NGC 7538
Diffuse nebula | |
---|---|
Observation data: J2000.0 epoch | |
Subtype | emission or reflection |
Right ascension | 23h 13m 45.7s[2] |
Declination | +61° 28′ 21″[2] |
Distance | 9,100[3] ly (2,800 pc) |
Apparent dimensions (V) | 9′.00 × 6′.0 |
Constellation | Cepheus |
Notable features | Contains largest known protostar |
Designations | Dreyer's Object, Sharpless 158 |
NGC 7538, near the more famous Bubble Nebula, is located in the constellation Cepheus. It is located about 9,100 light-years from Earth. It is home to the biggest yet discovered protostar which is about 300 times the size of the Solar System.[4] It is located in the Perseus Arm of the Milky Way and is probably part of the .[3] It is a region of active star formation including several luminous near-IR and far-IR sources.[3] Stars in NGC 7538 are mainly low-mass pre-main-sequence stars.[5]
References[]
- ^ Fallscheer; Reid; Di Francesco; Martin; Hill; et al. (2013). "Herschel Reveals Massive Cold Clumps in NGC 7538". Astrophysical Journal. 773 (2): 102. arXiv:1307.0022. Bibcode:2013ApJ...773..102F. doi:10.1088/0004-637x/773/2/102.
- ^ a b "NGC 7538". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-10-20.
- ^ a b c Balog, Z.; Kenyon, S. J.; Lada, E. A.; Barsony, M.; et al. (2004). "A Near-Infrared (JHK) Survey of the Vicinity of the H II Region NGC 7538: Evidence for a Young Embedded Cluster". The Astronomical Journal. 128 (6): 2942–2953. arXiv:astro-ph/0409115. Bibcode:2004AJ....128.2942B. doi:10.1086/425548.
- ^ "A DETAILED STUDY OF THE ACCRETION DISK SURROUNDING THE HIGH-MASS PROTOSTAR NGC 7538 S" (PDF). arxiv.org. Retrieved 26 November 2021.
- ^ Symposium, International Astronomical Union; Union, International Astronomical (2007-05-28). Triggered Star Formation in a Turbulent Interstellar Medium (IAU S237). Cambridge University Press. p. 458. ISBN 978-0-521-86346-9.
External links[]
- Media related to NGC 7538 at Wikimedia Commons
Categories:
- NGC objects
- Cepheus (constellation)
- Diffuse nebulae
- Sharpless objects
- Star-forming regions