A differentiable and optimizable 3D model for interpretation of observed spectral data cubes
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918377763635200 |
|---|---|
| author | Grassi, T. Pineda, J. E. Spezzano, S. Arzoumanian, D. Lique, F. Misugi, Y. Redaelli, E. Jensen, S. S. Caselli, P. |
| author_facet | Grassi, T. Pineda, J. E. Spezzano, S. Arzoumanian, D. Lique, F. Misugi, Y. Redaelli, E. Jensen, S. S. Caselli, P. |
| contents | Molecular spectral cubes of prestellar cores encode the information on the physical and chemical properties of these objects along the line of sight. To retrieve this information, we need an interpretable model that reproduces the observed spectra. We designed a differentiable 3D geometrical model that produces synthetic observations from the parameterized density and velocity fields, and that can be efficiently optimized to reproduce the real data cubes. The model has been applied to p-NH2D and N2D+ spectral cubes in the prestellar core L1544. The optimized model suggests that to reproduce the observed velocity difference between p-NH2D and N2D+ in L1544, an asymmetric structure in density and velocity is necessary. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_06791 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A differentiable and optimizable 3D model for interpretation of observed spectral data cubes Grassi, T. Pineda, J. E. Spezzano, S. Arzoumanian, D. Lique, F. Misugi, Y. Redaelli, E. Jensen, S. S. Caselli, P. Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Molecular spectral cubes of prestellar cores encode the information on the physical and chemical properties of these objects along the line of sight. To retrieve this information, we need an interpretable model that reproduces the observed spectra. We designed a differentiable 3D geometrical model that produces synthetic observations from the parameterized density and velocity fields, and that can be efficiently optimized to reproduce the real data cubes. The model has been applied to p-NH2D and N2D+ spectral cubes in the prestellar core L1544. The optimized model suggests that to reproduce the observed velocity difference between p-NH2D and N2D+ in L1544, an asymmetric structure in density and velocity is necessary. |
| title | A differentiable and optimizable 3D model for interpretation of observed spectral data cubes |
| topic | Astrophysics of Galaxies Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2603.06791 |