IR properties of stellar bowshock nebulae Virtual Observatory Resource

Authors
  1. Kobulnicky H.A.
  2. Schurhammer D.P.
  3. Baldwin D.J.
  4. Chick W.T.
  5. Dixon D.M.,Lee D.
  6. Povich M.S.
  7. Published by
    CDS
Abstract

Arcuate infrared nebulae are ubiquitous throughout the Galactic Plane and are candidates for partial shells, bubbles, or bowshocks produced by massive runaway stars. We tabulate infrared photometry for 709 such objects using images from the Spitzer Space Telescope, the Wide-field Infrared Explorer, and the Herschel Space Observatory (HSO). Of the 709 objects identified at 24 or 22 {mu}m, 422 are detected at the HSO 70 {mu}m bandpass. Of these, only 39 are detected at HSO 160 {mu}m. The 70 {mu}m peak surface brightnesses are 0.5-2.5 Jyr/arcmin^2^. Color temperatures calculated from the 24 to 70 {mu}m ratios range from 80 to 400 K. Color temperatures from 70 to 160 {mu}m ratios are systematically lower, 40-200 K. Both of these temperature are, on average, 75% higher than the nominal temperatures derived by assuming that dust is in steady-state radiative equilibrium. This may be evidence of stellar wind bowshocks sweeping up and heating-possibly fragmenting but not destroying-interstellar dust. Infrared luminosity correlates with standoff distance, R_0_, as predicted by published hydrodynamical models. Infrared spectral energy distributions are consistent with interstellar dust exposed to either single radiant energy density, U=10^3^-10^5^ (in more than half of the objects) or a range of radiant energy densities U_min_=25 to U_max_=10^3^-10^5^ times the mean interstellar value for the remainder. Hence, the central OB stars dominate the energetics, making these enticing laboratories for testing dust models in constrained radiation environments. The spectral energy densities are consistent with polycyclic aromatic hydrocarbon fractions q_PAH_~<1% in most objects.

Keywords
  1. Nebulae
  2. Galaxy classification systems
  3. OB stars
  4. Infrared photometry
  5. Stellar spectral types
  6. Effective temperature
  7. Stellar radii
  8. Stellar distance
  9. Galaxy planes
  10. Milky Way Galaxy
Bibliographic source Bibcode
2017AJ....154..201K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/201
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/154/201
Document Object Identifer DOI
doi:10.26093/cds/vizier.51540201

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/201
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/201
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/201
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https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/201/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/201/table1?
IVOA Cone Search SCS
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/201/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/201/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/201/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/201/table5?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/201/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/201/table5?

History

2018-08-08T14:16:29Z
Resource record created
2018-08-08T14:16:29Z
Created
2018-08-27T08:05:45Z
Updated

Contact

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