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dc.contributor.authorFong, W.F.
dc.contributor.authorDong, Y.
dc.contributor.authorLeja, J.
dc.contributor.authorBhandari, S.
dc.contributor.authorDay, C.K.
dc.contributor.authorDeller, A.T.
dc.contributor.authorKumar, P.
dc.contributor.authorProchaska, J.X.
dc.contributor.authorScott, D.R.
dc.contributor.authorBannister, K.W.
dc.contributor.authorEftekhari, T.
dc.contributor.authorGordon, A.C.
dc.contributor.authorHeintz, K.E.
dc.contributor.authorJames, Clancy
dc.contributor.authorKilpatrick, C.D.
dc.contributor.authorMahony, E.K.
dc.contributor.authorRouco Escorial, A.
dc.contributor.authorRyder, S.D.
dc.contributor.authorShannon, Ryan
dc.contributor.authorTejos, N.
dc.date.accessioned2023-04-19T05:43:00Z
dc.date.available2023-04-19T05:43:00Z
dc.date.issued2021
dc.identifier.citationFong, W.F. and Dong, Y. and Leja, J. and Bhandari, S. and Day, C.K. and Deller, A.T. and Kumar, P. et al. 2021. Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A. Astrophysical Journal Letters. 919 (2): ARTN L23.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/91552
dc.identifier.doi10.3847/2041-8213/ac242b
dc.description.abstract

We present the Australian Square Kilometre Array Pathfinder localization and follow-up observations of the host galaxy of the repeating fast radio burst (FRB) source, FRB 20201124A, the fifth such extragalactic repeating FRB with an identified host. From spectroscopic observations using the 6.5 m MMT Observatory, we derive a redshift z = 0.0979 ± 0.0001, a star formation rate inferred from Hα emission SFR(Hα) ≈ 2.1 M⊙ yr-1, and a gas-phase metallicity of 12+log(O/H) ≈ 9.0. By jointly modeling the 12 filter optical-mid-infrared (MIR) photometry and spectroscopy of the host, we infer a median stellar mass of ∼2 × 1010 M⊙, internal dust extinction AV ≈ 1-1.5 mag, and a mass-weighted stellar population age of ∼5-6 Gyr. Connecting these data to the radio and X-ray observations, we cannot reconcile the broadband behavior with strong active galactic nucleus activity and instead attribute the dominant source of persistent radio emission to star formation, likely originating from the circumnuclear region of the host. The modeling also indicates a hot dust component contributing to the MIR luminosity at a level of ∼10%-30%. We model the host galaxy's star formation and mass assembly histories, finding that the host assembled >90% of its mass by 1 Gyr ago and exhibited a fairly constant SFR for most of its existence, with no clear evidence of past starburst activity.

dc.languageEnglish
dc.publisherIOP Publishing Ltd
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/FT190100155
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/FT150100415
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP210102103
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectAstronomy & Astrophysics
dc.subjectFAST RADIO-BURST
dc.subjectMASS-METALLICITY RELATION
dc.subjectSTAR-FORMING GALAXIES
dc.subjectGALACTIC-CENTER
dc.subjectSTELLAR
dc.subjectPOPULATION
dc.subjectEMISSION
dc.subjectENVIRONMENT
dc.subjectLUMINOSITY
dc.subjectTRANSIENTS
dc.titleChronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A
dc.typeJournal Article
dcterms.source.volume919
dcterms.source.number2
dcterms.source.issn2041-8205
dcterms.source.titleAstrophysical Journal Letters
dc.date.updated2023-04-19T05:43:00Z
curtin.departmentSchool of Elec Eng, Comp and Math Sci (EECMS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidJames, Clancy [0000-0002-6437-6176]
curtin.contributor.researcheridJames, Clancy [G-9178-2015]
curtin.identifier.article-numberARTN L23
dcterms.source.eissn2041-8213
curtin.contributor.scopusauthoridJames, Clancy [18042095200]
curtin.contributor.scopusauthoridShannon, Ryan [44861629500]
curtin.repositoryagreementV3


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