Astronomy:NGC 3576

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NGC 3576
Emission nebula
NGC 3576
Observation data: J2000.0 epoch
Right ascension 11h 11m 53.2s[1]
Declination−61° 18′ 26″[1]
Distance7,800[2] to 9,800[3] ly   (2,400[2] to 3,000[3] pc)
ConstellationCarina
DesignationsGAL 291.30-00.7, RCW 57A, BRAN 348A, GUM 38a[4]
See also: Lists of nebulae

NGC 3576 is a bright emission nebula and star-forming region in the southern constellation of Carina. It was discovered by John Frederick William Herschel on 16 March 1834.[5] Distance estimates for this complex range from 7.8[2] to 9.8 thousand light-years.[3]

Observations

This complex is located near the galactic plane along the Carina arm of the Milky Way galaxy.[3] It is approximately 100 light years across and is located near the Eta Carinae nebula,[6] forming the western section of RCW 57.[7] NGC 3576 consists of a giant, star-forming molecular cloud with a luminous H II region positioned just outside.[8] In the infrared, this is one of the brightest H II regions in the galaxy.[9] It is expanding into the molecular cloud and appears to be triggering further star formation.[10] Most of the ionization is believed to be due to two O-type stars, HD 97319 and HD 97484, and two B-type stars, HD 974999 and CPD–60◦2641.[7]

Many of the brightest stars in this formation are still enshrouded in their natal cocoons of gas and dust.[3] A majority of the stars display an infrared excess from the surrounding circumstellar disks.[3] Star formation appears to be progressing in a direction from the northeast to the southwest, with the youngest stars in the latter locale.[3] A very young cluster of massive stars with 130 identified members is embedded deep within the molecular cloud.[2]

  • The location of NGC 3576 (circled in red)
    The location of NGC 3576 (circled in red)
  • NGC 3576 in Hubble Palette by amateur astronomer Mark Johnston
    NGC 3576 in Hubble Palette by amateur astronomer Mark Johnston

References

  1. ↑ 1.0 1.1 Pavlinsky, M. et al. (May 2022). "SRG/ART-XC all-sky X-ray survey: Catalog of sources detected during the first year". Astronomy & Astrophysics 661: id. A38. doi:10.1051/0004-6361/202141770. Bibcode: 2022A&A...661A..38P. 
  2. ↑ 2.0 2.1 2.2 2.3 Persi, P. et al. (February 1994). "The young stellar population associated with the HII region NGC 3576". Astronomy and Astrophysics 282: 474–484. Bibcode: 1994A&A...282..474P. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Damineli, A. et al. (October 2002). Crowther, Paul A.. ed. "The Stellar Population of NGC 3576". Hot Star Workshop III: The Earliest Stages of Massive Star Birth. ASP Conference Proceedings (San Francisco: Astronomical Society of the Pacific) 267: 359. ISBN 1-58381-107-9. Bibcode: 2002ASPC..267..359D. 
  4. ↑ "NGC 3576". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3576. 
  5. ↑ Seligman, Courtney. "NGC Objects: NGC 3550 - 3599". Celestial Atlas. https://cseligman.com/text/atlas/ngc35a.htm#3576. 
  6. ↑ "APOD: 2008 March 26 - The NGC 3576 Nebula". https://apod.nasa.gov/apod/ap080326.html. 
  7. ↑ 7.0 7.1 García-Rojas, Jorge et al. (August 2004). "Chemical Abundances of the Galactic H II Region NGC 3576 Derived from Very Large Telescope Echelle Spectrophotometry". The Astrophysical Journal Supplement Series 153 (2): 501–522. doi:10.1086/421909. Bibcode: 2004ApJS..153..501G. 
  8. ↑ Persi, P. et al. (1987). Appenzeller, I.; Jordan, C.. eds. "Star formation in the southern complex region NGC 3576". Circumstellar Matter, Proceedings of the 122nd Symposium of the IAU Held in Heidelberg, F.R.G., June 23-27, 1986 122: 93–94. Bibcode: 1987IAUS..122...93P. 
  9. ↑ Maercker, M. et al. (April 2006). "L-band (3.5 μm) IR-excess in massive star formation. II. RCW 57/NGC 3576". Astronomy and Astrophysics 450 (1): 253–263. doi:10.1051/0004-6361:20054372. Bibcode: 2006A&A...450..253M. 
  10. ↑ Purcell, C. R. et al. (September 2009). "Multi-generation massive star-formation in NGC 3576". Astronomy and Astrophysics 504 (1): 139–159. doi:10.1051/0004-6361/200811358. Bibcode: 2009A&A...504..139P. 

Further reading

  • Saul, M. et al. (January 2015). "Observations of Warm Carbon Chain Chemistry in NGC 3576". The Astrophysical Journal 798 (1): id. 36. doi:10.1088/0004-637X/798/1/36. Bibcode: 2015ApJ...798...36S. 
  • Shih, Y. H. et al. (August 2009). "Near Infrared Polarimetric Imaging of the Giant H II region NGC 3576". in Soonthornthum, B.; Komonjinda, S.; Cheng, K. S. et al.. The Eighth Pacific Rim Conference on Stellar Astrophysics: A Tribute to Kam-Ching Leung. ASP Conference Series. 404. San Francisco: Astronomical Society of the Pacific. p. 27. Bibcode: 2009ASPC..404...27S. 
  • André, Ph. et al. (November 2008). "First 450 μm dust continuum mapping of the massive star-forming region NGC 3576 with the P-ArTéMiS bolometer camera". Astronomy and Astrophysics 490 (3): L27–L30. doi:10.1051/0004-6361:200810957. Bibcode: 2008A&A...490L..27A. 
  • Barbosa, C. L. et al. (November 2003). "Gemini Mid-Infrared Imaging of Massive Young Stellar Objects in NGC 3576". The Astronomical Journal 126 (5): 2411–2420. doi:10.1086/378960. Bibcode: 2003AJ....126.2411B. 
  • Barbosa, C. L. D. R.; Damineli, A.; Blum, R. D.; Conti, P. S. (2003). "NGC 3576 IRS 1 in the Mid Infrared". in De Buizer, James M.; van der Bliek, Nicole S.. Galactic Star Formation Across the Stellar Mass Spectrum. ASP Conference Series. 287. San Francisco: Astronomical Society of the Pacific. pp. 225–229. ISBN 1-58381-130-3. Bibcode: 2003ASPC..287..225B. 
  • Figuerêdo, E. et al. (November 2002). "The Stellar Content of Obscured Galactic Giant H II Regions. IV. NGC 3576". The Astronomical Journal 124 (5): 2739–2748. doi:10.1086/343831. Bibcode: 2002AJ....124.2739F. 
  • Boreiko, R. T.; Betz, A. L. (August 1997). "Far-Infrared Spectroscopy of C II and High-J CO Emission from Warm Molecular Gas in NGC 3576". The Astrophysical Journal Supplement Series 111 (2): 409–417. doi:10.1086/313026. Bibcode: 1997ApJS..111..409B. 

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