Planck Cold Clumps in the λ Orionis Complex. I : Discovery of an Extremely Young Class 0 Protostellar Object and a Proto-brown Dwarf Candidate in the Bright-rimmed Clump PGCC G192.32-11.88
dc.contributor.author | Liu, T. | |
dc.contributor.author | Zhang, Q. | |
dc.contributor.author | Kim, K.-T. | |
dc.contributor.author | Wu, Y. | |
dc.contributor.author | Lee, C.W. | |
dc.contributor.author | Lee, J.-E. | |
dc.contributor.author | Tatematsu, K. | |
dc.contributor.author | Choi, M. | |
dc.contributor.author | Juvela, M. | |
dc.contributor.author | Thompson, M.A. | |
dc.contributor.author | Goldsmith, P.F. | |
dc.contributor.author | Liu, S.Y. | |
dc.contributor.author | Naomi, H. | |
dc.contributor.author | Koch, P. | |
dc.contributor.author | Henkel, C. | |
dc.contributor.author | Sanhueza, P. | |
dc.contributor.author | He, J. | |
dc.contributor.author | Rivera-Ingraham, A. | |
dc.contributor.author | Wang, K. | |
dc.contributor.author | Cunningham, M.R. | |
dc.contributor.author | Tang, Y.-W. | |
dc.contributor.author | Lai, S.-P. | |
dc.contributor.author | Yuan, J. | |
dc.contributor.author | Li, D. | |
dc.contributor.author | Fuller, G. | |
dc.contributor.author | Kang, M. | |
dc.contributor.author | Nguyen Luong, Q. | |
dc.contributor.author | Liu, H.B. | |
dc.contributor.author | Ristorcelli, I. | |
dc.contributor.author | Yang, J. | |
dc.contributor.author | Xu, Y. | |
dc.contributor.author | Hirota, T. | |
dc.contributor.author | Mardones, D. | |
dc.contributor.author | Qin, S.-L. | |
dc.contributor.author | Chen, H.-R. | |
dc.contributor.author | Kwon, W. | |
dc.contributor.author | Meng, F. | |
dc.contributor.author | Zhang, H. | |
dc.contributor.author | Kim, M.-R. | |
dc.contributor.author | Yi, H.-W. | |
dc.date.accessioned | 2016-03-16T10:15:12Z | |
dc.date.available | 2016-03-16T10:15:12Z | |
dc.date.issued | 2016-01-14 | |
dc.identifier.citation | Liu , T , Zhang , Q , Kim , K-T , Wu , Y , Lee , C W , Lee , J-E , Tatematsu , K , Choi , M , Juvela , M , Thompson , M A , Goldsmith , P F , Liu , S Y , Naomi , H , Koch , P , Henkel , C , Sanhueza , P , He , J , Rivera-Ingraham , A , Wang , K , Cunningham , M R , Tang , Y-W , Lai , S-P , Yuan , J , Li , D , Fuller , G , Kang , M , Nguyen Luong , Q , Liu , H B , Ristorcelli , I , Yang , J , Xu , Y , Hirota , T , Mardones , D , Qin , S-L , Chen , H-R , Kwon , W , Meng , F , Zhang , H , Kim , M-R & Yi , H-W 2016 , ' Planck Cold Clumps in the λ Orionis Complex. I : Discovery of an Extremely Young Class 0 Protostellar Object and a Proto-brown Dwarf Candidate in the Bright-rimmed Clump PGCC G192.32-11.88 ' , Astrophysical Journal, Supplement Series , vol. 222 , no. 1 , 7 . https://doi.org/10.3847/0067-0049/222/1/7 | |
dc.identifier.issn | 0067-0049 | |
dc.identifier.other | PURE: 9784458 | |
dc.identifier.other | PURE UUID: 761a7b95-ae1e-4b6c-946b-616b4dffe5c9 | |
dc.identifier.other | Bibtex: urn:e7d9250d28e2836df5b69b17cf127ede | |
dc.identifier.other | Scopus: 84950310786 | |
dc.identifier.other | ORCID: /0000-0001-5392-909X/work/30970775 | |
dc.identifier.uri | http://hdl.handle.net/2299/16805 | |
dc.description.abstract | We are performing a series of observations with ground-based telescopes toward Planck Galactic cold clumps (PGCCs) in the λ Orionis complex in order to systematically investigate the effects of stellar feedback. In the particular case of PGCC G192.32-11.88, we discovered an extremely young Class 0 protostellar object (G192N) and a proto-brown dwarf candidate (G192S). G192N and G192S are located in a gravitationally bound bright-rimmed clump. The velocity and temperature gradients seen in line emission of CO isotopologues indicate that PGCC G192.32-11.88 is externally heated and compressed. G192N probably has the lowest bolometric luminosity (˜0.8 {L}⊙ ) and accretion rate (6.3 × 10-7 {M}⊙ yr-1) when compared with other young Class 0 sources (e.g., PACS Bright Red Sources) in the Orion complex. It has slightly larger internal luminosity (0.21 ± 0.01 {L}⊙ ) and outflow velocity (˜14 km s-1) than the predictions of first hydrostatic cores (FHSCs). G192N might be among the youngest Class 0 sources, which are slightly more evolved than an FHSC. Considering its low internal luminosity (0.08 ± 0.01 {L}⊙ ) and accretion rate (2.8 × 10-8 {M}⊙ yr-1), G192S is an ideal proto-brown dwarf candidate. The star formation efficiency (˜0.3%-0.4%) and core formation efficiency (˜1%) in PGCC G192.32-11.88 are significantly smaller than in other giant molecular clouds or filaments, indicating that the star formation therein is greatly suppressed owing to stellar feedback. | en |
dc.format.extent | 28 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysical Journal, Supplement Series | |
dc.subject | ISM: jets and outflows, ISM: kinematics and dynamics, stars: formation | |
dc.title | Planck Cold Clumps in the λ Orionis Complex. I : Discovery of an Extremely Young Class 0 Protostellar Object and a Proto-brown Dwarf Candidate in the Bright-rimmed Clump PGCC G192.32-11.88 | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.description.status | Peer reviewed | |
rioxxterms.version | AM | |
rioxxterms.versionofrecord | https://doi.org/10.3847/0067-0049/222/1/7 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true |