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High resolution spectroscopic study of the Halo PNe: the case of H 4–1

Published online by Cambridge University Press:  15 December 2006

Masaaki Otsuka ,
Akito Tajitsu  and
Shin'ichi Tamura
Masaaki Otsuka
Affiliation:
Okayama Astrophysical Observatory, NAOJ, Kamogata, Okayama 719-0232, Japan
Akito Tajitsu
Affiliation:
Subaru Telescope, NAOJ, 650 North A'ohoku Place, Hilo, Hawaii 96720, U.S.A.
Shin'ichi Tamura
Affiliation:
Department of Astronomy, Tohoku University, Aramaki Aza Aoba, Sendai, 980-8578, Japan
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Abstract

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We present the latest observational results on the halo PN, H 4–1 (PN G049.3+88.1). The H$_{2}$ 1–0 S(1) 2.122 $\mu$m emission image of H 4–1 showed the existence of an equatorial disk with two outer arcs in this object. In order to reveal the internal kinematics making this complex structure, we performed spatial and spectral high-resolution spectroscopy with the HDS (High Dispersion Spectrograph) of the Subaru 8.2m telescope. The HDS observational results showed the presence of a high-velocity ($\ge$ 40 km s$^{-1}$) collimated outflow.

Keywords

ISM: planetary nebulae: individual (H 4–1)ISM: evolutionstars: Population II
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 235 - 238
Copyright
© 2006 International Astronomical Union