THE TWO MOLECULAR CLOUDS IN RCW 38: EVIDENCE FOR THE FORMATION OF THE YOUNGEST SUPER STAR CLUSTER IN THE MILKY WAY TRIGGERED BY CLOUD–CLOUD COLLISION

@article{Fukui2015THETM,
  title={THE TWO MOLECULAR CLOUDS IN RCW 38: EVIDENCE FOR THE FORMATION OF THE YOUNGEST SUPER STAR CLUSTER IN THE MILKY WAY TRIGGERED BY CLOUD–CLOUD COLLISION},
  author={Yasuo Fukui and Kazufumi Torii and Akio Ohama and K Hasegawa and Yusuke Hattori and Hidetoshi Sano and Satoshi Ohashi and Kosuke Fujii and Sho Kuwahara and Norikazu Mizuno and Joanne R. Dawson and H. Yamamoto and Kengo Tachihara and Takeshi Okuda and Toshikazu Onishi and Akira Mizuno},
  journal={The Astrophysical Journal},
  year={2015},
  volume={820}
}
We present distributions of two molecular clouds having velocities of 2 and 14 km s−1 toward RCW 38, the youngest super star cluster in the Milky Way, in the 12CO J = 1–0 and 3–2 and 13CO J = 1–0 transitions. The two clouds are likely physically associated with the cluster as verified by the high intensity ratio of the J = 3–2 emission to the J = 1–0 emission, the bridging feature connecting the two clouds in velocity, and their morphological correspondence with the infrared dust emission. The… 

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References

SHOWING 1-10 OF 54 REFERENCES

Molecular Clouds Toward the Super Star Cluster NGC3603; Possible Evidence for a Cloud-Cloud Collision in Triggering the Cluster Formation

We present new large field observations of molecular clouds with NANTEN2 toward the super star cluster NGC 3603 in the transitions 12CO(J = 2–1, J = 1–0) and 13CO(J = 2–1, J = 1–0). We suggest that

Cloud-cloud collision as a trigger of the high-mass star formation; a molecular line study in RCW120

RCW 120 is a Galactic H ii region that has a beautiful ring shape that is bright in the infrared. Our new CO J = 1–0 and J = 3–2 observations performed with the NANTEN2, Mopra, and ASTE telescopes

MOLECULAR CLOUDS TOWARD RCW49 AND WESTERLUND 2: EVIDENCE FOR CLUSTER FORMATION TRIGGERED BY CLOUD–CLOUD COLLISION

We have made CO(J = 2–1) observations toward the H ii region RCW 49 and its ionizing source, the rich stellar cluster Westerlund 2, with the NANTEN2 submillimeter telescope. These observations have

Molecular Clouds in the Trifid Nebula M20: Possible Evidence for a Cloud-Cloud Collision in Triggering the Formation of the First Generation Stars

A large-scale study of the molecular clouds toward the Trifid Nebula, M20, has been made in the J = 2–1 and J = 1–0 transitions of 12CO and 13CO. M20 is ionized predominantly by an O7.5 star

EVIDENCE FOR CLOUD–CLOUD COLLISION AND PARSEC-SCALE STELLAR FEEDBACK WITHIN THE L1641-N REGION

We present high spatial resolution 12CO (J = 1–0) images taken by the Nobeyama 45 m telescope toward a 48′ × 48′ area, including the L1641-N cluster. The effective spatial resolution of the maps is

Molecular Clouds and Star Formation in the Southern H II Regions

We have carried out extensive 1 CO(J — 1-0) observations toward 23 southern Hll regions associated with bright-rimmed clouds. In total, 95 molecular clouds have been identified to be associated with

HIGH-MASS STAR FORMATION TRIGGERED BY COLLISION BETWEEN CO FILAMENTS IN N159 WEST IN THE LARGE MAGELLANIC CLOUD

We have carried out 13CO(J = 2–1) observations of the active star-forming region N159 west in the Large Magellanic Cloud with ALMA. We have found that the CO distribution at a sub-parsec scale is

First Results of a CO Survey of the Large Magellanic Cloud with NANTEN; Giant Molecular Clouds as Formation Sites of Populous Clusters

A new survey of the LMC has been completed in 2.6 mm carbon monoxide emission with NANTEN. This survey has revealed 107 giant molecular clouds, the first complete sample of giant molecular clouds in

Isolating signatures of major cloud–cloud collisions using position–velocity diagrams

Collisions between giant molecular clouds are a potential mechanism for triggering the formation of massive stars, or even super star clusters. The trouble is identifying this process observationally

TEMPERATURE AND DENSITY DISTRIBUTION IN THE MOLECULAR GAS TOWARD WESTERLUND 2: FURTHER EVIDENCE FOR PHYSICAL ASSOCIATION

Furukawa et al. reported the existence of a large mass of molecular gas associated with the super star cluster Westerlund 2 and the surrounding H ii region RCW49, based on a strong morphological
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