The miniJPAS Survey: Detection of the double-core Ly<i>α</i> morphology for two high-redshift QSOs

Rahna, P. T.; Zheng, Zhen-Ya; Chies-Santos, Ana L.; Cai, Zheng; Spinoso, Daniele; Márquez, I.; Overzier, Roderik; Abramo, L. Raul; Bonoli, Silvia; Kehrig, C.; Díaz-García, L. A.; Pović, M.; Soria, Roberto; Diego, J. M.; Broadhurst, Tom; Delgado, R. M. González; Alcaniz, J. S.; Benı́tez, N.; Carneiro, S.; Cenarro, A. J.; Cristóbal-Hornillos, D.; Dupke, Renato A.; Ederoclite, A.; Hernán-Caballero, A.; Sodré, Laerte; Marín-Franch, A.; Oliveira, C. Mendes de; Moles, M.; Sodré, L.; Taylor, Keith; Varela, J.; Ramió, H. Vázquez

doi:10.1051/0004-6361/202244711

Cited by 2 publications

(1 citation statement)

References 114 publications

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“…This survey has demonstrated adequate capacity for galaxy evolution studies through the J-spectra retrieved from the narrow band filters (e.g., González Delgado et al 2021;Rodríguez Martín et al 2022). AGN studies are also suitable on miniJPAS; Queiroz et al (2022) provides a selection of quasar candidates obtained with machine learning methods, and Rahna et al (2022) detects a double-core Lyα morphology on two quasars using the narrowband images. Since our aim is to study the host galaxy and AGN properties, particularly their inferred accretion rate distributions, we chose an X-ray selection because it is one of the least biased methods to select AGN.…”

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confidence: 99%

The miniJPAS survey: AGN and host galaxy coevolution of X-ray-selected sources

López

et al. 2023

A&A

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Studies indicate strong evidence of a scaling relation in the local Universe between the supermassive black hole mass (MBH) and the stellar mass of their host galaxies (M⋆). They even show similar histories across cosmic times of their differential terms: the star formation rate (SFR) and black hole accretion rate (BHAR). However, a clear picture of this coevolution is far from being understood. We selected an X-ray sample of active galactic nuclei (AGN) up to z = 2.5 in the miniJPAS footprint. Their X-ray to infrared spectral energy distributions (SEDs) have been modeled with the CIGALE code, constraining the emission to 68 bands, from which 54 are the narrow filters from the miniJPAS survey. For a final sample of 308 galaxies, we derived their physical properties, such as their M⋆, SFR, star formation history (SFH), and the luminosity produced by the accretion process of the central BH (LAGN). For a subsample of 113 sources, we also fit their optical spectra to obtain the gas velocity dispersion from the broad emission lines and estimated the MBH. We calculated the BHAR in physical units depending on two radiative efficiency regimes. We find that the Eddington ratios (λEdd) and its popular proxy (LX/M⋆) have a difference of 0.6 dex, on average, and a KS test indicates that they come from different distributions. Our sources exhibit a considerable scatter on the MBH − M⋆ scaling relation, which can explain the difference between λEdd and its proxy. We also modeled three evolution scenarios for each source to recover the integral properties at z = 0. Using the SFR and BHAR, we show a notable diminution in the scattering between MBH − M⋆. For the last scenario, we considered the SFH and a simple energy budget for the AGN accretion, and we retrieved a relation similar to the calibrations known for the local Universe. Our study covers ∼1 deg2 in the sky and is sensitive to biases in luminosity. Nevertheless, we show that, for bright sources, the link between the differential values (SFR and BHAR) and their decoupling based on an energy limit is the key that leads to the local MBH − M⋆ scaling relation. In the future, we plan to extend this methodology to a thousand degrees of the sky using JPAS with an X-ray selection from eROSITA, to obtain an unbiased distribution of BHAR and Eddington ratios.

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Section: Introductionmentioning

confidence: 99%

The miniJPAS survey: AGN and host galaxy coevolution of X-ray-selected sources

López

et al. 2023

A&A

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The miniJPAS and J-NEP surveys: Identification and characterization of the Lyα emitter population and the Lyα luminosity function at redshift 2.05 < z < 3.75

Torralba-Torregrosa,

Gurung-López,

Arnalte-Mur

et al. 2023

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We present the Lyman-α (Lyα) luminosity function (LF) at 2.05 < z < 3.75, estimated from a sample of 67 Lyα-emitter (LAE) candidates in the Javalambre Physics of the Accelerating Universe Astronomical Survey (J-PAS) pathfinder surveys: miniJPAS and J-NEP. These two surveys cover a total effective area of ∼1.14 deg2 with 54 narrow band (NB) filters (FWHM ∼ 145 Å) across the optical range, with typical limiting magnitudes of ∼23. This set of NBs allowed us to probe Lyα emission in a wide and continuous range of redshifts. We developed a method for detecting Lyα emission for the estimation of the Lyα LF using the whole J-PAS filter set. We tested this method by applying it to the miniJPAS and J-NEP data. In order to compute the corrections needed to estimate the Lyα LF and to test the performance of the candidate selection method, we built mock catalogs. These include representative populations of LAEs at 1.9 < z < 4.5 as well as their expected contaminants, namely low-z galaxies and z < 2 quasi-stellar objects (QSOs). We show that our method is able to provide the Lyα LF at the intermediate-bright range of luminosity (43.5 ≲ log10(LLyα/erg s−1) ≲ 44.5) combining both miniJPAS and J-NEP. The photometric information provided by these surveys suggests that our samples are dominated by bright, Lyα-emitting active galactic nuclei (i.e., AGNs). At log10(LLyα/erg s−1) < 44.5, we fit our Lyα LF to a power law with a slope of A = 0.70 ± 0.25. We also fit a Schechter function to our data, obtaining the following: log10(Φ∗/Mpc−3) = −6.30−0.70+0.48, log10(L∗/erg s−1) = 44.85−0.32+0.50, and α = −1.65−0.27+0.29. Overall, our results confirm the presence of an AGN component at the bright end of the Lyα LF. In particular, we find no significant contribution of star-forming LAEs to the Lyα LF at log10(LLyα/erg s−1) > 43.5. This work serves as a proof of concept for the results that can be obtained with the upcoming data releases of the J-PAS survey.

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The miniJPAS Survey: Detection of the double-core Lyα morphology for two high-redshift QSOs

Cited by 2 publications

References 114 publications

The miniJPAS survey: AGN and host galaxy coevolution of X-ray-selected sources

The miniJPAS survey: AGN and host galaxy coevolution of X-ray-selected sources

The miniJPAS and J-NEP surveys: Identification and characterization of the Lyα emitter population and the Lyα luminosity function at redshift 2.05 < z < 3.75

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