Takemura, Hideaki ORCID: 0000-0003-2902-2038, Nakamura, Fumitaka, Kong, Shuo ORCID: 0000-0002-8469-2029, Arce, Hector G., Carpenter, John M., Ossenkopf-Okada, Volker ORCID: 0000-0002-8351-3877, Klessen, Ralf, Sanhueza, Patricio, Shimajiri, Yoshito, Tsukagoshi, Takashi ORCID: 0000-0002-6034-2892, Kawabe, Ryohei, Ishii, Shun, Dobashi, Kazuhito, Shimoikura, Tomomi, Goldsmith, Paul F., Sanchez-Monge, Alvaro, Kauffmann, Jens ORCID: 0000-0002-5094-6393, Pillai, Thushara G. S., Padoan, Paolo ORCID: 0000-0002-5055-5800, Ginsberg, Adam, Smith, Rowan J., Bally, John, Mairs, Steve ORCID: 0000-0002-6956-0730, Pineda, Jaime E., Lis, Dariusz C., Burkhart, Blakesley ORCID: 0000-0001-5817-5944, Schilke, Peter, Chen, Hope How-Huan, Isella, Andrea, Friesen, Rachel K., Goodman, Alyssa A. and Harper, Doyal A. (2021). The Core Mass Function in the Orion Nebula Cluster Region: What Determines the Final Stellar Masses? Astrophys. J. Lett., 910 (1). BRISTOL: IOP PUBLISHING LTD. ISSN 2041-8213

Full text not available from this repository.

Abstract

Applying dendrogram analysis to the CARMA-NRO (CO)-O-18 (J = 1-0) data having an angular resolution of similar to 8 '', we identified 692 dense cores in the Orion Nebula Cluster region. Using this core sample, we compare the core and initial stellar mass functions in the same area to quantify the step from cores to stars. About 22% of the identified cores are gravitationally bound. The derived core mass function (CMF) for starless cores has a slope similar to Salpeter's stellar initial mass function (IMF) for the mass range above 1 M, consistent with previous studies. Our CMF has a peak at a subsolar mass of similar to 0.1 M, which is comparable to the peak mass of the IMF derived in the same area. We also find that the current star formation rate is consistent with the picture in which stars are born only from self-gravitating starless cores. However, the cores must gain additional gas from the surroundings to reproduce the current IMF (e.g., its slope and peak mass), because the core mass cannot be accreted onto the star with 100% efficiency. Thus, the mass accretion from the surroundings may play a crucial role in determining the final stellar masses of stars.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Takemura, HideakiUNSPECIFIEDorcid.org/0000-0003-2902-2038UNSPECIFIED
Nakamura, FumitakaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kong, ShuoUNSPECIFIEDorcid.org/0000-0002-8469-2029UNSPECIFIED
Arce, Hector G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carpenter, John M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ossenkopf-Okada, VolkerUNSPECIFIEDorcid.org/0000-0002-8351-3877UNSPECIFIED
Klessen, RalfUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanhueza, PatricioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimajiri, YoshitoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tsukagoshi, TakashiUNSPECIFIEDorcid.org/0000-0002-6034-2892UNSPECIFIED
Kawabe, RyoheiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ishii, ShunUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dobashi, KazuhitoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimoikura, TomomiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goldsmith, Paul F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchez-Monge, AlvaroUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kauffmann, JensUNSPECIFIEDorcid.org/0000-0002-5094-6393UNSPECIFIED
Pillai, Thushara G. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Padoan, PaoloUNSPECIFIEDorcid.org/0000-0002-5055-5800UNSPECIFIED
Ginsberg, AdamUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smith, Rowan J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bally, JohnUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mairs, SteveUNSPECIFIEDorcid.org/0000-0002-6956-0730UNSPECIFIED
Pineda, Jaime E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lis, Dariusz C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burkhart, BlakesleyUNSPECIFIEDorcid.org/0000-0001-5817-5944UNSPECIFIED
Schilke, PeterUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chen, Hope How-HuanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isella, AndreaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Friesen, Rachel K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goodman, Alyssa A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Harper, Doyal A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-606988
DOI: 10.3847/2041-8213/abe7dd
Journal or Publication Title: Astrophys. J. Lett.
Volume: 910
Number: 1
Date: 2021
Publisher: IOP PUBLISHING LTD
Place of Publication: BRISTOL
ISSN: 2041-8213
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
OPHIUCHI MAIN CLOUD; STAR-FORMATION; MOLECULAR CLOUDS; PROTOSTELLAR ACCRETION; INITIAL CONDITIONS; OUTFLOW FEEDBACK; DENSE CORES; II.; FRAGMENTATION; LUMINOSITYMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60698

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item