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

Autor: Rahna, P. T., Zheng, Zhen-Ya, Chies-Santos, A. L., Cai, Z. Y., Spinoso, Daniele, Márquez, Isabel, Overzier, Roderik, Abramo, L. R., Bonoli, S., Kehrig, C., Díaz-García, L. A., Pović, Mirjana, Soria, R., Diego, José María, Broadhurst, Tom, González Delgado, Rosa M., Alcaniz, J., Benítez, Narciso, Carneiro, Saulo, Cenarro, A. J., Cristóbal-Hornillos, David, Dupke, R. A., Ederoclite, Alessandro, Hernán-Caballero, Antonio, López-Sanjuan, C., Marín-Franch, Antonio, Mendes de Oliveira, C., Moles, Mariano, Sodré Jr., L., Taylor, K., Varela, Jesús, Vázquez Ramió, H., JPAS team
Přispěvatelé: National Science Foundation (US), Pioneer Fund, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul, Chinese Academy of Sciences, Japan Society for the Promotion of Science, Japan Science and Technology Agency, Gobierno de Aragón, European Commission, Fondo de Inversiones de Teruel, Ministerio de Ciencia, Innovación y Universidades (España), National Natural Science Foundation of China, Fundações de Amparo à Pesquisa (Brasil), University of Tartu, Agencia Estatal de Investigación (España), National Astronomical Observatory of China
Rok vydání: 2022
Předmět:
Zdroj: Astronomy & Astrophysics. 668:A148
ISSN: 1432-0746
0004-6361
Popis: Extragalactic astronomy.
[Context] The Lyα emission is an important tracer of neutral gas in a circum-galactic medium (CGM) around high-z quasi-stellar objects (QSOs). The origin of Lyα emission around QSOs is still under debate, bringing on significant implications for galaxy formation and evolution.
[Aims] In this paper, we study Lyα nebulae around two high redshift QSOs, SDSS J141935.58+525710.7 at z = 3.218 (hereafter QSO1) and SDSS J141813.40+525240.4 at z = 3.287 (hereafter QSO2), from the miniJPAS survey within the All-wavelength Extended Groth Strip International Survey (AEGIS) field.
[Methods] Using the contiguous narrow-band (NB) images from the miniJPAS survey and Sloan Digital Sky Survey (SDSS) spectra, we analyzed their morphology, nature, and origin.
[Results] We report the serendipitous detection of double-core Lyα morphology around two QSOs, which is rarely seen among other QSOs. The separations of the two Lyα cores are 11.07 ± 2.26 kpcs (1.47 ± 0.3″) and 9.73 ± 1.55 kpcs (1.31 ± 0.21″), with Lyα line luminosities of ∼3.35 × 1044 erg s−1 and ∼6.99 × 1044 erg s −1 for QSO1 and QSO2, respectively. The miniJPAS NB images show evidence of extended Lyα and CIV morphology for both QSOs and extended HeII morphology for QSO1.
[Conclusions] These two QSOs may be potential candidates for the new enormous Lyman alpha nebula (ELAN) found from the miniJPAS survey due to their extended morphology in the shallow depth and relatively high Lyα luminosities. We suggest that galactic outflows are the major powering mechanism for the double-core Lyα morphology. Considering the relatively shallow exposures of miniJPAS, the objects found here could merely form the cusp of a promising number of such objects that will be uncovered in the upcoming full Javalambre-Physics of the Accelerated Universe Astrophysical Survey (J-PAS) survey and deep integral field units (IFU) observations with 8–10 m telescopes will be essential for constraining the underlying physical mechanism that is responsible for the double-cored morphology.
Z.Y.Z. acknowledges support by the National Science Foundation of China (12022303), the China-Chile Joint Research Fund (CCJRF No. 1906), and the CAS Pioneer Hundred Talents Program. RPT thanks the CAS President’s International Fellowship Initiative (PIFI) (Grant No. E085201009) for supporting this work. We acknowledge the science research grants from the China Manned Space Project with No. CMS-CSST-2021-A04 and CMS-CSST-2021-A07. ACS acknowledges funding from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and the Rio Grande do Sul Research Foundation (FAPERGS) through grants CNPq-11153/2018-6, CNPq-314301/2021-6 and FAPERGS/CAPES 19/2551-0000696-9 and the Chinese Academy of Sciences (CAS) President’s International Fellowship Initiative (PIFI) through grant E085201009. R.P.T. and Z.Y.Z. thanks Shuairu Zhu, Fang-Ting Yuan, Ruqiu Lin, and Xiang Ji for their useful discussion during the preparations of the manuscript. R.P.T. acknowledges Carolina Queiroz for sharing information about the JPAS database. This paper has gone through the internal review by the J-PAS collaboration. Based on observations made with the JST/T250 telescope and JP Cam at the Observatorio Astrofísico de Javalambre (OAJ), in Teruel, owned, managed, and operated by the Centro de Estudios de Física del Cosmos de Aragón (CEFCA). We acknowledge the OAJ Data Processing and Archiving Unit (UPAD) for reducing and calibrating the OAJ data used in this work. Funding for the J-PAS Project has been provided by the Governments of Spain and Aragón through the Fondo de Inversión de Teruel, European FEDER funding and the Spanish Ministry of Science, Innovation and Universities, and by the Brazilian agencies FINEP, FAPESP, FAPERJ and by the National Observatory of Brazil. Additional funding was also provided by the Tartu Observatory and by the J-PAS Chinese Astronomical Consortium. L.A.D.G., C.K., and R.G.D., acknowledge financial support from the State Agency for Research of the Spanish MCIU through the “Center of Excellence Severo Ochoa” award to the Instituto de Astrofísica de Andalucía (SEV-2017-0709), and to PID2019-109067-GB100.
Databáze: OpenAIRE
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