Sh 2-247
Coordinates: (188.93°, 0.79°)
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According to a 1989 study, Sh 2-247 is part of the Gem OB1 association, contains 37 thousand solar masses of gas and dust at a distance of 2200 pc, and appears to be physically connected through CO filaments with Sh 2-252. It is ionised by the B0 III giant LS V +21 27.
Avedisova places Sh 2-247 in the complex star formation region SFR 188.93+0.79 with 51 components, including 9 masers, several infrared star clusters, at least 4 molecular clouds, and the young stellar object IRAS 06058+2138. In 1984 she gave a 3500 pc distance estimate but corrected this to 2000 pc in 1989.
The available distance estimates suggests a location on the near side of the Perseus arm.
Avedisova places Sh 2-247 in the complex star formation region SFR 188.93+0.79 with 51 components, including 9 masers, several infrared star clusters, at least 4 molecular clouds, and the young stellar object IRAS 06058+2138. In 1984 she gave a 3500 pc distance estimate but corrected this to 2000 pc in 1989.
The available distance estimates suggests a location on the near side of the Perseus arm.
The Sh 2-247 molecular cloud contains 37 thousand solar masses at a distance of 2200 pc and appears to be physically connected through CO filaments with Sh 2-252. The exciting star is LS V 21 27 (B0 III star).[1]
Sh 2-247 is part of the Gem OB1 molecular cloud complex at a distance of about 2000 pc. [2]
Sh 2-247 is part of the Gem OB1 molecular cloud complex at a distance of about 2000 pc. [2]
Notes
1. ^ Koempe, C., Baudry, A., Joncas, G., et al. (1989). "Multi-line observations and analysis of the Sharpless 247/252 gas complex", Astronomy and Astrophysics, Vol. 221, 295-310. [1989A&A...221..295K]
2. ^ Carpenter, John M., Snell, Ronald L., & Schloerb, F. Peter (1995). "Anatomy of the Gemini OB1 molecular cloud complex", The Astrophysical Journal, Vol. 445, 246-268. [1995ApJ...445..246C]
Distance estimates
2000 pc [1995ApJ...445..246C]2200 pc [1989A&A...221..295K]
3500 pc +/- 800 [1984NInfo..56...59A]
2000 pc [1989BAICz..40...42A]
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Most of the sources used to create these nebula descriptions are listed in the
notes section for each description. In some cases,
for example the Avedisova, Humphreys and Reed catalogs, the source is used extensively and is not listed in the
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