Extracting H$\alpha$ flux from photometric data in the J-PLUS survey

Abstract

We present the main steps that will be taken to extract H$\alpha$ emission flux from Javalambre Photometric Local Universe Survey (J-PLUS) photometric data. For galaxies with $z\lesssim 0.015$, the H$\alpha$+[NII] emission is covered by the J-PLUS narrow-band filter $F660$. We explore three different methods to extract the H$\alpha$ + [NII] flux from J-PLUS photometric data: a combination of a broad-band and a narrow-band filter ($r^{\prime }$ and $F660$), two broad-band and a narrow-band one ($r^{\prime }$, $i^{\prime }$ and $F660$), and a SED-fitting based method using 8 photometric points. To test these methodologies, we simulated J-PLUS data from a sample of 7511 SDSS spectra with measured H$\alpha$ flux. Based on the same sample, we derive two empirical relations to correct the derived H$\alpha$+[NII] flux from dust extinction and [NII] contamination. We find that the only unbiased method is the SED fitting based one. The combination of two filters underestimates the measurements of the H$\alpha$ + [NII] flux by a 28%, while the three filters method by a 9%. We study the error budget of the SED-fitting based method and find that, in addition to the photometric error, our measurements have a systematic uncertainty of a 4.3%. Several sources contribute to this uncertainty: differences between our measurement procedure and the one used to derive the spectroscopic values, the use of simple stellar populations as templates, and the intrinsic errors of the spectra, which were not taken into account. Apart from that, the empirical corrections for dust extinction and [NII] contamination add an extra uncertainty of 14%. Given the J-PLUS photometric system, the best methodology to extract H$\alpha$ + [NII] flux is the SED-fitting based one. Using this method, we are able to recover reliable H$\alpha$ fluxes for thousands of nearby galaxies in a robust and homogeneous way.

arXiv comment11 pages, 14 figures. Minor changes to match the published version

References in corpus (25)

• Stellar population synthesis at the resolution of 2003
• Star Formation in Galaxies Along the Hubble Sequence
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• Correcting for the Effects of Interstellar Extinction
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• The Calibration of Mid-Infrared Star Formation Rate Indicators
• The stellar mass assembly of galaxies from z=0 to z=4. Analysis of a sample selected in the rest-frame near-infrared with Spitzer
• [OII] as a Star Formation Rate Indicator
• A large Hα survey at z=2.23, 1.47, 0.84 & 0.40: the 11 Gyr evolution of star-forming galaxies from HiZELS
• Predicting dust extinction from the stellar mass of a galaxy
• Stellar velocity dispersions and emission line properties of SDSS-III/BOSS galaxies
• Star formation at z=1.47 from HiZELS: An Hα+[OII] double-blind study
• The H alpha Galaxy Survey I. The galaxy sample, H alpha narrow-band observations and star formation parameters for 334 galaxies
• The Luminosity Function and Star Formation Rate between Redshifts of 0.07 and 1.47 for Narrow-band Emitters in the Subaru Deep Field
• HiZELS: a high redshift survey of H-alpha emitters. I: the cosmic star-formation rate and clustering at z=2.23
• The stellar mass function of star-forming galaxies and the mass-dependent SFR function since z=2.23 from HiZELS
• HiZELS: a high redshift survey of H-alpha emitters. II: the nature of star-forming galaxies at z=0.84
• The H-alpha Luminosity Function and Star Formation Rate Volume Density at z=0.8 from the NEWFIRM H-alpha Survey
• The KPNO International Spectroscopic Survey. I. Description of the Survey
• The Halpha-based Star Formation Rate Density of the Universe at z=0.84
• The [OII]3727 Luminosity function and Star Formation Rate at z~1.2 in the COSMOS 2 Square-degree Field and the Subaru Deep Field
• The KPNO International Spectroscopic Survey. II. H-alpha Selected Survey List 1
• The environmental impacts on the star formation main sequence: an H-alpha study of the newly discovered rich cluster at z=1.52
• A contribution to the selection of emission-line galaxies using narrow-band filters in the optical airglow windows
• The Properties of Hα Emission-Line Galaxies at z = 2.24

Cited by in corpus (27)

• J-PLUS: The Javalambre Photometric Local Universe Survey
• Slicing COSMOS with SC4K: the evolution of typical Lya emitters and the Lya escape fraction from z~2 to z~6
• The miniJPAS survey: a preview of the Universe in 56 colours
• MAHALO Deep Cluster Survey I. Accelerated and enhanced galaxy formation in the densest regions of a protocluster at z=2.5
• The ionising photon production efficiency at z~6 for Lyman-alpha emitters using JEMS and MUSE
• J-PLUS: photometric calibration of large area multi-filter surveys with stellar and white dwarf loci
• The miniJPAS survey: Identification and characterization of galaxy populations with the J-PAS photometric system
• An environmental dependence of the physical and structural properties in the Hydra Cluster galaxies
• J-PLUS: Unveiling the brightest-end of the Lyα luminosity function at 2.0<z<3.3 over 1000 deg^2
• J-PLUS: Synthetic galaxy catalogues with emission lines for photometric surveys
• J-PLUS: measuring $\mathrm{H}\alpha$ emission line fluxes in the nearby universe
• A 16 deg${}^2$ survey of emission-line galaxies at z<1.6 from HSC-SSP PDR2 and CHORUS
• J-PAS: Measuring emission lines with artificial neural networks
• SHARDS: A global view of the star formation activity at z~0.84 and z~1.23
• SIEGE III: The formation of dense stellar clusters in sub-parsec resolution cosmological simulations with individual star feedback
• J-PLUS: The star formation main sequence and rate density at d < 75 Mpc
• Star-forming galaxies at low-redshift in the SHARDS survey
• Estimating stellar population and emission line properties in S-PLUS galaxies
• A Spatially Resolved Radio Spectral Index Study of the Dwarf Irregular Galaxy NGC\,1569
• J-PLUS: Spectroscopic validation of H$\alpha$ emission line maps in spatially resolved galaxies
• Possible environmental quenching in an interacting little red dot pair at $z\sim 7$
• Properties of galaxies at the faint end of the H$\alpha$ luminosity function at $z\sim 0.62$
• The S-PLUS Fornax Project (S+FP): Mapping H$\alpha$+[NII] emission in 77 Fornax galaxy members reaching $\sim$4 Rvir
• Spatially resolved stellar populations and emission lines properties in nearby galaxies with J-PLUS -- I. Method and first results for the M101 group
• Supernova environments in J-PLUS. Normalized Cumulative Rank distributions and stellar population synthesis, combining narrow- and broad-band filters
• The S-PLUS Fornax Project (S+FP): An extragalactic catalog covering $\sim$ 5 virial radii around NGC 1399 with galaxy properties
• Analysis of spatially resolved stellar populations and emission line properties in nearby galaxies with J-PLUS data. II-Results for the M51 group and first comparison with the M101 group