J/A+A/695/A200 J-PLUS Halpha emission line maps of galaxies (Rahna+, 2025)
J-PLUS: Spectroscopic validation of Halpha emission line maps in spatially
resolved galaxies.
Rahna P.T., Akhlaghi M., Lopez-Sanjuan C., Logrono-Garcia R., Muniesa D.J.,
Dominguez-Sanchez H., Fernandez-Ontiveros J.A., Sobral D.,
Lumbreras-Calle A., Chies-Santos A.L., Rodriguez-Martin J.E.,
Eskandarlou S., Ederoclite A., Alvarez-Candal E., Vazquez Ramio H.,
Cenarro A.J., Marin-Franch A., Alcaniz J., Angulo R.E.,
Cristobal-Hornillos D., Dupke R.A., Hernandez-Monteagudo C., Moles M.,
Sodre L. Jr, Varela J.
<Astron. Astrophys. 695, A200 (2025)>
=2025A&A...695A.200R 2025A&A...695A.200R (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; Redshifts ; Morphology ; Optical
Keywords: methods: data analysis - galaxies: general - galaxies: photometry -
galaxies: spiral - galaxies: star formation - galaxies: structure
Abstract:
We present a dedicated automated pipeline to construct spatially
resolved emission Hα+[NII] maps and to derive the spectral
energy distributions (SEDs) in 12 optical filters (five broad and
seven narrow/medium) of Hα 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 140Å width centered at 6600Å to
trace Hα+[NII] emission and r and i broad bands were used to
estimate the stellar continuum. We create pure emission line images
after the continuum subtraction, where the Hα 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 Hα+[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 Hα+[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.
Description:
Cross match catalog of J-PLUS with CALIFA, MaNGA and MUSE IFUs. The
table includes the following information: galaxy name, IFU name, RA,
DEC, redshift, Morphological type, and presence of Hα & [NII]
line in their IFU spectra.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 89 158 Cross match catalog of J-PLUS with CALIFA,
MaNGA and MUSE IFUs
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Galaxy Name of galaxy
25- 30 A6 --- IFU Name of IFU
32- 41 F10.6 deg RAdeg Right ascension (J2000)
43- 52 F10.7 deg DEdeg Declination (J2000)
54- 61 F8.6 --- z Redshift of the galaxy
63- 76 A14 --- MType Morphological type of galaxy (1)
78- 89 A12 --- Haline Presence of Ha+[NII] line in IFU spectra
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Note (1): The morphology of the MaNGA sample is taken from Vazquez-Mata et al.,
2022MNRAS.512.2222V 2022MNRAS.512.2222V, and the morphology type of CALIFA galaxies are
from NED database.
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Acknowledgements:
Payyasseri Rahna, rahna.payyasseri(at)gmail.com
(End) Patricia Vannier [CDS] 15-Feb-2025