Interstellar extinction law near the Galactic equator along the Camelopardalis, Perseus and Cassiopeia border

Details Interstellar extinction law near the Galactic equator along the Camelopardalis, Perseus and Cassiopeia border Interstellar extinction law near the Galactic equator along the Camelopardalis, Perseus and Cassiopeia border

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...392..295z&link_type=abstract

Astronomy and Astrophysics, v.392, p.295-300 (2002)

Astronomy and Astrophysics

Astrophysics

6

Interstellar Medium: Extinction, Stars: Fundamental Parameters

Scientific paper

The interstellar reddening law is investigated along the Galactic equator near the Cam, Per and Cas border. We used seven-color photometry of O-B5 stars in the Vilnius photometric system in the optical range, photometry of the ANS orbiting observatory in the ultraviolet range and broad-band color indices V- K in the infrared. In the optical range (345-660 nm) the interstellar reddening law is found to be nearly normal. In the ultraviolet wavelengths shorter than the 330 nm ANS passband, the extinction is found to be slightly larger than the average. Some stars, for example HD 24432, exhibit much stronger ultraviolet extinction which is well seen already in the 345 nm passband of the Vilnius system. However, such stars are rare. The ratio R = A_V/EB-V is found to be 2.9, i.e., it is slightly smaller than the normal. This is confirmed by the study of the wavelength of maximum polarization of reddened stars in the area. Both the ultraviolet anomaly and the smaller R value are in good agreement with the Cardelli et al. (\cite{carcm88}) prediction. We conclude that in the investigated area it is safe to use normal ratios of color excesses to calculate reddening-free Q-parameters for the classification of stars from photometric data in the optical spectral range.

Affiliated with

Also associated with

No associations

Rating

Interstellar extinction law near the Galactic equator along the Camelopardalis, Perseus and Cassiopeia border 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 Interstellar extinction law near the Galactic equator along the Camelopardalis, Perseus and Cassiopeia border, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interstellar extinction law near the Galactic equator along the Camelopardalis, Perseus and Cassiopeia border will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1311050