천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제41권2호
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- Pages.54.1-54.1
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- 2016
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- 1226-2692(pISSN)
Looking for Direct Evidence of Triggered Star Formation: Gas Kinematics
- Lim, Beomdu (Korea Astronomy & Space Science Institute) ;
- Sung, Hwankyung (Sejong University) ;
- Lee, Jae Joon (Korea Astronomy & Space Science Institute) ;
- Oh, Heeyoung (Korea Astronomy & Space Science Institute) ;
- Kim, Hwihyun (Korea Astronomy & Space Science Institute) ;
- Hwang, Narae (Korea Astronomy & Space Science Institute) ;
- Park, Byeong-Gon (Korea Astronomy & Space Science Institute)
- 발행 : 2016.10.12
초록
Stellar wind and radiation pressure from massive stars can trigger the formation of new generation of stars. The sequential age distribution of stars, the morphology of cometary globules, and bright-rimmed clouds have been accepted as evidence of triggered star formation. However, these characteristics do not necessarily suggest that new generation of stars are formed by the feedback of massive stars. In order to search for any physical connection between star forming events, we have initiated a study of gas and stellar kinematics in NGC 1893, where two prominent cometary nebulae are facing toward O-type stars. The spectra of gas and stars in optical and near-infrared (NIR) wavelength are obtained with Hectochelle on the 6.5m MMT and Immersion GRating INfrared Spectrograph on the 2.7m Harlan J. Smith Telescope at McDonald observatory. In this study, the radial velocity field of gas across the cluster is investigated using
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