3D hydrodynamical simulations of stellar photospheres with the CO5BOLD code: photometric colors of a late-type giant

Details 3D hydrodynamical simulations of stellar photospheres with the CO5BOLD code: photometric colors of a late-type giant 3D hydrodynamical simulations of stellar photospheres with the CO5BOLD code: photometric colors of a late-type giant

2009-10-18

arxiv.org/abs/0910.3412v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Paper presented at IAU General Assembly Joint Discussion 10 "3D Views on Cool Stellar Atmospheres: Theory Meets Observation";

Scientific paper

We present synthetic broad-band photometric colors of a late-type giant located close to the RGB tip (T_eff = 3640 K, log g = 1.0 and [M/H] = 0.0). Johnson-Cousins-Glass BVRIJHK colors were obtained from the spectral energy distributions calculated using 3D hydrodynamical and 1D classical stellar atmosphere models. The differences between photometric magnitudes and colors predicted by the two types of models are significant, especially at optical wavelengths where they may reach, e.g., \Delta V~0.16, \Delta R~0.13 and \Delta (V-I)~0.14, \Delta (V-K)~0.20. Differences in the near-infrared are smaller but still non-negligible (e.g., \Delta K~0.04). Such discrepancies may lead to noticeably different photometric parameters when these are inferred from photometry (e.g., effective temperature will change by \Delta T_eff~60 K due to difference of \Delta (V-K)~0.20).

Affiliated with

Also associated with

No associations

Rating

3D hydrodynamical simulations of stellar photospheres with the CO5BOLD code: photometric colors of a late-type giant does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with 3D hydrodynamical simulations of stellar photospheres with the CO5BOLD code: photometric colors of a late-type giant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3D hydrodynamical simulations of stellar photospheres with the CO5BOLD code: photometric colors of a late-type giant will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-715930