Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29895
DC Field | Value | Language |
---|---|---|
dc.contributor.author | RIPEPI, Vincenzo | en_US |
dc.contributor.author | MOLINARO, Roberto | en_US |
dc.contributor.author | MUSELLA, ILARIA | en_US |
dc.contributor.author | MARCONI, Marcella | en_US |
dc.contributor.author | LECCIA, Silvio | en_US |
dc.contributor.author | Eyer, L. | en_US |
dc.date.accessioned | 2021-01-21T09:13:30Z | - |
dc.date.available | 2021-01-21T09:13:30Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29895 | - |
dc.description.abstract | Context. Classical Cepheids are the most important primary indicators for the extragalactic distance scale. Establishing the precise zero points of their period-luminosity and period-Wesenheit (PL/PW) relations has profound consequences on the estimate of H<SUB>0</SUB>. Type II Cepheids are also important distance indicators and tracers of old stellar populations. <BR /> Aims: The recent Data Release 2 (DR2) of the Gaia spacecraft includes photometry and parallaxes for thousands of classical and Type II Cepheids. We seek to review the classification of Gaia DR2 Cepheids and to derive precise PL/PW for the Magellanic Clouds (MCs) and Galactic Cepheids. <BR /> Methods: We adopted information from the literature and the Gaia astrometry and photometry to assign DR2 Galactic Cepheids to the classical, anomalous, and Type II Cepheids classes. <BR /> Results: We reclassified the DR2 Galactic Cepheids and derived new precise PL/PW relations in the Gaia passbands for the MCs and Milky Way Cepheids. We investigated for the first time the dependence on metallicity of the PW relation for classical Cepheids in the Gaia bands, finding inconclusive results. <BR /> Conclusions: According to our analysis, the zero point of the Gaia DR2 parallaxes as estimated from classical and Type II Cepheids seems likely to be underestimated by ∼0.07 mas, which agrees with recent literature. The next Gaia data releases are expected to fix this zero point offset to allow eventually a determination of H<SUB>0</SUB> to less than 1%. <P />Full Tables 2, 5, 7 and 8 are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr/">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/625/A14">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/625/A14</A> | en_US |
dc.language.iso | eng | en_US |
dc.title | Reclassification of Cepheids in the Gaia Data Release 2. Period-luminosity and period-Wesenheit relations in the Gaia passbands | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201834506 | en_US |
dc.identifier.scopus | 2-s2.0-85065234392 | en_US |
dc.identifier.isi | 000466316400007 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2019/05/aa34506-18/aa34506-18.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 625 | en_US |
dc.relation.firstpage | A14 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019A&A...625A..14R | 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.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.orcid | 0000-0003-1801-426X | - |
crisitem.author.orcid | 0000-0003-3055-6002 | - |
crisitem.author.orcid | 0000-0001-5909-6615 | - |
crisitem.author.orcid | 0000-0002-1330-2927 | - |
crisitem.author.orcid | 0000-0001-5685-6930 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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File | Description | Size | Format | |
---|---|---|---|---|
Reclassification2019.pdf | PDF editoriale | 3.22 MB | Adobe PDF | View/Open |
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