Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A
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 MM...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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IOP Publishing Ltd
2021
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| Online Access: | http://purl.org/au-research/grants/arc/FT190100155 http://hdl.handle.net/20.500.11937/91552 |
| _version_ | 1848765545484124160 |
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| author | Fong, W.F. Dong, Y. Leja, J. Bhandari, S. Day, C.K. Deller, A.T. Kumar, P. Prochaska, J.X. Scott, D.R. Bannister, K.W. Eftekhari, T. Gordon, A.C. Heintz, K.E. James, Clancy Kilpatrick, C.D. Mahony, E.K. Rouco Escorial, A. Ryder, S.D. Shannon, Ryan Tejos, N. |
| author_facet | Fong, W.F. Dong, Y. Leja, J. Bhandari, S. Day, C.K. Deller, A.T. Kumar, P. Prochaska, J.X. Scott, D.R. Bannister, K.W. Eftekhari, T. Gordon, A.C. Heintz, K.E. James, Clancy Kilpatrick, C.D. Mahony, E.K. Rouco Escorial, A. Ryder, S.D. Shannon, Ryan Tejos, N. |
| author_sort | Fong, W.F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T11:36:57Z |
| format | Journal Article |
| id | curtin-20.500.11937-91552 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:36:57Z |
| publishDate | 2021 |
| publisher | IOP Publishing Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-915522023-05-16T07:39:36Z Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A Fong, W.F. Dong, Y. Leja, J. Bhandari, S. Day, C.K. Deller, A.T. Kumar, P. Prochaska, J.X. Scott, D.R. Bannister, K.W. Eftekhari, T. Gordon, A.C. Heintz, K.E. James, Clancy Kilpatrick, C.D. Mahony, E.K. Rouco Escorial, A. Ryder, S.D. Shannon, Ryan Tejos, N. Science & Technology Physical Sciences Astronomy & Astrophysics FAST RADIO-BURST MASS-METALLICITY RELATION STAR-FORMING GALAXIES GALACTIC-CENTER STELLAR POPULATION EMISSION ENVIRONMENT LUMINOSITY TRANSIENTS 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. 2021 Journal Article http://hdl.handle.net/20.500.11937/91552 10.3847/2041-8213/ac242b English http://purl.org/au-research/grants/arc/FT190100155 http://purl.org/au-research/grants/arc/FT150100415 http://purl.org/au-research/grants/arc/DP210102103 IOP Publishing Ltd fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics FAST RADIO-BURST MASS-METALLICITY RELATION STAR-FORMING GALAXIES GALACTIC-CENTER STELLAR POPULATION EMISSION ENVIRONMENT LUMINOSITY TRANSIENTS Fong, W.F. Dong, Y. Leja, J. Bhandari, S. Day, C.K. Deller, A.T. Kumar, P. Prochaska, J.X. Scott, D.R. Bannister, K.W. Eftekhari, T. Gordon, A.C. Heintz, K.E. James, Clancy Kilpatrick, C.D. Mahony, E.K. Rouco Escorial, A. Ryder, S.D. Shannon, Ryan Tejos, N. Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A |
| title | Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A |
| title_full | Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A |
| title_fullStr | Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A |
| title_full_unstemmed | Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A |
| title_short | Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A |
| title_sort | chronicling the host galaxy properties of the remarkable repeating frb 20201124a |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics FAST RADIO-BURST MASS-METALLICITY RELATION STAR-FORMING GALAXIES GALACTIC-CENTER STELLAR POPULATION EMISSION ENVIRONMENT LUMINOSITY TRANSIENTS |
| url | http://purl.org/au-research/grants/arc/FT190100155 http://purl.org/au-research/grants/arc/FT190100155 http://purl.org/au-research/grants/arc/FT190100155 http://hdl.handle.net/20.500.11937/91552 |