A Search for Polarization in Diffuse Interstellar Bands toward HD 197770

Details A Search for Polarization in Diffuse Interstellar Bands toward HD 197770 A Search for Polarization in Diffuse Interstellar Bands toward HD 197770

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...448l..49a&link_type=abstract

Astrophysical Journal Letters v.448, p.L49

Astronomy and Astrophysics

Astronomy

10

Ism: Dust, Extinction, Polarization

Scientific paper

Spectroscopy and spectropolarimetry in the wavelength range 5600--5800 A have been obtained for the line of sight toward HD 197770, which has a reported polarized 2175 A extinction bump. The 5780 and 5797 A diffuse interstellar bands (DIBs) are anomalously weak (by a factor >2) with respect to reddening, whereas the broader 5778 A band appears to be anomalously strong. None of these bands shows detectable polarization in excess of that in the continuum; aligned classical grains cannot be the carriers of these bands. The ratio of polarization to optical depth in the DIBs is marginally smaller than would be expected if the DIB carriers were the small, presumably carbonaceous, grains responsible for the 2175 A absorption.

Affiliated with

Also associated with

No associations

Rating

A Search for Polarization in Diffuse Interstellar Bands toward HD 197770 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 A Search for Polarization in Diffuse Interstellar Bands toward HD 197770, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search for Polarization in Diffuse Interstellar Bands toward HD 197770 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1170664