Research output: Contribution to journal › Article › peer-review
We present and analyze spectroscopic and photometric observations for NGC 2685, the prototype polar-ring galaxy. The spectroscopic data were acquired using the 6 m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences with the UAGS spectrograph and a scanning Fabry-Perot interferometer, while the photometric analysis was based on images from the Hubble Space Telescope archive. We demonstrate that the subsystem usually called the "inner polar ring" is a highly inhomogeneous gas and dust disk rotating approximately in the polar plane relative to the galaxy's main body. When the self-absorption in the disk is taken into account, a comparison of its color indices with those from model computations of the color evolution of galaxies results in an age for the disk of about 1.4 × 109 years, much lower than the previously accepted estimate.
Original language | English |
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Pages (from-to) | 958-966 |
Number of pages | 9 |
Journal | Astronomy Reports |
Volume | 49 |
Issue number | 12 |
DOIs | |
State | Published - 27 Dec 2005 |
ID: 40869156