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恆星誕生線

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恆星誕生線是在赫羅圖上預測成為原恆星時,最初的質量-半徑線。在這個階段之前的原恆星仍被深埋在氣體和塵土的雲氣內,因此僅是輻射出紅外線的區域。當演化作用成稀薄的包層時,恆星成為可以看見的前主序帶天體,才能在赫羅圖上佔有一席之地。那些恆星初現位置的集合就稱為恆星誕生線。

它完全都在主序帶的右側。

這個名詞是在1983年由史蒂芬W. 史塔勒首先提出並介紹的。 [1]

恆星誕生線的位置與恆星結構、吸積率、和幾何形狀有關。這意味著,恆星誕生線的位置不能明確的界定,因此在上下文的關聯上,我們甚至可以稱之為恆星誕生帶

参考资料

[编辑]
  1. ^ Stahler, S. W. The Birthline for Low-Mass Stars. Astrophysical Journal. 1983, 274: 822. Bibcode:1983ApJ...274..822S. doi:10.1086/161495. 
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恆星誕生線
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