J-PLUS: Spectroscopic validation of H$α$ emission line maps in spatially resolved galaxies
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| author | Rahna, P. T. Akhlaghi, M. López-Sanjuan, C. Logroño-García, R. Muniesa, D. J. Domínguez-Sánchez, H. Fernández-Ontiveros, J. A. Sobral, David Lumbreras-Calle, A. Chies-Santos, A. L. Rodríguez-Martín, J. E. Eskandarlou, S. Ederoclite, A. Alvarez-Candal, A. Ramió, H. Vázquez Cenarro, A. J. Marín-Franch, A. Alcaniz, J. Angulo, R. E. Cristóbal-Hornillos, D. Dupke, R. A. Hernández-Monteagudo, C. Moles, M. Sodré Jr., L. Varela, J. |
| author_facet | Rahna, P. T. Akhlaghi, M. López-Sanjuan, C. Logroño-García, R. Muniesa, D. J. Domínguez-Sánchez, H. Fernández-Ontiveros, J. A. Sobral, David Lumbreras-Calle, A. Chies-Santos, A. L. Rodríguez-Martín, J. E. Eskandarlou, S. Ederoclite, A. Alvarez-Candal, A. Ramió, H. Vázquez Cenarro, A. J. Marín-Franch, A. Alcaniz, J. Angulo, R. E. Cristóbal-Hornillos, D. Dupke, R. A. Hernández-Monteagudo, C. Moles, M. Sodré Jr., L. Varela, J. |
| contents | We present a dedicated automated pipeline to construct spatially resolved emission H$α$+[NII] maps and to derive the spectral energy distributions (SEDs) in 12 optical filters (five broad and seven narrow/medium) of H$α$ emission line regions in nearby galaxies (z $<$ 0.0165) observed by the Javalambre Photometric Local Universe Survey (J-PLUS). We used the $J0660$ filter of $140$Å width centered at $6600$Å to trace H$α$ + [NII] emission and $r$ and $i$ broad bands were used to estimate the stellar continuum. We create pure emission line images after the continnum subtraction, where the H$α$ emission line regions were detected. This method was also applied to Integral Field Unit (IFU) spectroscopic data from PHANGS-MUSE, CALIFA and MaNGA surveys by building synthetic narrow-bands based on J-PLUS filters. The studied sample includes the cross-matched catalog of these IFU surveys with J-PLUS third data release (DR3), amounting to $2$ PHANGS-MUSE, $78$ CALIFA, and $78$ MaNGA galaxies at $z < 0.0165$, respectively. We compared the H$α$+[NII] radial profiles from J-PLUS and the IFU surveys, finding good agreement within the expected uncertainties. We also compared the SEDs from the emission line regions detected in J-PLUS images, reproducing the main spectral features present in the spectroscopic data. Finally, we compared the emission fluxes from the J-PLUS and IFU surveys accounting for scale differences, finding a difference of only 2% with a dispersion of 7% in the measurements. The J-PLUS data provides reliable spatially resolved H$α$+[NII] emission maps for nearby galaxies. We provide the J-PLUS DR3 catalog for the $158$ galaxies with IFU data, including emission maps, SEDs of star-forming clumps, and radial profiles. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_05830 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | J-PLUS: Spectroscopic validation of H$α$ emission line maps in spatially resolved galaxies Rahna, P. T. Akhlaghi, M. López-Sanjuan, C. Logroño-García, R. Muniesa, D. J. Domínguez-Sánchez, H. Fernández-Ontiveros, J. A. Sobral, David Lumbreras-Calle, A. Chies-Santos, A. L. Rodríguez-Martín, J. E. Eskandarlou, S. Ederoclite, A. Alvarez-Candal, A. Ramió, H. Vázquez Cenarro, A. J. Marín-Franch, A. Alcaniz, J. Angulo, R. E. Cristóbal-Hornillos, D. Dupke, R. A. Hernández-Monteagudo, C. Moles, M. Sodré Jr., L. Varela, J. Astrophysics of Galaxies Instrumentation and Methods for Astrophysics We present a dedicated automated pipeline to construct spatially resolved emission H$α$+[NII] maps and to derive the spectral energy distributions (SEDs) in 12 optical filters (five broad and seven narrow/medium) of H$α$ emission line regions in nearby galaxies (z $<$ 0.0165) observed by the Javalambre Photometric Local Universe Survey (J-PLUS). We used the $J0660$ filter of $140$Å width centered at $6600$Å to trace H$α$ + [NII] emission and $r$ and $i$ broad bands were used to estimate the stellar continuum. We create pure emission line images after the continnum subtraction, where the H$α$ emission line regions were detected. This method was also applied to Integral Field Unit (IFU) spectroscopic data from PHANGS-MUSE, CALIFA and MaNGA surveys by building synthetic narrow-bands based on J-PLUS filters. The studied sample includes the cross-matched catalog of these IFU surveys with J-PLUS third data release (DR3), amounting to $2$ PHANGS-MUSE, $78$ CALIFA, and $78$ MaNGA galaxies at $z < 0.0165$, respectively. We compared the H$α$+[NII] radial profiles from J-PLUS and the IFU surveys, finding good agreement within the expected uncertainties. We also compared the SEDs from the emission line regions detected in J-PLUS images, reproducing the main spectral features present in the spectroscopic data. Finally, we compared the emission fluxes from the J-PLUS and IFU surveys accounting for scale differences, finding a difference of only 2% with a dispersion of 7% in the measurements. The J-PLUS data provides reliable spatially resolved H$α$+[NII] emission maps for nearby galaxies. We provide the J-PLUS DR3 catalog for the $158$ galaxies with IFU data, including emission maps, SEDs of star-forming clumps, and radial profiles. |
| title | J-PLUS: Spectroscopic validation of H$α$ emission line maps in spatially resolved galaxies |
| topic | Astrophysics of Galaxies Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2502.05830 |