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Numerical Simulation and Completeness Survey of Bubbles in the Taurus and Perseus Molecular Clouds
Liu,Mengting1,2; Li,Di1,2,3; Kr?o,Marko1; Ho,Luis C.4,5; Xu,Duo6; Li,Huixian1
2019-11-07
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume885Issue:2
AbstractAbstract Previous studies have analyzed the energy injection into the interstellar matter due to molecular bubbles. They found that the total kinetic energies of bubbles are comparable to, or even larger than, those of outflows but still less than the gravitational potential and turbulence energies of the hosting clouds. We examined the possibility that previous studies underestimated the energy injection due to being unable to detect dim or incomplete bubbles. We simulated typical molecular bubbles and inserted them into the 13CO Five College Radio Astronomical Observatory maps of the Taurus and Perseus Molecular Clouds. We determined bubble identification completeness by applying the same procedures to both simulated and real data sets. We proposed a detectability function for both the Taurus and Perseus molecular clouds based on a multivariate approach. In Taurus, bubbles with kinetic energy less than ~1?×?1044 erg are likely to be missed. We found that the total missing kinetic energy in Taurus is less than a couple of 1044 erg, which only accounts for around 0.2% of the total kinetic energy of identified bubbles. In Perseus, bubbles with kinetic energy less than ~2?×?1044 erg are likely to be missed. We found that the total missing kinetic energy in Perseus is less than 1045 erg, which only accounts for around 1% of the total kinetic energy of identified bubbles. We thus conclude that previous manual bubble identification routines used in Taurus and Perseus can be considered to be energetically complete. Therefore, we confirm that energy injection from dynamic structures, namely outflows and bubbles, produced by star formation feedback are sufficient to sustain turbulence at a spatial scale from ~0.1 to ~2.8 pc.
KeywordISM: bubbles ISM: jets and outflows ISM: kinematics and dynamics
DOI10.3847/1538-4357/ab4880
Language英语
WOS IDIOP:0004-637X-885-2-ab4880
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28620
Collection中国科学院国家天文台
Affiliation1.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China liumengting@nao.cas.cn
2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; dili@nao.cas.cn
3.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa
4.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People’s Republic of China
5.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People’s Republic of China
6.Department of Astronomy, The University of Texas at Austin, Austin, TX 78712, USA
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu,Mengting,Li,Di,Kr?o,Marko,et al. Numerical Simulation and Completeness Survey of Bubbles in the Taurus and Perseus Molecular Clouds[J]. The Astrophysical Journal,2019,885(2).
APA Liu,Mengting,Li,Di,Kr?o,Marko,Ho,Luis C.,Xu,Duo,&Li,Huixian.(2019).Numerical Simulation and Completeness Survey of Bubbles in the Taurus and Perseus Molecular Clouds.The Astrophysical Journal,885(2).
MLA Liu,Mengting,et al."Numerical Simulation and Completeness Survey of Bubbles in the Taurus and Perseus Molecular Clouds".The Astrophysical Journal 885.2(2019).
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