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초신성 잔해 HB3와 인접 분자운의 다파장 전파관측 KCI 등재

MULTI-FREQUENCY RADIO OBSERVATIONS OF MOLECULAR CLOUDS IN THE IMMEDIATE VICINITIES OF HB3

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  • URLhttps://db.koreascholar.com/Article/Detail/390276
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천문학논총 (Publications of the Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

The structure and environments of the molecular clouds near the SNR HB3(G132.7±1.3) HB3(G132.7±1.3) are studied. The molecular complex which is located at the southern rim of HB3 was proposed by former investigators as the one interacting with HB3. This complex region of 2∘×2∘atl=133∘ 2∘×2∘atl=133∘ has been observed at 12CO,13CO,J=1−0ata1′ 12CO,13CO,J=1−0ata1′ , resolution with the 14-m radio telescope at Taeduk Radio Astronomy Observatory. We have reached to the following four conclusions. The possibility that these molecular complex and HB3 are interacting with each other cannot be supported with any of our data. The morphologies of the two show no similarities. Neither particular features for the interaction are found in the CO lines. The hypothetical 'Molecular wall' which was expected to exist on the northwestern rim of HB3 as a cause for the noncircular morphology of HB3 is turned out to be nonexistent in CO. The molecular complex which resembles a 'bar' at a low resolution is now resolved into a U-shaped shell. It seems that the U-shape is consist of two independent components. No peculiarities, such as unseen masses or bright stars capable of forming HlI regions, are found within the U-shape region. The total mass included in the complex is estimated to be Mtotal=2.9\~8.4×105M⨀ Mtotal=2.9\~8.4×105M⨀ , which is in good agreement with previous observations within errors. Considering about 12 clumps distinguishable within the complex, the total mass implies that masses of each of clumps are on the order of 104M⨀ 104M⨀ , which makes these good objects for further studies in relation to star-formation. Especially the clumps associated with W3 are worthy for more high resolution observations for better understanding of astrophysical phenomenon ongoing in them.

저자
  • 김광태(충남대학교 천문우주과학과) | KIM KWANG-TAE (Department of Astronomy and Space Science, Chungnam National University)
  • 이창원(하버드 스미소니언 천체물리 센터) | LEE CHANG-WON (Harvard-Smithonian Center for Astrophysics)