Barnard 175

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Barnard 175
Nebula
VdB 152, Barnard 175 (noao-vdb152).jpg
Image of Barnard 175 obtained through the Mosaic camera on the Mayall 4-meter telescope at Kitt Peak National Observatory. In the top right is HH 450 and the thin red filements are supernova remnants
Observation data: J2000 epoch
Right ascension 22’ 13’ 33.3
Declination +70 15’ 25’’
Distance400  pc
DesignationsB175
See also: Lists of nebulae

Barnard 175, also known as B175, is a cometary-shaped Bok globule located around 400 parsecs from Earth in the constellation of Cepheus. It is embedded within the Cepheus Flare shell, a giant complex of molecular clouds. [1] [2] [3]

The southern edge of the object is illuminated by a B9.5V-type star known as BD+69 1231. This produces Ced 201, a prominent reflection nebula within Barnard 175. [2]

Contents

Image from the Hubble Space Telescope of a Bok globule with a low-mass protostar. It is located on the edge of a supernova remnant. Barnard 175.jpg
Image from the Hubble Space Telescope of a Bok globule with a low-mass protostar. It is located on the edge of a supernova remnant.

The only known Herbig-Haro object (HH) located in Barnard 175 is HH 450 located in Ced 201. HH 450X was initially classified as a knot but was later reclassified as a background galaxy. [2] IRAS source IRAS 22129+7000 is also located within Barnard 175.

It also contains the supernova remnant (SN) named SN G110.3+11.3. It is filamentous, with two red streaks named filament A and filament B. [2] This remnant will likely begin a frontal collision with the outflows of HH 450. The remnant is traveling at a speed of around 300 kilometers per second, with the outflows traveling at a speed of around 100 kilometers per second. This means that they will collide in about 1000 years from now. When they do collide, a fast radiative shock will wrap around them, leading to indentations in the remnant due to its lower density. However the remnant will eventually make its away towards Barnard 175. Numerical simulations show that this will drastically alter the appearance and structure of Barnard 175, possibly triggering star formation. [4]

References

  1. ↑ info@noirlab.edu. "vdB 152, Barnard 175". www.noirlab.edu. Retrieved 2025-12-05.
  2. 1 2 3 4 Rector, Travis A.; Schweiker, Heidi (2012-11-30), A Search for Herbig-Haro Objects in NGC 7023 and Barnard 175, arXiv, doi:10.48550/arXiv.1211.7190, arXiv:1211.7190, retrieved 2025-12-05
  3. ↑ (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36 Citoid/WMF (mailto:noc@wikimedia.org)&ssu=&ssv=&ssw=&ssx=eyJfX3V6bWYiOiI3ZjkwMDBiNzM3Mjg5YS05ODIzLTRhZWQtOTU1OS1mNTE5ZjQ5Y2U3YzcxLTE3NjQ5NDY4MjY0NjYwLTAwMTNmODUwYzY1Mzc5OTI4NDAxMCIsInJkIjoiaW9wLm9yZyIsInV6bXgiOiI3ZjkwMDAyOTczYzEyMy1jZDJhLTQxZjktOTY5NC01M2I5ZGQ0OGJhMjIxLTE3NjQ5NDY4MjY0NjYwLTY1NjUxYmRmM2Y3OGI0Y2QxMCJ9 "Radware Bot Manager Captcha". doi:10.1086/313076/fulltext/.{{cite journal}}: Check |url= value (help); Cite journal requires |journal= (help)
  4. ↑ Bally, John; Reipurth, Bo (2001-05-10). (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36 Citoid/WMF (mailto:noc@wikimedia.org)&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJ1em14IjoiN2Y5MDAwZDQ0ZGUzMzMtMTg3MS00ZDQwLWFjMWUtNTA2NTBmMjYzMDYxMS0xNzY0OTQ3NzAwMDU3MC03NjYwMmM2NmQ4YWY3YjZiMTAiLCJfX3V6bWYiOiI3ZjkwMDAyNTJjMWFiMS03ZTY2LTQ3YmYtYjYwNy0yMDRiOWFhNWM0OWMxLTE3NjQ5NDc3MDAwNTcwLTAwMTgwNGQyYmZjYTI5MTcwNDYxMCJ9 "When Star Birth Meets Star Death: A Shocking Encounter". The Astrophysical Journal. 552 (2): L159 –L162. doi:10.1086/320337. ISSN   0004-637X.{{cite journal}}: Check |url= value (help)
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