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Observational insights on the formation scenarios of giant low surfacebrightness galaxiesстатья
- Авторы: Saburova A., Chilingarian I., Kasparova A., Sil’chenko O., Katkov I., Grishin K., Uklein R.
- Сборник: Proceedings of the VAK-2021 conference
- Год издания: 2021
- Место издания: Moscow
- Первая страница: 374
- Последняя страница: 376
- Аннотация: Giant low surface brightness galaxies (gLSBGs) with the disk radii of up to 130 kpc represent a challenge for currently accepted theories of galaxy formation and evolution, because it is difficult to build-up such large dynamically cold systems via mergers preserving extended disks. We summarize the in-depth study of the sample of 7 gLSBGs based on the results of the performed spectral long-slit observations at BTA SAO RAS, surface photometry and Hi data available in literature. Our study revealed that most gLSBGs do not deviate from the Tully-Fisher relation. We discovered compact elliptical (cE) satellites in 2 out these 7 galaxies. Provided the low statistical frequencies of gLSBGs and cEs, the chance alignment is improbable, so it can indicate that gLSBGs and cE are evolutionary connected and gives evidence in favor of the majormerger formation scenario. Other formation paths of gLSBGs are also discussed.
- Добавил в систему: Сабурова Анна Станиславовна