, Si, Ca, Fe, Ni are 0.05 dex to 0.08 dex, and N, O, S, K, Ti, Cr, Mn are 0.09 dex ...to 0.14 dex, while that of Cu is 0.19 dex.
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uniform data set ranging from 3750 through 8500K in effective temperature (Teff), from −2.5 through +1.0 dex ...in metallicity ([Fe/H]), and from 0 to 5.0 dex in gravity (log g).We obtained precisions of 41 K, 0.11 dex, and 0.05 dex for Teff, log g, and [Fe/H], respectively, which ...stellar parameters through this library can achieve accuracies of approximately 125 K in Teff, 0.1 dex ...in [Fe/H] and 0.20 dex in log g without systematic offset.
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uniform data set ranging from 3750 through 8500K in effective temperature (Teff), from −2.5 through +1.0 dex ...in metallicity ([Fe/H]), and from 0 to 5.0 dex in gravity (log g).We obtained precisions of 41 K, 0.11 dex, and 0.05 dex for Teff, log g, and [Fe/H], respectively, which ...stellar parameters through this library can achieve accuracies of approximately 125 K in Teff, 0.1 dex ...in [Fe/H] and 0.20 dex in log g without systematic offset.
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For spectra with S/N >= 10, the precision of estimations Teff and log g are 88 K and 0.13 dex respectively ..., elements C, Mg, Al, Si, Ca, Fe, Ni are 0.05 dex to 0.08 dex, and N, O, S, K, Ti, Cr, Mn are 0.09 dex ...to 0.14 dex, while that of Cu is 0.19 dex.
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uniform data set ranging from 3750 through 8500K in effective temperature (Teff), from −2.5 through +1.0 dex ...in metallicity ([Fe/H]), and from 0 to 5.0 dex in gravity (log g).We obtained precisions of 41 K, 0.11 dex, and 0.05 dex for Teff, log g, and [Fe/H], respectively, which ...stellar parameters through this library can achieve accuracies of approximately 125 K in Teff, 0.1 dex ...in [Fe/H] and 0.20 dex in log g without systematic offset.
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uniform data set ranging from 3750 through 8500K in effective temperature (Teff), from −2.5 through +1.0 dex ...in metallicity ([Fe/H]), and from 0 to 5.0 dex in gravity (log g).We obtained precisions of 41 K, 0.11 dex, and 0.05 dex for Teff, log g, and [Fe/H], respectively, which ...stellar parameters through this library can achieve accuracies of approximately 125 K in Teff, 0.1 dex ...in [Fe/H] and 0.20 dex in log g without systematic offset.
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10月5日，他们在《天文学家电报（The Astronomer's Telegram）》上发表通信Atel #8120，确认这颗由廖家铭发现的超新星侯选体是一颗IIP型超新星。图一 廖家铭发现的超新星（拍摄处理：星明天文台） 图二 《天文学家电报》通信Atel #8120 确认廖家铭发现的超新星侯选体为IIP型超新星 公众超新星搜寻项目 由星明天文台和中国虚拟天文台合作开展的公众超新星搜寻项目 ...中国虚拟天文台正是提供了这样一个参与科学发现，了解天文学的渠道。 2015年，星明天文台与中国虚拟天文台展开合作，正式启动公众超新星搜寻项目。
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因此，热亚矮星只可能是通过某些比较特殊的渠道产生的，比如双星演化等，从而热亚矮星的形成问题也引起了天文学家的极大兴趣。 热亚矮星的质量是非常重要的物理参数，可以直接用来检验和限制热亚矮星的形成模型。富氦型热亚矮星被认为是通过双星并合渠道产生，理论模型预测的峰值质量分布较平，在0.5-0.6倍太阳质量之间（见图2）；而基于LAMOST光谱给出的富氦型热亚矮星的峰值质量在0.42倍太阳质量左右，远小于理论模型预测值 ...这一结果表明，富氦型热亚矮星除了通过双星并合渠道产生以外，应该还存在其它形成渠道，有待于后面进行更加深入地研究。 国家天文科学数据中心为天文观测设备和研究计划提供数据与技术服务。
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研究团队对项目中多次观测的目标星的恒星参数进行了分析，得到LK2观测恒星有效温度、表面重力加速度、金属丰度和视向速度的内部不确定性分别为81 K、0.15 dex、0.09 dex和5 km/s。
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其中有效温度、表面重力和金属丰度的误差分别为2.5%、0.25 dex和0.15dex。
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The stellar labels derived by SPCANet have precisions of 119 K for T<SUB>eff</SUB> and 0.17 dex for log ...], [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.
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The log g of CP1 ranges from 2.8 to 4.8 dex, peaking at 4.5 dex, and of CP2 it ranges from 2.0 to 5.0 ...dex, peaking at 3.6 dex, respectively.The [Fe/H] of CP1 and CP2 are from -1.4 to 0.4 dex, and the [Fe/H] of CP1 are on average higher than ...
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The log g of CP1 ranges from 2.8 to 4.8 dex, peaking at 4.5 dex, and of CP2 it ranges from 2.0 to 5.0 ...dex, peaking at 3.6 dex, respectively.The [Fe/H] of CP1 and CP2 are from -1.4 to 0.4 dex, and the [Fe/H] of CP1 are on average higher than ...
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The log g of CP1 ranges from 2.8 to 4.8 dex, peaking at 4.5 dex, and of CP2 it ranges from 2.0 to 5.0 ...dex, peaking at 3.6 dex, respectively.The [Fe/H] of CP1 and CP2 are from -1.4 to 0.4 dex, and the [Fe/H] of CP1 are on average higher than ...