NAOC Open IR
Chandra reveals a luminous Compton-thick QSO powering a Ly alpha blob in a z=4 starbursting protocluster
Vito, F.1,2,3,4; Brandt, W. N.5,6,7; Lehmer, B. D.8; Vignali, C.9,10; Zou, F.5,6; Bauer, F. E.2,3,11,12; Bremer, M.13; Gilli, R.10; Ivison, R. J.14; Spingola, C.9,15
2020-10-13
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume642Pages:13
AbstractContext. Galaxy clusters in the local universe descend from high-redshift overdense regions known as protoclusters. The large gas reservoirs and high rate of galaxy interaction in protoclusters are expected to enhance star-formation activity and trigger luminous supermassive black-hole accretion in the nuclear regions of the host galaxies.Aims. We investigated the active galactic nucleus (AGN) content of a gas-rich and starbursting protocluster at z=4.002, known as the Distant Red Core (DRC). In particular, we search for luminous and possibly obscured AGN in 13 identified members of the structure, and compare the results with protoclusters at lower redshifts. We also test whether a hidden AGN can power the Ly alpha blob (LAB) detected with VLT/MUSE in the DRC.Methods. We observed all of the identified members of the structure with 139 ks of Chandra ACIS-S imaging. Being less affected by absorption than optical and IR bands, even in the presence of large column densities of obscuring material, X-ray observations are the best tools to detect ongoing nuclear activity in the DRC galaxies.Results. We detect obscured X-ray emission from the two most gas-rich members of the DRC, named DRC-1 and DRC-2. Both of them are resolved into multiple interacting clumps in high-resolution Atacama Large Millimeter Array and Hubble Space Telescope observations. In particular, DRC-2 is found to host a luminous (L2-10 keV approximate to 3x10(45) erg s(-1) ) Compton-thick (N-H greater than or similar to 10(24) cm(-2)) quasar (QSO) candidate, comparable to the most luminous QSOs known at all cosmic times. The AGN fraction among DRC members is consistent with results found for lower redshift protoclusters. However, X-ray stacking analysis reveals that supermassive black hole (SMBH) accretion is likely also taking place in other DRC galaxies that are not detected individually by Chandra.Conclusions. The luminous AGN detected in the most gas-rich galaxies in the DRC and the widespread SMBH accretion in the other members, which is suggested by stacking analysis, point toward the presence of a strong link between large gas reservoirs, galaxy interactions, and luminous and obscured nuclear activity in protocluster members. The powerful and obscured QSO detected in DRC-2 is likely powering the nearby LAB detected with VLT/MUSE, possibly through photoionization; however, we propose that the diffuse Ly alpha emission may be due to gas shocked by a massive outflow launched by DRC-2 over a approximate to 10 kpc scale.
Keywordgalaxies: active galaxies: high-redshift quasars: general quasars: supermassive black holes galaxies: starburst X-rays: galaxies
Funding OrganizationCONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme
DOI10.1051/0004-6361/202038848
WOS KeywordACTIVE GALACTIC NUCLEI ; SUPERMASSIVE BLACK-HOLES ; STAR-FORMING GALAXIES ; X-RAY-EMISSION ; RADIO GALAXY ; ENVIRONMENTAL DEPENDENCE ; STELLAR POPULATION ; ELLIPTIC GALAXIES ; PROTO-CLUSTER ; AGN ACTIVITY
Language英语
Funding ProjectCONICYT[AFB-170002] ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA[AFB-170002] ; FONDECYT Regular[1190818] ; FONDECYT Regular[1200495] ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative[IC120009] ; CXC grant[GO9-20099X] ; ASI-INAF[2017-14-H.O] ; National Research Council of Science and Technology, Korea[EU-16-001] ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme[295.A-5029(A)]
Funding OrganizationCONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; CONICYT ; CONICYT ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; CASSACA through the Fourth call for tenders of the CASCONICYT Fund ; ANID grants Basal-CATA ; ANID grants Basal-CATA ; FONDECYT Regular ; FONDECYT Regular ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative ; CXC grant ; CXC grant ; ASI-INAF ; ASI-INAF ; National Research Council of Science and Technology, Korea ; National Research Council of Science and Technology, Korea ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme ; European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000584570600027
PublisherEDP SCIENCES S A
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80886
Collection中国科学院国家天文台
Corresponding AuthorVito, F.
Affiliation1.Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy
2.Pontificia Univ CatOlica Chile, Fac Fis, Inst Astrofis, Casilla 306, Santiago 22, Chile
3.Pontificia Univ CatOlica Chile, Fac Fis, Ctr Astroingn, Casilla 306, Santiago 22, Chile
4.Natl Astron Observ, Chinese Acad Sci South Amer Ctr Astron, CAS, Beijing 100012, Peoples R China
5.Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA
6.Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA
7.Penn State Univ, Dept Phys, University Pk, PA 16802 USA
8.Univ Arkansas, Dept Phys, 226 Phys Bldg,825 West Dickson St, Fayetteville, AR 72701 USA
9.Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy
10.INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy
11.Millennium Inst Astrophys MAS, Nuncio Monsenor Sotero Sanz 100, Santiago, Chile
12.Space Sci Inst, 4750 Walnut St,Suite 205, Boulder, CO 80301 USA
13.Univ Bristol, Sch Phys, Tyndall Ave, Bristol BS8 1TL, Avon, England
14.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
15.INAF Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy
Recommended Citation
GB/T 7714
Vito, F.,Brandt, W. N.,Lehmer, B. D.,et al. Chandra reveals a luminous Compton-thick QSO powering a Ly alpha blob in a z=4 starbursting protocluster[J]. ASTRONOMY & ASTROPHYSICS,2020,642:13.
APA Vito, F..,Brandt, W. N..,Lehmer, B. D..,Vignali, C..,Zou, F..,...&Spingola, C..(2020).Chandra reveals a luminous Compton-thick QSO powering a Ly alpha blob in a z=4 starbursting protocluster.ASTRONOMY & ASTROPHYSICS,642,13.
MLA Vito, F.,et al."Chandra reveals a luminous Compton-thick QSO powering a Ly alpha blob in a z=4 starbursting protocluster".ASTRONOMY & ASTROPHYSICS 642(2020):13.
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