A candidate optically quiescent quasar lacking narrow emission lines
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00548007" target="_blank" >RIV/67985815:_____/21:00548007 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1093/mnrasl/slab019" target="_blank" >https://doi.org/10.1093/mnrasl/slab019</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnrasl/slab019" target="_blank" >10.1093/mnrasl/slab019</a>
Alternative languages
Result language
angličtina
Original language name
A candidate optically quiescent quasar lacking narrow emission lines
Original language description
We seek to formalize this subpopulation of AGN with a prototypical candidate, SDSS J075139.06+402810.9. This shows infrared (IR) colours typical for AGN, an optical spectrum dominated by an early type galaxy continuum, an [Om] lambda 5007 angstrom limiting flux about two dex below Type 2 quasars at similar IR power, and a k-corrected 12 mu m quasar-like luminosity of similar to 10(45) erg s(-1). These characteristics are not consistent with jet and host galaxy dilution. A potential scenario to explain this AGN quiescence in the optical is a sky-covering 'cocoon' of obscuring material, such that the AGN ionizing radiation is unable to escape and excite gas on kpc scales. Alternatively, we may be witnessing the short phase between recent triggering of obscured AGN activity and the subsequent narrow-line excitation. This prototype could define the base properties of an emerging candidate AGN subtype - an intriguing transitional phase in AGN and galaxy evolution.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GJ19-05599Y" target="_blank" >GJ19-05599Y: Unification of Black Holes across the Mass Scale</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
503
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
5
Pages from-to
"L80"-"L84"
UT code for WoS article
000662147000013
EID of the result in the Scopus database
2-s2.0-85105193099