J 2023

SDSS-FIRST-selected interacting galaxies Optical long-slit spectroscopy study using MODS at the LBT

MISQUITTA, Persis, Andreas ECKART, Michal ZAJAČEK a Madeleine YTTERGREN

Základní údaje

Originální název

SDSS-FIRST-selected interacting galaxies Optical long-slit spectroscopy study using MODS at the LBT

Autoři

MISQUITTA, Persis, Andreas ECKART, Michal ZAJAČEK (703 Slovensko, domácí) a Madeleine YTTERGREN

Vydání

Astronomy and Astrophysics, EDP Sciences, 2023, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 6.500 v roce 2022

Kód RIV

RIV/00216224:14310/23:00134167

Organizační jednotka

Přírodovědecká fakulta

DOI

UT WoS

000945283300004

Klíčová slova anglicky

galaxies; interactions; active; kinematics and dynamics; starburst; evolution; nuclei

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 14. 7. 2023 13:39, Mgr. Marie Šípková, DiS.

Anotace

V originále

Context. In the hierarchical model of evolution of the Universe, galaxy mergers play an important role, especially at high redshifts. Interactions among galaxies appear to be associated with incidences of radio-loudness in quasars and it is of interest to study the galaxies that are in the process of interacting with each other, where there is at least one nucleus that is active in the radio regime.Aims. In order to understand the various processes taking place within colliding galaxies, it is important to study the radio and optical properties of these sources, as well as any possible correlations that might exist. Methods. To this end, we present optical long-slit spectroscopy data for ten pairs of interacting galaxies selected from SDSS-FIRST at redshifts of similar to 0.05, observed using the multi-object double spectrographs at the Large Binocular Telescope.Results. We used line fluxes extracted from the spectra of the nuclear regions of galaxies to plot optical diagnostic diagrams and estimate the masses of the central supermassive black holes, as well as their Eddington ratios. Additionally, we used previously published Effelsberg radio telescope data at 4.85 GHz and FIRST survey data at 1.4 GHz to estimate radio spectral slopes and the radio-loudness parameters for all of the radio-detected sources. We also used WISE data to plot a mid-infrared colour-colour diagram. Conclusions. We see that while the sample of galaxies covers all of the classes on the optical diagnostic diagrams, the sources that are radio-detected fall in the composite or transition region of the diagram. Additionally, we notice a trend of the highest radio-loudness parameter in a pair of interacting galaxies being associated with the galaxy that hosts the more massive central supermassive black hole. We do not see any obvious trends with respect to the radio spectral slope, radio-loudness parameter, and Eddington ratio. With respect to the mid-infrared data of the galaxies detected by WISE, we see that most of them have some type of contribution from star formation, however, two of them seem to have a significant contribution from an AGN as well.

Návaznosti

GF23-04053L, projekt VaV
Název: Role mraků při využití zpoždění kontinua v aktivních galaxiích k měření rychlosti rozpínání vesmíru
Investor: Grantová agentura ČR, Weather effects in using disk continuum time delays in active galactic nuclei to measure the expansion rate of the Universe / Role mraků při využití zpoždění kontinua v aktivních galaxiích k měření rychlosti rozpínání vesmíru, Partnerská agentura (Polsko)