| タイトル | Interstellar extinction in the infrared - The molecular cloud toward HD 62542 |
| 著者（英） | Massa, D.; Martin, P. G.; Whittet, D. C. B.; Fitzpatrick, E. L. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1993-05-10 |
| 言語 | eng |
| 内容記述 | Near-IR photometry for the B-type main-sequence star HD 62542 is presented and employed to investigate the interstellar extinction curve in the wavelength range 0.44-3.5 microns. The ratio of total to selective extinction is deduced to be R(V) = 3.24 +/- 0.05, very similar to the average value for diffuse clouds. From the resulting visual extinction (A(V) = 1.20 +/- 0.08) and an assessment of the literature on the spectral type and luminosity of the star, a distance of 405 +/- 35 pc is derived. The normality of the extinction law in the visible and near-IR is in marked contrast to the anomalous UV extinction. These results support the hypothesis that the complex formed as an accumulation of diffuse cloud material swept up by stellar winds and radiation. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 93A36399 |
| 権利 | Copyright |
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