This page describes an image 仙女座星圖
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Diagram caption:
仙女座及其明亮恆星與周邊星座示意圖。從頂部開始沿順時針方向,仙女座周邊的星座依次為:仙後座、蠍虎座、 飛馬座、雙魚座、白羊座、三角座和英仙座。仙女座最亮的恆星壁宿一位於該星座的下部區域。它與飛馬座中的三顆恆星共同構成了著名的飛馬座四邊形這一星群。從壁宿一向東北方向延伸,接下來兩顆明亮的恆星奎宿九和天大將軍一連成一條明顯的星鍊。
仙女座是北天星座,在北半球秋季的夜空中最為顯著。整個北半球和南半球大部分溫帶地區均可觀測到該星座,但在南極及亞南極地區則完全不可見。
仙女座最著名的天體——仙女座星系在圖中以紅色橢圓標注,它的梅西耶星表編號是M31。左邊的黃色圓圈標出了疏散星團NGC 752的位置,右邊的綠色圓圈標出了行星狀星雲NGC 7662(藍色雪球星雲)。
該圖的縱軸為赤緯,橫軸為赤經,方向為上北下南左東右西。圖中標注的恆星大小對應其視星等——衡量天體視亮度的標準,較大的圓點代表著較亮的恆星。圖中的希臘字母標注著星座中最亮的恆星。這些恆星按亮度排序,最亮的一般被標記為α星,第二亮的一般為β星,等等,不過這種字母排序並不總是和實際亮度排序完全一致。圖中虛線標注的是國際天文學聯合會劃定的星座邊界,綠色實線則是一種常見的星座形象連線。需要注意的是,在實際觀測時,這些邊界與連線都不會出現在天空中。
Diagram credit: 國際天文學聯合會天文教育辦公室(IAU OAE)根據國際天文學聯合會和《天空與望遠鏡》的原文改編. Credit Link
Diagram translation status: Not yet approved by a reviewer
Diagram translators: An automated transliteration from the simplified Chinese translation by - Xiao Jingyu
Diagram license: Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
Related glossary terms:
仙女座
, 仙女座星系
, 星座
, 疏散星團
, 行星狀星雲
, 視星等
, 赤經(RA)
, 赤緯
Categories:
Naked Eye Astronomy
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In Other Languages
英語: Andromeda Constellation Map巴西葡萄牙語: Mapa da Constelação de Andrômeda
義大利語: Mappa della costellazione di Andromeda
西班牙語: Mapa de la constelación de Andrómeda
阿拉伯語: خريطة كوكبة أندروميدا
法語: Carte de la constellation d'Andromède
簡體中文: 仙女座星图
德語: Andromeda-Sternbildkarte
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