Astronomy:W43A

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Short description: X-ray star in the constellation Aquila
W43A
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aquila
Right ascension  18h 47m 41.14s[1]
Declination −01° 45′ 11.4″[1]
Characteristics
Spectral type OH
Variable type Asymptotic giant branch
Astrometry
Radial velocity (Rv)34[2] km/s
Distance2220+380
−400
[2] pc
Details
Luminosity12,000[3] L
Other designations
W 43A, IRAS 18450-0148, 2MASS J18474097-0144553
Database references
SIMBADdata

W43A or IRAS 18450-0148 is a late-type star with an envelope of OH/IR type with a magnetically collimated jet (a protoplanetary nebula).[4] The star is in the early stages of becoming a planetary nebula, a process that will take several thousand years.[2]

References

  1. 1.0 1.1 Spitzer Science, Center (2009). "VizieR Online Data Catalog: GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)". VizieR On-line Data Catalog. Bibcode2009yCat.2293....0S. 
  2. 2.0 2.1 2.2 Tafoya, Daniel; Imai, Hiroshi; Gómez, José F.; Nakashima, Jun-Ichi; Orosz, Gabor; Yung, Bosco H. K. (2020). "Shaping the Envelope of the Asymptotic Giant Branch Star W43A with a Collimated Fast Jet". The Astrophysical Journal 890 (1): L14. doi:10.3847/2041-8213/ab70b8. Bibcode2020ApJ...890L..14T. 
  3. Vickers, Shane B.; Frew, David J.; Parker, Quentin A.; Bojičić, Ivan S. (2015). "New light on Galactic post-asymptotic giant branch stars - I. First distance catalogue". Monthly Notices of the Royal Astronomical Society 447 (2): 1673. doi:10.1093/mnras/stu2383. Bibcode2015MNRAS.447.1673V. 
  4. Vlemmings, Wouter H.T.; Diamond, Philip J.; Imai, Hirosh (2006). "A magnetically collimated jet from an evolved star". Nature 440 (7080): 58–60. doi:10.1038/nature04466. PMID 16511488. Bibcode2006Natur.440...58V. 

Further reading