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Synthetic stellar photometry - II. Testing the bolometric flux scale and tables of bolometric corrections for the Hipparcos/Tycho, Pan-STARRS1, SkyMapper, and JWST systems

Casagrande, Luca; VandenBerg, Don A.

Description

We useMARCSmodel atmosphere fluxes to compute synthetic colours, bolometric corrections and reddening coefficients for the Hipparcos/Tycho, Pan-STARRS1, SkyMapper, and JWST systems. Tables and interpolation subroutines are provided to transform isochrones from the theoretical to various observational planes, to derive bolometric corrections, synthetic colours and colour-temperature relations at nearly any given point of the HR diagram for 2600K ≤ Teff ≤ 8000 K, and different values of reddening...[Show more]

dc.contributor.authorCasagrande, Luca
dc.contributor.authorVandenBerg, Don A.
dc.date.accessioned2021-04-20T23:41:29Z
dc.date.available2021-04-20T23:41:29Z
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/1885/230424
dc.description.abstractWe useMARCSmodel atmosphere fluxes to compute synthetic colours, bolometric corrections and reddening coefficients for the Hipparcos/Tycho, Pan-STARRS1, SkyMapper, and JWST systems. Tables and interpolation subroutines are provided to transform isochrones from the theoretical to various observational planes, to derive bolometric corrections, synthetic colours and colour-temperature relations at nearly any given point of the HR diagram for 2600K ≤ Teff ≤ 8000 K, and different values of reddening in 85 photometric filters. We use absolute spectrophotometry from the CALSPEC library to show that bolometric fluxes can be recovered to ~2 per cent from bolometric corrections in a single band, when input stellar parameters are well known for FG dwarfs at various metallicities. This sole source of uncertainty impacts interferometric Teff to ≃0.5 per cent (or 30 K at the solar temperature). Uncertainties are halved when combining bolometric corrections in more bands, and limited by the fundamental uncertainty of the current absolute flux scale at 1 per cent. Stars in the RAVE DR5 catalogue are used to validate the quality of our MARCS synthetic photometry in selected filters across the optical and infrared range. This investigation shows that extant MARCSsynthetic fluxes are able to reproduce the main features observed in stellar populations across the Galactic disc.
dc.description.sponsorshipLC gratefully acknowledges support from the Australian Research Council (grants DP150100250, FT160100402), while the contributions of DAV to this project were supported by a Discovery Grant from the Natural Sciences and Engineering Research Council of Canada. The national facility capability for SkyMapper has been funded through ARC LIEF grant LE130100104 from the Australian Research Council, awarded to the University of Sydney, the Australian National University, Swinburne University of Technology, the University of Queensland, the University of Western Australia, the University of Melbourne, Curtin University of Technology, Monash University and the Australian Astronomical Observatory. Development and support the SkyMapper node of the ASVO has been funded in part by Astronomy Australia Limited (AAL) and the Australian Government through the Commonwealth’s Education Investment Fund (EIF) and National Collaborative Research Infrastructure Strategy (NCRIS), particularly the National eResearch Collaboration Tools and Resources (NeCTAR) and the Australian National Data Service Projects (ANDS). This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. Funding for RAVE (www.rave-survey.org) has been provided by institutions of the RAVE participants and by their national funding agencies. Parts of this research were conducted by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherBlackwell Publishing Ltd
dc.rights© 2018 The Author(s)
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjecttechniques: photometric
dc.subjectstars: atmospheres
dc.subjectstars: fundamental parameters
dc.subjectHertzsprung–Russell and colour–magnitude diagrams
dc.subjectglobular clusters: general
dc.titleSynthetic stellar photometry - II. Testing the bolometric flux scale and tables of bolometric corrections for the Hipparcos/Tycho, Pan-STARRS1, SkyMapper, and JWST systems
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume475
dcterms.dateAccepted2018-01-15
dc.date.issued2018
local.identifier.absfor020104 - Galactic Astronomy
local.identifier.ariespublicationa383154xPUB9787
local.publisher.urlhttps://academic.oup.com/
local.type.statusPublished Version
local.contributor.affiliationCasagrande, Luca, College of Science, ANU
local.contributor.affiliationVandenBerg, Don A., University of Victoria
dc.relationhttp://purl.org/au-research/grants/arc/DP150100250
dc.relationhttp://purl.org/au-research/grants/arc/FT160100402
dc.relationhttp://purl.org/au-research/grants/arc/LE130100104
dc.relationhttp://purl.org/au-research/grants/arc/CE170100013
local.bibliographicCitation.issue4
local.bibliographicCitation.startpage5023
local.bibliographicCitation.lastpage5040
local.identifier.doi10.1093/mnras/sty149
dc.date.updated2020-11-23T11:55:41Z
local.identifier.scopusID2-s2.0-85045900254
dcterms.accessRightsOpen Access
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/24618..."Published version can be made open access on institutional repository" from SHERPA/RoMEO site (as at 21.4.2021).
CollectionsANU Research Publications

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