A Transient “Changing-look” Active Galactic Nucleus Resolved on Month Timescales from First-year Sloan Digital Sky Survey V Data
dc.bibliographicCitation.firstPage | L16 | |
dc.bibliographicCitation.issue | 1 | |
dc.bibliographicCitation.volume | 939 | |
dc.contributor.author | Zeltyn, Grisha | |
dc.contributor.author | Trakhtenbrot, Benny | |
dc.contributor.author | Eracleous, Michael | |
dc.contributor.author | Runnoe, Jessie | |
dc.contributor.author | Trump, Jonathan R. | |
dc.contributor.author | Stern, Jonathan | |
dc.contributor.author | Shen, Yue | |
dc.contributor.author | Hernández-García, Lorena | |
dc.contributor.author | Bauer, Franz E. | |
dc.contributor.author | Yang, Qian | |
dc.contributor.author | Dwelly, Tom | |
dc.contributor.author | Ricci, Claudio | |
dc.contributor.author | Green, Paul | |
dc.contributor.author | Anderson, Scott F. | |
dc.contributor.author | Assef, Roberto J. | |
dc.contributor.author | Guolo, Muryel | |
dc.contributor.author | MacLeod, Chelsea | |
dc.contributor.author | Davis, Megan C. | |
dc.contributor.author | Fries, Logan | |
dc.contributor.author | Gezari, Suvi | |
dc.contributor.author | Grogin, Norman A. | |
dc.contributor.author | Homan, David | |
dc.contributor.author | Koekemoer, Anton M. | |
dc.contributor.author | Krumpe, Mirko | |
dc.contributor.author | LaMassa, Stephanie | |
dc.contributor.author | Liu, Xin | |
dc.contributor.author | Merloni, Andrea | |
dc.contributor.author | Martínez-Aldama, Mary Loli | |
dc.contributor.author | Schneider, Donald P. | |
dc.contributor.author | Temple, Matthew J. | |
dc.contributor.author | Brownstein, Joel R. | |
dc.contributor.author | Ibarra-Medel, Hector | |
dc.contributor.author | Burke, Jamison | |
dc.contributor.author | Pellegrino, Craig | |
dc.contributor.author | Kollmeier, Juna A. | |
dc.date.accessioned | 2023-02-06T08:02:53Z | |
dc.date.available | 2023-02-06T08:02:53Z | |
dc.date.issued | 2022 | |
dc.description.abstract | We report the discovery of a new “changing-look” active galactic nucleus (CLAGN) event, in the quasar SDSS J162829.17+432948.5 at z = 0.2603, identified through repeat spectroscopy from the fifth Sloan Digital Sky Survey (SDSS-V). Optical photometry taken during 2020-2021 shows a dramatic dimming of Δg ≈ 1 mag, followed by a rapid recovery on a timescale of several months, with the ≲2 month period of rebrightening captured in new SDSS-V and Las Cumbres Observatory spectroscopy. This is one of the fastest CLAGN transitions observed to date. Archival observations suggest that the object experienced a much more gradual dimming over the period of 2011-2013. Our spectroscopy shows that the photometric changes were accompanied by dramatic variations in the quasar-like continuum and broad-line emission. The excellent agreement between the pre- and postdip photometric and spectroscopic appearances of the source, as well as the fact that the dimmest spectra can be reproduced by applying a single extinction law to the brighter spectral states, favor a variable line-of-sight obscuration as the driver of the observed transitions. Such an interpretation faces several theoretical challenges, and thus an alternative accretion-driven scenario cannot be excluded. The recent events observed in this quasar highlight the importance of spectroscopic monitoring of large active galactic nucleus samples on weeks-to-months timescales, which the SDSS-V is designed to achieve. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/11248 | |
dc.identifier.uri | http://dx.doi.org/10.34657/10284 | |
dc.language.iso | eng | |
dc.publisher | London : Institute of Physics Publ. | |
dc.relation.doi | https://doi.org/10.3847/2041-8213/ac9a47 | |
dc.relation.essn | 2041-8213 | |
dc.relation.ispartofseries | The Astrophysical Journal Letters 939 (2022), Nr. 1 | eng |
dc.relation.issn | 2041-8205 | |
dc.rights.license | CC BY 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0 | |
dc.subject | Supermassive black holes | eng |
dc.subject | Quasars | eng |
dc.subject | Active galactic nuclei | eng |
dc.subject | Transient sources | eng |
dc.subject.ddc | 520 | |
dc.title | A Transient “Changing-look” Active Galactic Nucleus Resolved on Month Timescales from First-year Sloan Digital Sky Survey V Data | eng |
dc.type | article | |
dc.type | Text | |
dcterms.bibliographicCitation.journalTitle | The Astrophysical Journal Letters | |
local.doifilter.override | ja | |
tib.accessRights | openAccess | |
wgl.contributor | AIP | |
wgl.subject | Physik | ger |
wgl.type | Zeitschriftenartikel | ger |
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