Big fish in small ponds: Massive stars in the low-mass clusters of M83
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Andrews, J E; Calzetti, Daniela; Chandar, Rupali; Elmegreen, B. G.; Kennicutt, Robert C; Kim, Hwihyun; Krumholz, Mark; Lee, J C; McElwee, S.; O'Connell, Robert W; Whitmore, Bradley
Description
We have used multi-wavelength Hubble Space Telescope WFC3 data of the starbursting spiral galaxy M83 in order to measure variations in the upper end of the stellar initial mass function (uIMF) using the production rate of ionizing photons in unresolved clusters with ages ≤ 8 Myr. As in earlier papers on M51 and NGC 4214, the uIMF in M83 is consistent with a universal IMF, and stochastic sampling of the stellar populations in the 103M clusters are responsible for any deviations in this...[Show more]
dc.contributor.author | Andrews, J E | |
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dc.contributor.author | Calzetti, Daniela | |
dc.contributor.author | Chandar, Rupali | |
dc.contributor.author | Elmegreen, B. G. | |
dc.contributor.author | Kennicutt, Robert C | |
dc.contributor.author | Kim, Hwihyun | |
dc.contributor.author | Krumholz, Mark | |
dc.contributor.author | Lee, J C | |
dc.contributor.author | McElwee, S. | |
dc.contributor.author | O'Connell, Robert W | |
dc.contributor.author | Whitmore, Bradley | |
dc.date.accessioned | 2018-11-29T22:52:11Z | |
dc.date.available | 2018-11-29T22:52:11Z | |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/1885/152106 | |
dc.description.abstract | We have used multi-wavelength Hubble Space Telescope WFC3 data of the starbursting spiral galaxy M83 in order to measure variations in the upper end of the stellar initial mass function (uIMF) using the production rate of ionizing photons in unresolved clusters with ages ≤ 8 Myr. As in earlier papers on M51 and NGC 4214, the uIMF in M83 is consistent with a universal IMF, and stochastic sampling of the stellar populations in the 103M clusters are responsible for any deviations in this universality. The ensemble cluster population, as well as individual clusters, also imply that the most massive star in a cluster does not depend on the cluster mass. In fact, we have found that these small clusters seem to have an over-abundance of ionizing photons when compared to an expected universal or truncated IMF. This also suggests that the presence of massive stars in these clusters does not affect the star formation in a destructive way. | |
dc.format.mimetype | application/pdf | |
dc.publisher | IOP Publishing | |
dc.source | The Astrophysical Journal | |
dc.subject | Keywords: galaxies: individual (M83); galaxies: star clusters: general; galaxies: star formation; stars: luminosity function, mass function; stars: massive | |
dc.title | Big fish in small ponds: Massive stars in the low-mass clusters of M83 | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 793 | |
dc.date.issued | 2014 | |
local.identifier.absfor | 020103 - Cosmology and Extragalactic Astronomy | |
local.identifier.absfor | 020104 - Galactic Astronomy | |
local.identifier.absfor | 020199 - Astronomical and Space Sciences not elsewhere classified | |
local.identifier.ariespublication | a383154xPUB3400 | |
local.type.status | Published Version | |
local.contributor.affiliation | Andrews, J E, University of Massachusetts | |
local.contributor.affiliation | Calzetti, Daniela, University of Massachusetts | |
local.contributor.affiliation | Chandar, Rupali, The University of Toledo | |
local.contributor.affiliation | Elmegreen, B. G., IBM | |
local.contributor.affiliation | Kennicutt, Robert C , University of Cambridge | |
local.contributor.affiliation | Kim, Hwihyun, Arizona State University | |
local.contributor.affiliation | Krumholz, Mark, College of Science, ANU | |
local.contributor.affiliation | Lee, J C, Spitzer Science Center | |
local.contributor.affiliation | McElwee, S., University of Massachusetts | |
local.contributor.affiliation | O'Connell, Robert W, University of Virginia | |
local.contributor.affiliation | Whitmore, Bradley, Space Telescope Science Institute | |
local.bibliographicCitation.issue | 1 | |
local.identifier.doi | 10.1088/0004-637X/793/1/4 | |
dc.date.updated | 2018-11-29T07:44:24Z | |
local.identifier.scopusID | 2-s2.0-84906959163 | |
local.identifier.thomsonID | 000341301700004 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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