High-resolution radio observations of massive protostars in the SARAO MeerKAT Galactic Plane Survey
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866912358785351680 |
|---|---|
| author | Obonyo, W. O Hoare, M. G Lumsden, S. L Chibueze, J. O. Ugwu, C. J. |
| author_facet | Obonyo, W. O Hoare, M. G Lumsden, S. L Chibueze, J. O. Ugwu, C. J. |
| contents | We present high-resolution observations made with the Australia Telescope Compact Array (ATCA) at 5.5 GHz and 9.0 GHz of a sample of twenty-eight massive protostars. These protostars were initially detected at radio wavelengths in the MeerKAT Galactic Plane Survey at 1.3 GHz, where they were unresolved with an angular resolution of approximately 8 arcseconds. The resolution of the ATCA observations at 5.5 GHz and 9.0 GHz are significantly higher at, 2.0 and 1.2 arc seconds, respectively. The highest angular resolution corresponds to a linear resolution of 1920 AU for our nearest object. This improvement in resolution enabled us to resolve the components of extended emission and to more accurately determine the nature of the objects. Approximately 80% of the detections were classified as jets with 68% of the jets found to be associated with non-thermal emission. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_01677 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-resolution radio observations of massive protostars in the SARAO MeerKAT Galactic Plane Survey Obonyo, W. O Hoare, M. G Lumsden, S. L Chibueze, J. O. Ugwu, C. J. Astrophysics of Galaxies Solar and Stellar Astrophysics We present high-resolution observations made with the Australia Telescope Compact Array (ATCA) at 5.5 GHz and 9.0 GHz of a sample of twenty-eight massive protostars. These protostars were initially detected at radio wavelengths in the MeerKAT Galactic Plane Survey at 1.3 GHz, where they were unresolved with an angular resolution of approximately 8 arcseconds. The resolution of the ATCA observations at 5.5 GHz and 9.0 GHz are significantly higher at, 2.0 and 1.2 arc seconds, respectively. The highest angular resolution corresponds to a linear resolution of 1920 AU for our nearest object. This improvement in resolution enabled us to resolve the components of extended emission and to more accurately determine the nature of the objects. Approximately 80% of the detections were classified as jets with 68% of the jets found to be associated with non-thermal emission. |
| title | High-resolution radio observations of massive protostars in the SARAO MeerKAT Galactic Plane Survey |
| topic | Astrophysics of Galaxies Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2505.01677 |