J 2022

Host galaxy magnitude of OJ 287 from its colours at minimum light

VALTONEN, Mauri J.; Lankeswar DEY; Stanislaw ZOLA; S. CIPRINI; M. KIDGER et al.

Základní údaje

Originální název

Host galaxy magnitude of OJ 287 from its colours at minimum light

Autoři

VALTONEN, Mauri J.; Lankeswar DEY; Stanislaw ZOLA; S. CIPRINI; M. KIDGER; T. PURSIMO; A. GOPAKUMAR; K. MATSUMOTO; K. SADAKANE; D. B. CATON; K. NILSSON; S. KOMOSSA; M. BAGAGLIA; A. BARANSKY; P. BOUMIS; D. BOYD; A. J. CASTRO-TIRADO; B. DEBSKI; M. DROZDZ; A. E. PEREZE; M. FIORUCCI; F. GARCIA; K. GAZEAS; S. GHOSH; V. GODUNOVA; J. L. GOMEZ; R. GREDEL; D. GRUPE; J. B. HAISLIP; T. HENNING; G. HURST; Jan JANÍK ORCID; V. V. KOUPRIANOV; H. LEHTO; A. LIAKOS; S. MATHUR; M. MUGRAUER; R. N. NOGUES; G. NUCCIARELLI; W. OGLOZA; D. K. OJHA; U. PAJDOSZ-SMIERCIAK; S. PASCOLINI; G. POYNER; D. E. REICHART; N. RIZZI; F. RONCELLA; D. K. SAHU; A. SILLANPAA; A. SIMON; M. SIWAK; F. C. SOLDAN ALFARO; E. SONBAS; G. TOSTI; V. VASYLENKO; J. R. WEBB a P. ZIELINSKI

Vydání

Monthly Notices of the Royal Astronomical Society, MALDEN, WILEY, 2022, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 4.800

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/22:00126442

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

galaxies: active; BL Lacertae objects: general; BL Lacertae objects: individual: OJ 287; galaxies: bulges

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 6. 12. 2022 11:09, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

OJ 287 is a BL Lacertae type quasar in which the active galactic nucleus (AGN) outshines the host galaxy by an order of magnitude. The only exception to this may be at minimum light when the AGN activity is so low that the host galaxy may make quite a considerable contribution to the photometric intensity of the source. Such a dip or a fade in the intensity of OJ 287 occurred in 2017 November, when its brightness was about 1.75 mag lower than the recent mean level. We compare the observations of this fade with similar fades in OJ 287 observed earlier in 1989, 1999, and 2010. It appears that there is a relatively strong reddening of the B- V colours of OJ 287 when its V-band brightness drops below magnitude 17. Similar changes are also seen in V- R, V- I, and R- I colours during these deep fades. These data support the conclusion that the total magnitude of the host galaxy is V = 18.0 +/- 0.3, corresponding to M-K = -26.5 +/- 0.3 in the K-band. This is in agreement with the results, obtained using the integrated surface brightness method, from recent surface photometry of the host. These results should encourage us to use the colour separation method also in other host galaxies with strongly variable AGN. In the case of OJ 287, both the host galaxy and its central black hole are among the biggest known, and its position in the black hole mass-galaxy mass diagram lies close to the mean correlation.