Characterization of M51 supernova remnants with the imaging spectrometer SITELLE
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917935737470976 |
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| author | Gamache, Billy Drissen, Laurent Robert, Carmelle Posternak, Mykola |
| author_facet | Gamache, Billy Drissen, Laurent Robert, Carmelle Posternak, Mykola |
| contents | We present preliminary results of a detailed 3D study of supernova remnants in the nearby spiral M51 using data from the SIGNALS survey obtained with the imaging Fourier transform spectrometer SITELLE at the Canada-France-Hawaii telescope (CFHT). Data cubes covering the entire galaxy were gathered in three spectral ranges: SN3 (647-685 nm, R = 5000), SN2 (482-513 nm, R = 600) and SN1 (363-386 nm, R = 1000). The spectral resolution of the SN3 cube allows a precise, spatially resolved measurement of the velocity dispersion of each object. While most of the SNRs were known from previous surveys based on imagery and long-slit spectroscopy, we now provide 2D line flux and kinematic maps for all of them and found 20 new candidates. Most of the SNRs show velocity dispersions ($σ$) in the range 30-80 km/s, which is typical for middle-aged SNRs. Finally, we compare the properties of SNRs with those of thousands of HII regions included in the same dataset. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_08888 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Characterization of M51 supernova remnants with the imaging spectrometer SITELLE Gamache, Billy Drissen, Laurent Robert, Carmelle Posternak, Mykola Astrophysics of Galaxies We present preliminary results of a detailed 3D study of supernova remnants in the nearby spiral M51 using data from the SIGNALS survey obtained with the imaging Fourier transform spectrometer SITELLE at the Canada-France-Hawaii telescope (CFHT). Data cubes covering the entire galaxy were gathered in three spectral ranges: SN3 (647-685 nm, R = 5000), SN2 (482-513 nm, R = 600) and SN1 (363-386 nm, R = 1000). The spectral resolution of the SN3 cube allows a precise, spatially resolved measurement of the velocity dispersion of each object. While most of the SNRs were known from previous surveys based on imagery and long-slit spectroscopy, we now provide 2D line flux and kinematic maps for all of them and found 20 new candidates. Most of the SNRs show velocity dispersions ($σ$) in the range 30-80 km/s, which is typical for middle-aged SNRs. Finally, we compare the properties of SNRs with those of thousands of HII regions included in the same dataset. |
| title | Characterization of M51 supernova remnants with the imaging spectrometer SITELLE |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2409.08888 |