Sharpless 2-302 in Luminance and H alpha (Lawrence E. Hazel)

Celestial hemisphere: Southern · Constellation: Puppis (Pup)

Sharpless 2-302 in Luminance and H alpha, Lawrence E. Hazel

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Sharpless 2-302 in Luminance and H alpha

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Sharpless 2-302 in Luminance and H alpha

This is a luminance-Halpha image of Sh2-307 in Puppis. A small cluster, NGC 2409 is just below

the nebula. Will post an RGB image later.

Another cluster visible in the photo is Bochum 5, a sparse cluster surrounded by Sh2-302

itself.

Sh 2-302 is part of molecular cloud A and is located at a distance of 1800 pc.

This HII region lies within the molecular cloud [JKK96] A and is located well in front of the GS234-02 supershell. It contains the infrared star cluster [DBS2003] 4. Avedisova concludes that it is ionised by stars associated with the Bochum 5 cluster, including the O9.5 V star HD 59986, and places it in star formation region SFR 232.56+0.89, along with several other HII regions and reflection nebulae including VDB 97.

The class for HD 59986 is supported by a 1995 paper by Russeil, the Georgelins and colleagues. SIMBAD, however, gives the class for HD 59986 as B5, which would make it too cool to be an ionising star.

Cited from galaxymap,org/cat

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Sharpless 2-302 in Luminance and H alpha

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