SIMBAD references

2015ApJ...802..138H - Astrophys. J., 802, 138 (2015/April-1)

Discovery of resolved debris disk around HD 131835.

HUNG L.-W., FITZGERALD M.P., CHEN C.H., MITTAL T., KALAS P.G. and GRAHAM J.R.

Abstract (from CDS):

We report the discovery of the resolved disk around HD 131835 and present the analysis and modeling of its thermal emission. HD 131835 is a ∼15 Myr A2 star in the Scorpius-Centaurus OB association at a distance of 122.7–12.8+16.2 pc. The extended disk has been detected to ∼ 1.5" (200 AU) at 11.7 and 18.3 µm with T-ReCS on Gemini South. The disk is inclined at an angle of ∼75° with the position angle of ∼61°. The flux of the HD 131835 system is 49.3±7.6 and 84±45 mJy at 11.7 and 18.3 µm, respectively. A model with three grain populations gives a satisfactory fit to both the spectral energy distribution and the images simultaneously. This best-fit model is composed of a hot continuous power-law disk and two rings. We characterized the grain temperature profile and found that the grains in all three populations are emitting at temperatures higher than blackbodies. In particular, the grains in the continuous disk are unusually warm, even when considering small graphite particles as the composition.

Abstract Copyright:

Journal keyword(s): circumstellar matter - infrared: stars - stars: individual: HD 131835

Simbad objects: 10

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2015ApJ...802..138H and select 'bookmark this link' or equivalent in the popup menu


2019.10.21-05:50:54

© Université de Strasbourg/CNRS

    • Contact