Gray Extinction in the Orion Trapezium
Journal
Date Issued
2016
Author(s)
Abstract
We estimated distances to several Orion Trapezium stars using our CaII-method and confirm the distance recommended by Menten et al. However, we found that in the case of HD 37020 both individual distances (based on the trigonometric VLBI parallax and/or CaII-method) differ from the spectrophotometric distance by a factor of 2.5. We interpret this fact as a result of presence of gray (neutral) extinction of about 1.8 mag in front of this star. The correctness of the applied spectral type/ luminosity class, Sp/L, (based on new original spectra from HARPS-N) and measurements of color indices is discussed.
Volume
66
Issue
4
Start page
469
Issn Identifier
0001-5237
Ads BibCode
2016AcA....66..469K
Rights
open.access
File(s)![Thumbnail Image]()
Loading...
Name
pap_66_4_5.pdf
Size
385.94 KB
Format
Adobe PDF
Checksum (MD5)
3bf62f6080c14181ce69bccfcb5601ee