CCD observations of diffuse interstellar bands in reflection nebulae

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

71

Charge Coupled Devices, Diffuse Radiation, Interstellar Matter, Reflection Nebulae, Spectral Bands, Stellar Spectra, Molecular Clouds, Signal To Noise Ratios

Scientific paper

CCD spectra of 59 stars have been obtained in order to measure diffuse band strengths between 5690 and 5870 A. Most (37) off the stars are in reflection nebulae, and the rest are relatively unreddened comparison stars. The pixel spacing corresponds to 0.2 A, and the signal-to-noise (S/N) ratio ranges from 60 up to 600. Six diffuse bands are measurable in the data: 5705, 5778, 5780, 5797, 5844, and 5849 A. Based on the degree of correlation between the bands in pairs, as well as with E(B-V) and the 2175 A extinction bump, the bands can be divided into three groups. The first one consists of the narrow bands at 5780, 5797, and 5849 A. The second group contains the broad bands at 5778 and 5844 A, while 5705 A lies in between these groups in terms of correlation behavior. The second group correlates very badly with E(B-V), and the very broad 5778 A band is the only one that shows a very good correlation with the 2175 A bump.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

CCD observations of diffuse interstellar bands in reflection nebulae 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 CCD observations of diffuse interstellar bands in reflection nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CCD observations of diffuse interstellar bands in reflection nebulae will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1340065

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.