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dc.contributor.authorBisigello, L.
dc.contributor.authorCaputi, K. I.
dc.contributor.authorColina, L.
dc.contributor.authorFèvre, O. Le
dc.contributor.authorNørgaard-Nielsen, H. U.
dc.contributor.authorPérez-González, P. G.
dc.contributor.authorWerf, P. van der
dc.contributor.authorIlbert, O.
dc.contributor.authorGrogin, Norman A.
dc.contributor.authorKoekemoer, A.
dc.date.accessioned2017-07-27T16:36:24Z
dc.date.available2017-07-27T16:36:24Z
dc.date.issued2017-07-07
dc.identifier.citationRecovering the Properties of High-redshift Galaxies with Different JWST Broadband Filters 2017, 231 (1):3 The Astrophysical Journal Supplement Seriesen
dc.identifier.issn1538-4365
dc.identifier.doi10.3847/1538-4365/aa7a14
dc.identifier.urihttp://hdl.handle.net/10150/624902
dc.description.abstractImaging with the James Webb Space Telescope (JWST) will allow observations of the bulk of distant galaxies at the epoch of reionization. The recovery of their properties, such as age, color excess E(B-V), specific star formation rate (sSFR), and stellar mass, will mostly rely on spectral energy distribution fitting, based on the data provided by JWST's two imager cameras, namely the Near Infrared Camera (NIRCam) and the Mid Infrared Imager (MIRI). In this work we analyze the effect of choosing different combinations of NIRCam and MIRI broadband filters, from 0.6 to 7.7 mu m, on the recovery of these galaxy properties. We performed our tests on a sample of 1542 simulated galaxies, with known input properties, at z = 7-10. We found that, with only eight NIRCam broadbands, we can recover the galaxy age within 0.1 Gyr and the color excess within 0.06 mag for 70% of the galaxies. Additionally, the stellar masses and sSFR are recovered within 0.2 and 0.3 dex, respectively, at z = 7-9. Instead, at z = 10, no NIRCam band traces purely the lambda > 4000 angstrom regime and the percentage of outliers in stellar mass (sSFR) increases by > 20% (> 90%), in comparison to z = 9. The MIRI F560W and F770W bands are crucial to improve the stellar mass and the sSFR estimation at z = 10. When nebular emission lines are present, deriving correct galaxy properties is challenging at any redshift and with any band combination. In particular, the stellar mass is systematically overestimated in up to 0.3 dex on average with NIRCam data alone and including MIRI observations only marginally improves the estimation.
dc.description.sponsorshipNederlandse Onderzoekschool voor de Astronomie (NOVA); European Research Council through the award of the Consolidator Grant [681627-BUILDUP]; European Research Council [268107-EARLY]; Spanish Government MINECO [AYA2012-31277, AYA2015-70815-ERC, AAYA2012-32295]en
dc.language.isoenen
dc.publisherIOP PUBLISHING LTDen
dc.relation.urlhttp://stacks.iop.org/0067-0049/231/i=1/a=3?key=crossref.18bfe6057fa2463d7f54a369752f41dben
dc.rights© 2017. The American Astronomical Society. All rights reserved.en
dc.subjectgalaxies: high-redshiften
dc.subjectgalaxies: photometryen
dc.subjectgalaxies: fundamental parametersen
dc.titleRecovering the Properties of High-redshift Galaxies with Different JWST Broadband Filtersen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Steward Observen
dc.identifier.journalThe Astrophysical Journal Supplement Seriesen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-06-15T12:10:47Z
html.description.abstractImaging with the James Webb Space Telescope (JWST) will allow observations of the bulk of distant galaxies at the epoch of reionization. The recovery of their properties, such as age, color excess E(B-V), specific star formation rate (sSFR), and stellar mass, will mostly rely on spectral energy distribution fitting, based on the data provided by JWST's two imager cameras, namely the Near Infrared Camera (NIRCam) and the Mid Infrared Imager (MIRI). In this work we analyze the effect of choosing different combinations of NIRCam and MIRI broadband filters, from 0.6 to 7.7 mu m, on the recovery of these galaxy properties. We performed our tests on a sample of 1542 simulated galaxies, with known input properties, at z = 7-10. We found that, with only eight NIRCam broadbands, we can recover the galaxy age within 0.1 Gyr and the color excess within 0.06 mag for 70% of the galaxies. Additionally, the stellar masses and sSFR are recovered within 0.2 and 0.3 dex, respectively, at z = 7-9. Instead, at z = 10, no NIRCam band traces purely the lambda > 4000 angstrom regime and the percentage of outliers in stellar mass (sSFR) increases by > 20% (> 90%), in comparison to z = 9. The MIRI F560W and F770W bands are crucial to improve the stellar mass and the sSFR estimation at z = 10. When nebular emission lines are present, deriving correct galaxy properties is challenging at any redshift and with any band combination. In particular, the stellar mass is systematically overestimated in up to 0.3 dex on average with NIRCam data alone and including MIRI observations only marginally improves the estimation.


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