Interstellar extinction toward symbiotic stars

Using diffuse interstellar bands (DIBs) at 5780 A, 5797 A and 6613 A, visible in the high resolution spectra, and measuring their equivalent widths, we estimate the interstellar extinction toward seven symbiotic stars. We find \(E_{B-V}\)= \(1.28 \pm 0.10\) for AS 289, \(E_{B-V}\)= \(1.55 \pm 0.10\)...

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Bibliographic Details
Published in:arXiv.org 2020-06
Main Authors: Zamanov, R K, Marchev, V D, Stoyanov, K A
Format: Article
Language:English
Subjects:
Diffuse interstellar bands
Galaxies
Interstellar extinction
Symbiotic stars
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Summary:Using diffuse interstellar bands (DIBs) at 5780 A, 5797 A and 6613 A, visible in the high resolution spectra, and measuring their equivalent widths, we estimate the interstellar extinction toward seven symbiotic stars. We find \(E_{B-V}\)= \(1.28 \pm 0.10\) for AS 289, \(E_{B-V}\)= \(1.55 \pm 0.10\) for BI Cru, \(E_{B-V}\)= \(0.63 \pm 0.10\) for HD330036, \(E_{B-V}\)= \(0.33 \pm 0.05\) for V2756 Sgr, \(E_{B-V}\)= \(0.30 \pm 0.05\) for V2905 Sgr, \(E_{B-V}\)= \(1.52 \pm 0.11\) for V417 Cen, \(E_{B-V}\)= \(0.81 \pm 0.10\) for PN Sa 3-22. The derived values are in agreement with the extinction through the Galaxy.
ISSN:2331-8422