Langbahn Team – Weltmeisterschaft

V883 Orionis

V883 Orionis

The location of V883 Orionis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Orion
Right ascension 05h 38m 18.102s[1]
Declination −07° 02′ 26.02″[1]
Characteristics
Variable type FU Ori
Astrometry
Proper motion (μ) RA: −0.938[1] mas/yr
Dec.: +1.490[1] mas/yr
Parallax (π)1.5259 ± 0.2923 mas[1]
Distance414[2] pc
Details
Mass1.29±0.02[2] M☉
Luminosity (bolometric)195[3] L☉
Age0.5[2] Myr
Other designations
V883 Ori, HBC 489
Database references
SIMBADdata

V883 Orionis is a protostar in the constellation of Orion. It is associated with IC 430 (Haro 13A), a peculiar Hα object surveyed by Guillermo Haro in 1952.[4] It is assumed to be a member of the Orion Nebula cluster at 414±7 pc.[2]

V883 Orionis, like most protostars, is surrounded by a circumstellar disc of dust. The dust has a water snow-line, a certain distance where the stellar irradiance from the star is low enough that water can freeze to snow. The water snow-line was directly imaged by ALMA, when a stellar outburst increased the amount of insolation and pushed the line out farther.[2] In 2023, it was announced that signs of water vapor had been detected in V883 Orionis' disc.[5]

  • Artist's impression of the planet-forming disc around V883 Orionis
  • Informative video about the planet-forming disc around V883 Orionis
  • Artist's impression of the water snow line around V883 Orionis, detected with ALMA
    Artist's impression of the water snow line around V883 Orionis, detected with ALMA
  • IC 429 and IC 430 next to the bright foreground star 49 Ori. V883 Ori is the faint star just beyond the tip of IC 429.
    IC 429 and IC 430 next to the bright foreground star 49 Ori. V883 Ori is the faint star just beyond the tip of IC 429.
  • V883 Ori (bright star) and part of IC 429 with the Hubble Space Telescope
    V883 Ori (bright star) and part of IC 429 with the Hubble Space Telescope

References

  1. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ a b c d e Cieza, Lucas A.; et al. (2016). "Imaging the water snow-line during a protostellar outburst". Nature. 535 (7611): 258–261. arXiv:1607.03757. Bibcode:2016Natur.535..258C. doi:10.1038/nature18612. PMID 27411631. S2CID 205249709.
  3. ^ Furlan, E. (May 2016). "The Herschel Orion Protostar Survey: Spectral Energy Distributions and Fits Using a Grid of Protostellar Models". The Astrophysical Journal Supplement Series. 224 (1): 5. arXiv:1602.07314. Bibcode:2016ApJS..224....5F. doi:10.3847/0067-0049/224/1/5.
  4. ^ Allen, D. A.; Strom, K. M.; Grasdalen, G. L.; Strom, S. E.; Merrill, K. M. (1975). "Haro 13a: A Luminous, Heavily Obscured Star in Orion?". Monthly Notices of the Royal Astronomical Society. 173: 47P–50P. Bibcode:1975MNRAS.173P..47A. doi:10.1093/mnras/173.1.47P.
  5. ^ "Astronomers find missing link for water in the Solar System". ESO. 8 March 2023. Retrieved 21 March 2023.


Quelle: https://en.wikipedia.org/wiki/V883_Orionis