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Investigation of the UV Radiation Process in NGC 2023

Published online by Cambridge University Press:  26 May 2016

Lee Dae-Hee ,
Seon Kwang-Il  and
Min Kyoung-Wook
Lee Dae-Hee
Affiliation:
Korea Astronomy Observatory, 61-1 Hwaam-dong, Yusong-gu, Daejon 305-348, Korea
Seon Kwang-Il
Affiliation:
Korea Astronomy Observatory, 61-1 Hwaam-dong, Yusong-gu, Daejon 305-348, Korea
Min Kyoung-Wook
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373-1 Gusong-dong, Yusong-gu, Daejon 305-701, Korea

Abstract

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We observed the H2 absorption lines in the far-UV band toward HD 37903, which is the central star of the reflection nebula NGC 2023, and ran the radiative-collisional equilibrium program CLOUDY to simulate the UV radiation process of NGC 2023. The input parameters are chosen to generate the same ionization and excitation distribution of atoms and molecules as observed, so that we can create a physical model for NGC 2023.

Type
Part 2. Origin
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 204 - 205
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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