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2026年CNAO选拔赛第一题-星等 - 版本历史
2026-06-06T22:49:07Z
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YanHe：无解答
2026-06-06T13:14:43Z
<p>无解答</p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">←上一版本</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2026年6月6日 (六) 13:14的版本</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >第1行：</td>
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<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>{{<del class="diffchange diffchange-inline">需要编辑</del>}}</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{<ins class="diffchange diffchange-inline">需要解答</ins>}}</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">== 题目 ==</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== 解答 ==</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">==题目==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">1. 星等</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">(1)比邻星的视差是 0.7687 角秒，视星等为 11.1 等，计算其绝对星等</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">（2）AB 星等， 1 Jy= 10<sup>-26</sup>W⋅ m <sup>－2</sup>⋅ Hz<sup>-1</sup>= 10 <sup>－23</sup>erg⋅ m <sup>－2</sup>⋅ Hz<sup>-1</sup>, 𝑚 =−2.5𝑙𝑜𝑔<sub>10</sub> ( 𝐸/3434𝐽𝑦)，已知𝜈𝑓(𝜈) = 𝜆𝑓( 𝜆),求𝑓(𝜈)关于𝑓 (𝜆)（单位 erg·m<sup>-2</sup>埃<sup>-1</sup>）和𝜆（单位为埃）的关系式</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">（3）已知星等和流量的关系为𝑚 = −2.5𝑙𝑜𝑔<sub>10</sub>𝐸 + 𝑍𝑃，ZP 是有关于仪器的常量，对于星系，星云等扩展源的亮度，通常以面亮度𝜇来衡量，𝜇的单位是星等每平方角秒（𝑚𝑎𝑔/𝑎𝑟𝑐𝑠𝑒𝑐<sup>2</sup>） ，计算公式为𝜇 = 𝑚 + 2.5𝑙gS（S 的单位为平方角秒） 。对于一个扩展源，求其面亮度变化和其沿视线方向的距离变化的关系，请用适当的计算说明</ins></div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==解答==</div></td></tr>
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YanHe
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RT.x：创建页面，内容为“{{需要编辑}} == 题目 == == 解答 ==”
2026-06-06T12:11:18Z
<p>创建页面，内容为“{{需要编辑}} == 题目 == == 解答 ==”</p>
<p><b>新页面</b></p><div>{{需要编辑}}<br />
== 题目 ==<br />
<br />
== 解答 ==</div>
RT.x