Sh 2-279

Sh 2-279{{cite simbad This whole region in Orion's Sword was also later catalogued as Orion 1c. In 1966, van den Bergh distinguished the weak clustering of reflection nebulae that includes Sh 2-279 as Ori R2.{{Cite journal The Running Man Nebula is a popular target for amateur astrophotographers, as it lies close to the Orion Nebula and has many nearby guide stars. The outline of the running man shows up primarily in photographs; it is difficult to perceive visually through telescopes, though the reflection nebula itself is visible in small to medium apertures in dark skies. ==Ionization Source==

The whole reflection nebula region is likely excited by the hot young star (YSO) called c Orionis, 42 Orionis or HD 37018{{cite simbad == Proplyds in NGC 1977 ==

One candidate proplyd was discovered in NGC 1977 with the Hubble Space Telescope in 2012. The object showed a bent protostellar jet and a possible ionization front facing 42 Orionis, suggesting it is a proplyd. In 2016 a group of astronomers discovered six proplyds with the Hubble Space Telescope and one proplyd with the Spitzer Space Telescope. The proplyds are pointing to the B-star 42 Orionis, which is the main source of ultraviolet radiation in this region. This ultraviolet light is photoevaporating the proto-planetary disks and the stellar wind of 42 Orionis is shaping the gas into cometary tails. Proplyds were first discovered in large numbers in the Orion Nebula, but there the ultraviolet source responsible for the photoevaporation is the O-type star Theta1 Orionis C. 42 Orionis is the first instance of a B-type star being responsible for the photoevaporation. ==Image gallery==

File:Orion Nebula LRGB 2.jpg|Image of the Running Man nebula and its proximity to the Orion nebula. File:NGC1977 CDK Large03.jpg|NGC 1977, Running Man Nebula, by W4SM using 17" PlaneWave CDK, Louisa, VA File:NGC 1977 proplyds zoom.png|Largest proplyd in NGC 1977 seen by Hubble File:Proplyd NGC 1977.png|Proplyd imaged by the Spitzer Space Telescope is the elongated object on the upper left. 42 Orionis is in the middle and it is surrounded by glowing dust. File:NGC 1977 proplyds Spitzer Hubbe JWST.jpg|Proplyds around 42 Orionis with Spitzer, JWST and Hubble ==References==