Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29206
DC Field | Value | Language |
---|---|---|
dc.contributor.author | LANZA, Antonino Francesco | en_US |
dc.contributor.author | Collier Cameron, A. | en_US |
dc.contributor.author | Haywood, R. D. | en_US |
dc.date.accessioned | 2020-12-28T12:04:10Z | - |
dc.date.available | 2020-12-28T12:04:10Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29206 | - |
dc.description.abstract | The radial velocity (RV) of the Sun as a star is affected by its surface convection and magnetic activity. The moments of the cross-correlation function between the solar spectrum and a binary line mask contain information about the stellar RV and line-profile distortions caused by stellar activity. As additional indicators, we consider the disc-averaged magnetic flux and the filling factor of the magnetic regions. Here we show that the activity-induced radial-velocity fluctuations are reduced when we apply a kernel regression to these activity indicators. The disc-averaged magnetic flux proves to be the best activity proxy over a time-scale of one month and gives a standard deviation of the regression residuals of 1.04 m/s, more than a factor of 2.8 smaller than the standard deviation of the original RV fluctuations. This result has been achieved thanks to the high-cadence and time continuity of the observations that simultaneously sample both the RV and the activity proxies. | en_US |
dc.language.iso | eng | en_US |
dc.title | Reducing activity-induced variations in a radial-velocity time series of the Sun as a star | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz1055 | en_US |
dc.identifier.scopus | 2-s2.0-85072273000 | en_US |
dc.identifier.isi | 000474903500037 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/486/3/3459/5454757 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 486 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 3459 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.486.3459L | 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_2 Planetary systems sciences | 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. Catania | - |
crisitem.author.orcid | 0000-0001-5928-7251 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
LanzaCameronHaywood19.pdf | pdf editoriale | 438.85 kB | Adobe PDF | View/Open |
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