Celestial hemisphere:  Northern  ·  Constellation: Sagitta (Sge)  ·  Contains:  Sh2-84
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Sh2 84 HA RGB, Jerry Yesavage
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Sh2 84 HA RGB

Getting plate-solving status, please wait...
Sh2 84 HA RGB, Jerry Yesavage
Powered byPixInsight

Sh2 84 HA RGB

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Description

From Galaxymap:

This HII region, also called LBN 131, is near in the sky to the Wolf-Rayet star WR 128. Both Sharpless and Avedisova list WR 128 as an ionising star. However, there is some controversy about whether Sh 2-84 is part of the ring nebula surrounding this star or lies at another distance.

A look at this region in hydrogen-alpha reveals that although WR 128 lies in this direction, Sh 2-84 appears to be the brightest part of an enormous ring of ionised gas that is not centred on WR 128 but may instead surround the O7.5 I supergiant QZ Sge. Given the size of the ring it may be much closer than the Wolf-Rayet star.

It also seems possible that both QZ Sge and WR 128 contribute to the nebulosity seen in this direction and so Sh 2-84 is not a single object.

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