Constant Intensities of Diffuse Interstellar Bands in the Spectrum of AE Aur

• Autorzy: Krełowski J. , Galazutdinov G. A. , Bondar A. , Byeong-Cheol L.

Identyfikatory

DOI

10.32023/0001-5237/67.1.5

• Języki publikacji: EN

Abstrakty

EN

Using spectra of the star AE Aur (HD 34078), covering the period 1997-2016, we prove that all strong diffuse interstellar bands are of the same intensity during the whole period of observations (inside 3-5% of the intensity). This is in sharp contrast to the behavior of both CH and CH+ features which, during the last six years, declined sharply by 13% and 28% respectively. Diffuse bands seem to behave more or less as interstellar atomic lines. We checked also the behavior of CaII lines which should be of constant intensities as the carrier fills the space evenly. Our observations confirm this and allow us to re-estimate the distance to HD 34078.

Słowa kluczowe

EN

ISM: clouds; ISM: molecules; ISM: lines and bands

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2017
• Tom: Vol. 67, No. 1
• Strony: 71--80
• Opis fizyczny: Bibliogr. 14 poz., tab., wykr.

Twórcy

autor

Krełowski J.

• Center for Astronomy, Nicholas Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

autor

Galazutdinov G. A.

• Instituto de Astronomia, Universidad Catolica del Norte, Av. Angamos 0610, Antofagasta, Chile
• Pulkovo Observatory, Pulkovskoe Shosse 65, Saint-Petersburg, 196140, Russia
• Special Astrophysical Observatory, Nizhnij Arkhyz, 369167, Russia

autor

Bondar A.

• International Center for Astronomical and Medico-Ecological Research, Zabolotnoho Str. 27, Kiev, Ukraine

autor

Byeong-Cheol L.

• Korea Astronomy and Space Science Institute 776, Daedeokdae-ro, Yuseong-gu, Daejeon 305-348, Korea

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).