HD 259431

The region around MWC 147

MWC 147 also known as HD 259431 is a star 2,600 light-years away the constellation of Monoceros[1] This star is classed as a young stellar object and has been instrumental in helping astronomers understand the formation of stars.[2] A large star, with a large surrounding dust cloud,[3] MWC 147 has given astronomers a clear picture of the mechanics of the accretion processes that form stars.[4]

Illustration of cross-section of protoplanetary disk around MWC 147
Close-up on MWC 147

Star MWC 147 was observed in the near and mid-infrared. The near-infrared studies showed dust matter at a temperature of several thousand kelvins in the innermost regions of the protoplanetary disk. In the mid-IR were lower temperatures. These observations showed that the disk around the star disk extends over 100 AU.

The resulting research model assumes that the star increasing in mass at a rate 7×10−6 solar masses per year, or the equivalent of about two Earth masses per year. MWC has a mass of 6.6 M☉ and is younger than 500 000 years. This means that the life of this star is expected to be only about 35 million years.

Characteristics

The star is found in the night sky at RA 06 h 33 m 05.19 and Dec 10° 19' 19.9869". It has a temperature of 14 125 K and spectral type of B6ep.[5] It is also known as J06330519 + 1019199, HD 259431, HIP 31235 and SAO 95823

References

  1. ↑ It Takes A Very Large Telescope To See Inside MWC 147.
  2. ↑ Stefan Kraus, Thomas Preibisch, Keiichi Ohnaka, Detection of an inner gaseous component in a Herbig Be star accretion disk: Near- and mid-infrared spectro-interferometry and radiative transfer modeling of MWC 147. (Astrophysical Journal. Nov 2007).
  3. ↑ T. Bagnoli, R. van Lieshout, L. B. F. M. Waters, G. van der Plas, B. Acke, H. van Winckel, G. Raskin, P. D. Meerburg An Inner Gaseous Disk around the Herbig Be Star MWC 147 (7 Oct 2010).
  4. ↑ The Region Around MWC 147 at European Space Agency website.
  5. ↑ MWC+147 at simbad database.
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