Optical and radio studies of radio sources

Afanasiev, V. L.; Додонов, С. Н.; Моисеев, А. В.; Chavushyan, V.; Mújica, R.; Juárez, Yectivani; Gorshkov, A. G.; Konnikova, V. K.; Мингалиев, М. Г.

doi:10.1134/1.1607495

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Observations and Data Reduction1

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2004

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“…We performed our spectroscopic observations of the galaxy NGC 7468 at the prime focus of the 6 -m Special Astrophysical Observatory (SAO) telescope with the longslit spectrograph (UAGS), the multipupil fiber spectrograph (MPFS) (Afanasiev et al 2001), and the scanning Fabry-Perot interferometer (IFP) (see Moiseev (2002) and the SAO WWW-site 1 ). The table 1 gives a log of observations.…”

Section: Observations and Data Reductionmentioning

confidence: 99%

NGC 7468: A galaxy with an inner polar disk

Shalyapina¹,

Моисеев

Yakovleva³

et al. 2004

Astron. Lett.

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Abstract. We present our spectroscopic observations of the galaxy NGC 7468 performed at the 6-m Special Astrophysical Observatory telescope using the UAGS long-slit spectrograph, the multipupil fiber spectrograph MPFS, and the scanning Fabry-Perot interferometer (IFP). We found no significant deviations from the circular rotation of the galactic disk in the velocity field in the regions of brightness excess along the major axis of the galaxy (the putative polar ring). Thus, these features are either tidal structures or weakly developed spiral arms. However, we detected a gaseous disk at the center of the galaxy whose rotation plane is almost perpendicular to the plane of the galactic disk. The central collision of NGC 7468 with a gas-rich dwarf galaxy and their subsequent merging seem to be responsible for the formation of this disk.

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Section: Observations and Data Reductionmentioning

confidence: 99%