Sh 2-308, also designated as Sharpless 308, RCW 11, or LBN 1052, [1] and commonly known as the Dolphin-Head Nebula, is an H II region located near the center of the constellation Canis Major, composed of ionised hydrogen. [2] It is about 8 …

Sh2-308 （也称为 RCW 11 、 LBN 1052[1] 或 海豚星云）是一个 发射星云，位于 大犬座 中心附近的H II区域，由电离 氢 组成 [2]。 它位于夜空中最亮的恒星 天狼星 以南约8度处。 该星云呈气泡状，围绕著一颗名为 大犬座EZ 的 沃尔夫-拉叶星，这颗 恒星 正处于演化中前 超新星 阶段。 该星云距地球约4,530 光年 （1,389 秒差距） [3]，但一些研究表明恒星和星云的距离均达5,870光年（1,800秒差距） [4][5]。 还有人指出该星云距离 地球 只有1,875光年 (575秒差距) [6]。 ^ Sh …

2021年10月21日 · The windblown nebula has an age of about 70,000 years. Relatively faint emission captured by narrowband filters in the deep image is dominated by the glow of ionized oxygen atoms mapped to a blue hue. Presenting a mostly harmless outline, SH2-308 is also known as The Dolphin-head Nebula. Tomorrow’s picture: it’s a comet

SH2-308: The Dolphin-head Nebula Image Credit & Copyright: Nik Szymanek. Explanation: Blown by fast winds from a hot, massive star, this cosmic bubble is huge. Cataloged as Sharpless 2-308 it lies some 5,000 light-years away toward the constellation of the …

SH2-308: The Dolphin Head Nebula Image Credit & Copyright: Prabhu Kutti. Explanation: Blown by fast winds from a hot, massive star, this cosmic bubble is huge. Cataloged as Sharpless 2-308 it lies some 5,000 light-years away toward the well …

2025年2月28日 · Sh2-308 is a large bubble-like structure wrapped around an extremely large, bright type of star known as a Wolf-Rayet star — this particular star is called EZ Canis Majoris. These type of stars are among the brightest and most massive stars in the Universe, tens of times more massive than our own Sun. Thick winds continually poured off the ...

2023年3月29日 · Named Sh2-308 and dubbed the Dolphin-Head Nebula, the gas ball lies about 5,000 light years away and covers as much sky as the full moon — although it is much dimmer. The nearby red-tinged clouds on the left of the featured image may owe their glow and shape to energetic light emitted from the same Wolf-Rayet star.

撮影メモ： おおいぬ座の中央部・ο2星の約2.5度西に位置する淡い円盤状の星雲です。 視直径約40分の円形をしており，6.7等級の中心星は太陽系に最も近い特殊な青色巨星（ウォルフ・ライエ星）です。 星雲はこの星が放出したガス成分なので，惑星状星雲の一種と言えます。 電離した酸素原子による緑色のOIII線で発光していますが，肉眼で見ることはできません。 北西側に口のような構造が見られることから，「ミルクポッド星雲 (Milk-Pod Nebula)」というニック …

编录号为 夏普利斯 [3] 2-308（Sharpless 2-308）的这团星云，位在 大犬座 [4] 方向，离我们约有5,000光年远，所遮住的天区略大于满月。 依它所在的距离来 换算 [5]，这团星云的直径大约为60光年。 造就这个泡泡的大质量恒星，则是位于星云 中心附近 [6] 的明亮 沃夫-瑞叶型恒星 [7]。 由于 沃夫-瑞叶型恒星 [8]...

2024年6月7日 · 说明: 这团由炽热大质量恒星的高速恒星风所吹出的宇宙气泡，极为庞大。编录号为夏普利斯2-308（Sharpless 2-308）的这团星云，位在大犬座方向，离我们约有5,000光年远，所遮住的天区略大于满月。依它所在的距离来换算，这团星云的直径大约为60光年。