Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31124
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Baumgardt, H. | en_US |
dc.contributor.author | SOLLIMA, ANTONIO LUIGI | en_US |
dc.contributor.author | Hilker, M. | en_US |
dc.date.accessioned | 2021-11-23T11:33:09Z | - |
dc.date.available | 2021-11-23T11:33:09Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 1448-6083 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31124 | - |
dc.description.abstract | We have used HST and ground-based photometry to determine total $V$-band magnitudes and mass-to-light ratios of more than 150 Galactic globular clusters. We do this by summing up the magnitudes of their individual member stars, using color-magnitude information, Gaia DR2 proper motions and radial velocities to distinguish cluster stars from background stars. Our new magnitudes confirm literature estimates for bright clusters with V<8, but can deviate by up to two magnitudes from literature values for fainter clusters. They lead to absolute mass-to-light ratios that are confined to the narrow range 1.4<M/L_V<2.5, significantly smaller than what was found before. We also find a correlation between a cluster's M/L_V value and its age, in agreement with theoretical predictions. The M/L_V ratios of globular clusters are also in good agreement with those predicted by stellar isochrones, arguing against a significant amount of dark matter inside globular clusters. We finally find that, in agreement with what has been seen in M31, the magnitude distribution of outer halo globular clusters has a tail towards faint clusters that is absent in the inner parts of the Milky Way. | en_US |
dc.language.iso | eng | en_US |
dc.title | Absolute V-band magnitudes and mass-to-light ratios of Galactic globular clusters | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1017/pasa.2020.38 | en_US |
dc.identifier.scopus | 2-s2.0-85096179966 | en_US |
dc.identifier.isi | WOS:000584499100001 | en_US |
dc.identifier.url | https://www.cambridge.org/core/journals/publications-of-the-astronomical-society-of-australia/article/absolute-vband-magnitudes-and-masstolight-ratios-of-galactic-globular-clusters/27BC309E353A59CCC879EE7A840FF212 | en_US |
dc.identifier.url | http://arxiv.org/abs/2009.09611v1 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 37 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 3 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | AUS | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020PASA...37...46B | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
crisitem.journal.journalissn | 1448-6083 | - |
crisitem.journal.ance | E211088 | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0001-7484-8467 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2009.09611.pdf | preprint | 2.65 MB | Adobe PDF | View/Open |
PASA.pdf | [Administrators only] | 2.83 MB | Adobe PDF |
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