Zobrazeno 1 - 10
of 832
pro vyhledávání: '"Sil'chenko AS"'
We have fulfilled a detailed long-slit spectroscopic analysis for two SB0 galaxies -- NGC 1533 and NGC 1543, -- belonging to the Dorado group. Our spectral data reveal asymmetric decoupled kinematics of the stars and ionised gas in these barred lenti
Externí odkaz:
http://arxiv.org/abs/2405.15363
Autor:
Katkov, Ivan, Gasymov, Damir, Kniazev, Alexei, Gelfand, Joseph, Rubtsov, Evgenii, Chilingarian, Igor, Sil'chenko, Olga
Stellar counter-rotation in disk galaxies directly relates to the complex phenomenon of the disk mass assembly believed to be driven by external processes, such as accretion and mergers. The detailed study of such systems makes it possible to reveal
Externí odkaz:
http://arxiv.org/abs/2305.01719
The new observational data concerning distribution, excitation, and kinematics of the ionized gas in the giant early-type disk galaxy NGC 2655 obtained at the 6m telescope of the Special Astrophysical Observatory (SAO RAS) and at the 2.5m telescope o
Externí odkaz:
http://arxiv.org/abs/2301.05326
Though S0 galaxies are usually thought to be `red and dead', they often demonstrate weak star formation organised in ring structures and located in their outer disks. We try to clarify the nature of this phenomenon and its difference from star format
Externí odkaz:
http://arxiv.org/abs/2212.08951
Publikováno v:
Astronomy Letters, Vol. 48, No. 3, pp. 139-152, 2022
We present the results of our study of starforming regions in the lenticular galaxy NGC 4324. During a complex analysis of multiwavelength observational data -- the narrow-band emission-line images obtained with the 2.5-m telescope at the Caucasus Mo
Externí odkaz:
http://arxiv.org/abs/2210.07786
Autor:
Saburova, Anna, Chilingarian, Igor, Kasparova, Anastasia, Sil'chenko, Olga, Katkov, Ivan, Grishin, Kirill, Uklein, Roman
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 m
Externí odkaz:
http://arxiv.org/abs/2112.10731
Publikováno v:
A&A 658, A154 (2022)
Although S0 galaxies are usually considered "red and dead", they often demonstrate star formation organized into ring structures. We aim to clarify the nature of this phenomenon and how it differs from star formation in spiral galaxies. We investigat
Externí odkaz:
http://arxiv.org/abs/2112.03289
Autor:
Sil'chenko, Olga K.
This is a historical review covering the last 30 years of the observational study of lenticular galaxies at the 6m telescope BTA of the Special Astrophysical Observatory of the Russian Academy of Sciences. The development of spectroscopic techniques
Externí odkaz:
http://arxiv.org/abs/2011.02564
Autor:
Saburova, Anna, Chilingarian, Igor, Kasparova, Anastasia, Sil'chenko, Olga, Grishin, Kirill, Katkov, Ivan, Uklein, Roman
Giant low surface brightness galaxies (gLSBGs) with dynamically cold stellar discs reaching the radius of 130 kpc challenge currently considered galaxy formation mechanisms. We analyse new deep long-slit optical spectroscopic observations, archival o
Externí odkaz:
http://arxiv.org/abs/2011.01238
We present our results of the spectroscopic study of the lenticular galaxy NGC 4143 - an outskirt member of the Ursa Major cluster. Using the observations at the 6-m SAO RAS telescope with the SCORPIO-2 spectrograph and also the archive data of panor
Externí odkaz:
http://arxiv.org/abs/2009.00126