HD 65750

HD 65750

The nebula surrounding HD 65750
Observation data
Epoch J2000      Equinox J2000
Constellation Carina
Right ascension 07h 56m 50.94795s[1]
Declination −59° 07′ 32.7605″[1]
Apparent magnitude (V) 8.33[2]
Characteristics
Spectral type M2II-III[2]
U−B color index +2.18[3]
B−V color index +1.93[3]
Astrometry
Radial velocity (Rv)24.20[2] km/s
Proper motion (μ) RA: -3.05[1] mas/yr
Dec.: 8.70[1] mas/yr
Parallax (π)3.81 ± 0.40[1] mas
Distanceapprox. 860 ly
(approx. 260 pc)
Details[4]
Surface gravity (log g)0.6 cgs
Temperature3600 K
Metallicity [Fe/H]-0.4 dex
Other designations
V341 Car, CD-58° 1926, HD 65750, HIP 38834, SAO 235638, HR 3126[2]
Database references
SIMBADdata

HD 65750, also known as V341 Carinae is a bright red giant star in the constellation Carina. It is surrounded by a prominent reflection nebula,[5][2] known as IC 2220, nicknamed the Toby Jug Nebula.

Characteristics

HD 65750 is located about 900 light years away, and has an apparent magnitude of 8.33 and a metallicity just 40% of the Sun. It is part of the Diamond Cluster moving group.

The star has a radial velocity of 20 km/s.[6]

Nebulae

The nebulae is a mystery as the variation in nebulae brightness appear to be unrelated to the host star.[7] One theory is that rather than being an accreting protoplanetary disk the star may be an evolved star that is losing material.[8][9]

References

  1. 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 4 5 "HD 65750". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 January 2017.
  3. 1 2 Dachs, J. (2000). "On the photometric variations of the red giant HD 65750 and of the surrounding reflection nebula IC 2220". Astronomy and Astrophysics. 63 (3): 353–362. Bibcode:1978A&A....63..353D.
  4. ↑ Castilho, B. V. (2000). "Detailed analysis of a sample of Li-rich giants". Astronomy and Astrophysics. 364: 674–682. Bibcode:2000A&A...364..674C.
  5. ↑ http://www.astrostudio.org/xhip.php?hip=38834
  6. ↑ IC 2220 - The Toby Jug Nebula.
  7. ↑ Dachs, J.; Isserstedt, J.; Rahe, J., On the photometric variations of the red giant HD 65750 and of the surrounding reflection nebula IC 2220, Astronomy and Astrophysics, vol. 63, no. 3, Feb. 1978, p. 353-362.
  8. ↑ Humphreys, R. M. & Ney, E. P., Infrared observations of HD 65750, a red giant in a reflection nebula. Astronomy and Astrophysics, (1974) Vol. 30, p. 159 - 160.
  9. ↑ ESO, Garching, Germany A close look at the Toby Jug Nebula. Astronomy magazine October 14, 2013.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.