Sharpless 157 (WR 157)

[Sh2 157]

About this image

This image was obtained with the wide-field view of the Mosaic camera on the Mayall 4-meter telescope at Kitt Peak National Observatory. It shows a portion of the massive star-forming region cataloged as Sharpless 157. The gas is glowing from the presence of hot, massive stars that recently formed from gas inside this nebula, including the Wolf-Rayet star WR 157. The ultraviolet light from these stars not only cause the gas to glow, but also sculpt the more dense regions (seen in yellow). It is estimated the gas inside this nebula amount to 700 times the mass of the Sun. The image was generated with observations in Oxygen [OIII] (blue), Hydrogen-Alpha (red) and Sulphur [SII] (green) filters. In this image, North is left, East is down.

More: stars page.

Minimum credit line: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOAO/AURA/NSF)

Downloadable versions:
500 x 320 201 KB color JPG (on this page)
1000 x 641 748 KB color JPG
2000 x 1282 2.42 MB color JPG
4000 x 2563 3.2 MB color JPG
7133 x 4570 9.11 MB color JPG
7133 x 4570 65.13 MB color TIFF
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