Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy
We present a high-resolution analysis of the host galaxy of fast radio burst (FRB) 190608, an SB(r)c galaxy at z = 0.11778 (hereafter HG 190608), to dissect its local environment and its contributions to the FRB properties. Our Hubble Space Telescope Wide Field Camera 3 ultraviolet and visible light...
| 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/DP180100857 http://hdl.handle.net/20.500.11937/91003 |
| _version_ | 1848765483151523840 |
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| author | Chittidi, J.S. Simha, S. Mannings, A. Prochaska, J.X. Ryder, S.D. Rafelski, M. Neeleman, M. Macquart, Jean-Pierre Tejos, N. Jorgenson, R.A. Day, C.K. Marnoch, L. Bhandari, S. Deller, A.T. Qiu, H. Bannister, K.W. Shannon, Ryan Heintz, K.E. |
| author_facet | Chittidi, J.S. Simha, S. Mannings, A. Prochaska, J.X. Ryder, S.D. Rafelski, M. Neeleman, M. Macquart, Jean-Pierre Tejos, N. Jorgenson, R.A. Day, C.K. Marnoch, L. Bhandari, S. Deller, A.T. Qiu, H. Bannister, K.W. Shannon, Ryan Heintz, K.E. |
| author_sort | Chittidi, J.S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present a high-resolution analysis of the host galaxy of fast radio burst (FRB) 190608, an SB(r)c galaxy at z = 0.11778 (hereafter HG 190608), to dissect its local environment and its contributions to the FRB properties. Our Hubble Space Telescope Wide Field Camera 3 ultraviolet and visible light image reveals that the subarcsecond localization of FRB 190608 is coincident with a knot of star formation (ΣSFR = 1.5 × 10-2 M⊙ yr-1 kpc-2) in the northwest spiral arm of HG 190608. Using Hβ emission present in our Keck Cosmic Web Imager integral field spectrum of the galaxy with a surface brightness of μHβ=(3.36 ± 0.21)× 10-17 erg s-1 cm-2 arcsec-2, we infer an extinction-corrected Hα surface brightness and compute a dispersion measure (DM) from the interstellar medium of HG 190608 of DMHost,ISM = 94 ± 38 pc cm-3. The galaxy rotates with a circular velocity vcirc = 141 ± 8 km s-1 at an inclination igas = 37° ± 3°, giving a dynamical mass Mhalodyn ≈ 1011.96±0.08 M⊙. This implies a halo contribution to the DM of DMHost,Halo = 55 ± 25 pc cm-3 subject to assumptions on the density profile and fraction of baryons retained. From the galaxy rotation curve, we infer a bar-induced pattern speed of Ωp = 34 ± 6 km s-1 kpc-1 using linear resonance theory. We then calculate the maximum time since star formation for a progenitor using the furthest distance to the arm's leading edge within the localization, and find tenc = 21-6+25 Myr. Unlike previous high-resolution studies of FRB environments, we find no evidence of disturbed morphology, emission, or kinematics for FRB 190608. |
| first_indexed | 2025-11-14T11:35:58Z |
| format | Journal Article |
| id | curtin-20.500.11937-91003 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:35:58Z |
| publishDate | 2021 |
| publisher | IOP Publishing Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-910032023-05-24T00:53:21Z Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy Chittidi, J.S. Simha, S. Mannings, A. Prochaska, J.X. Ryder, S.D. Rafelski, M. Neeleman, M. Macquart, Jean-Pierre Tejos, N. Jorgenson, R.A. Day, C.K. Marnoch, L. Bhandari, S. Deller, A.T. Qiu, H. Bannister, K.W. Shannon, Ryan Heintz, K.E. Science & Technology Physical Sciences Astronomy & Astrophysics FAST RADIO-BURST GAMMA-RAY BURSTS STAR-FORMATION MAGNETIC-FIELD ELECTRON-DENSITY COSMIC WEB EMISSION CONSTRAINTS MORPHOLOGY SUPERNOVAE astro-ph.GA astro-ph.GA We present a high-resolution analysis of the host galaxy of fast radio burst (FRB) 190608, an SB(r)c galaxy at z = 0.11778 (hereafter HG 190608), to dissect its local environment and its contributions to the FRB properties. Our Hubble Space Telescope Wide Field Camera 3 ultraviolet and visible light image reveals that the subarcsecond localization of FRB 190608 is coincident with a knot of star formation (ΣSFR = 1.5 × 10-2 M⊙ yr-1 kpc-2) in the northwest spiral arm of HG 190608. Using Hβ emission present in our Keck Cosmic Web Imager integral field spectrum of the galaxy with a surface brightness of μHβ=(3.36 ± 0.21)× 10-17 erg s-1 cm-2 arcsec-2, we infer an extinction-corrected Hα surface brightness and compute a dispersion measure (DM) from the interstellar medium of HG 190608 of DMHost,ISM = 94 ± 38 pc cm-3. The galaxy rotates with a circular velocity vcirc = 141 ± 8 km s-1 at an inclination igas = 37° ± 3°, giving a dynamical mass Mhalodyn ≈ 1011.96±0.08 M⊙. This implies a halo contribution to the DM of DMHost,Halo = 55 ± 25 pc cm-3 subject to assumptions on the density profile and fraction of baryons retained. From the galaxy rotation curve, we infer a bar-induced pattern speed of Ωp = 34 ± 6 km s-1 kpc-1 using linear resonance theory. We then calculate the maximum time since star formation for a progenitor using the furthest distance to the arm's leading edge within the localization, and find tenc = 21-6+25 Myr. Unlike previous high-resolution studies of FRB environments, we find no evidence of disturbed morphology, emission, or kinematics for FRB 190608. 2021 Journal Article http://hdl.handle.net/20.500.11937/91003 10.3847/1538-4357/ac2818 English http://purl.org/au-research/grants/arc/DP180100857 IOP Publishing Ltd fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics FAST RADIO-BURST GAMMA-RAY BURSTS STAR-FORMATION MAGNETIC-FIELD ELECTRON-DENSITY COSMIC WEB EMISSION CONSTRAINTS MORPHOLOGY SUPERNOVAE astro-ph.GA astro-ph.GA Chittidi, J.S. Simha, S. Mannings, A. Prochaska, J.X. Ryder, S.D. Rafelski, M. Neeleman, M. Macquart, Jean-Pierre Tejos, N. Jorgenson, R.A. Day, C.K. Marnoch, L. Bhandari, S. Deller, A.T. Qiu, H. Bannister, K.W. Shannon, Ryan Heintz, K.E. Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy |
| title | Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy |
| title_full | Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy |
| title_fullStr | Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy |
| title_full_unstemmed | Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy |
| title_short | Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy |
| title_sort | dissecting the local environment of frb 190608 in the spiral arm of its host galaxy |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics FAST RADIO-BURST GAMMA-RAY BURSTS STAR-FORMATION MAGNETIC-FIELD ELECTRON-DENSITY COSMIC WEB EMISSION CONSTRAINTS MORPHOLOGY SUPERNOVAE astro-ph.GA astro-ph.GA |
| url | http://purl.org/au-research/grants/arc/DP180100857 http://hdl.handle.net/20.500.11937/91003 |