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相关论文: Decoupled gas kinematics in isolated S0 galaxies

200 篇论文

We present the first systematic investigation of the existence, spatial distribution, and kinematics of warm ionized gas as traced by the [O II] 3727AA emission line in 74 of the most massive galaxies in the local Universe. All of our…

Gas loss is thought to be important in SF quenching and morphological transition during the evolution of S0 galaxies. In high density environments, gas loss can be achieved via many external mechanisms. However, in relatively isolated…

宇宙学与河外天体物理 · 物理学 2015-05-28 Jiang-Tao Li , Q. Daniel Wang , Zhiyuan Li , Yang Chen

We used deep long-slit spectra and integral-field spectral data to study the stars and ionized gas kinematics and stellar population properties in the lenticular barred galaxy NGC 7743. We have shown that ionized gas at the distances larger…

宇宙学与河外天体物理 · 物理学 2015-05-28 Ivan Yu. Katkov , Alexei V. Moiseev , Olga K. Sil'chenko

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…

星系天体物理 · 物理学 2023-01-18 O. Sil'chenko , A. Moiseev , D. Oparin , J. E. Beckman , J. Font

In early type galaxies, externally accreted gas is thought to be the main source of gas replenishment at late times. We use MUSE integral field spectroscopy data to study the active S0 galaxy NGC 5077, known to have disturbed dynamics,…

星系天体物理 · 物理学 2021-06-09 Sandra I. Raimundo

We investigate the kinematics of the molecular gas in a sample of seven edge-on (i>60{\deg}) galaxies identified as hosting large-scale outflows of ionised gas, using ALMA CO(1-0) observations at ~ 1kpc resolution. We build on Hogarth et…

星系天体物理 · 物理学 2022-11-09 Lucy M. Hogarth , Amelie Saintonge , Tim A. Davis

Spectroscopic observations of three lenticular (S0) galaxies (NGC 1167, NGC 4150, and NGC 6340) and one SBa galaxy (NGC 2273) have been taken with the 6-m telescope of the Special AstrophysicalObservatory of the Russian Academy of Sciences…

天体物理学 · 物理学 2009-11-13 A. V. Zasov , A. V. Moiseev , A. V. Khoperskov , E. A. Sidorova

We report the results of multicolour observations of 30 E/S0 galaxies with dust lanes. For each galaxy we obtained broad-band images and narrow-band images using interference filters isolating the H\alpha +[NII] emission lines to derive the…

宇宙学与河外天体物理 · 物理学 2015-05-19 Ido Finkelman , Noah Brosch , José G. Funes S. J. , Alexei Y. Kniazev , Petri Väisänen

We present the stellar and ionized gas kinematics of 13 bright peculiar Virgo cluster galaxies observed with the DensePak Integral Field Unit at the WIYN 3.5-meter telescope, to seek kinematic evidence that these galaxies have experienced…

星系天体物理 · 物理学 2015-06-23 J. R. Cortés , J. D. P. Kenney , E. Hardy

We present a comparison between ionized gas and stellar kinematics for a sample of 5 early-to-intermediate disk galaxies. We measured the major axis V and velocity dispersion radial profiles for both gas and stars, and the h_3 and h_4…

The kinematics of stars and ionized gas has been studied near the center of the S0 galaxy NGC 4036. Dynamical models based both on stellar photometry and kinematics have been built in order to derive the gravitational potential in which the…

天体物理学 · 物理学 2007-05-23 E. M. Corsini , F. Bertola , M. Sarzi , P. Cinzano , H. -W. Rix , W. W. Zeilinger

This work is dedicated to investigation of galaxies that do not fit into a common scenario of galaxy formation - isolated lenticular galaxies. We have studied stellar populations and ionized gas content of a sample of 22 lenticular galaxies…

星系天体物理 · 物理学 2014-03-18 Ivan Yu. Katkov

The ionization state and oxygen abundance distribution in a sample of polar-ring galaxies (PRGs) were studied from the long-slit spectroscopic observations carried out with the SCORPIO-2 focal reducer at the Russian 6-m telescope. The…

星系天体物理 · 物理学 2019-04-24 Oleg V. Egorov , Alexei V. Moiseev

We present the ionized-gas kinematics and photometry of a sample of 4 spiral galaxies which are characterized by a zero-velocity plateau along the major axis and a velocity gradient along the minor axis, respectively. By combining these new…

天体物理学 · 物理学 2009-11-10 L. Coccato , E. M. Corsini , A. Pizzella , L. Morelli , J. G. Funes , F. Bertola

We present spatially-resolved measurements of the ionized gas masses and mass outflow rates for six low-redshift ($z \leq$ 0.02) active galaxies. In this study, we expand our sample to galaxies with more complex gas kinematics modeled as…

Very little work has been done on star formation in dwarf lenticular galaxies (S0s). We present 2D-spectroscopic and millimetre observations made by Centro Astronomico Hispano Aleman (CAHA) 3.5 m optical and the IRAM-30 m millimetre…

星系天体物理 · 物理学 2021-09-22 Xue Ge , Qiu-Sheng Gu , Ruben Garcıa-Benito , Shi-Ying Lu , Cheng-Long Lei , Nan Ding

We have obtained data for 41 star forming galaxies in the MUSE Atlas of Disks (MAD) survey with VLT/MUSE. These data allow us, at high resolution of a few 100 pc, to extract ionized gas kinematics ($V, \sigma$) of the centers of nearby star…

Isolated galaxies are rare yet invaluable for studying secular evolution, as their physical properties can remain largely unaffected by external influences for several billion years, primarily shaped by internal evolutionary processes. This…

We present the detection of molecular gas from galaxies located in nearby voids using the CO line emission as a tracer. The observations were done using the 45m Nobeyama Radio Telescope. Void galaxies lie in the most under dense parts of…

星系天体物理 · 物理学 2015-12-16 M. Das , T. Saito , D. Iono , M. Honey , S. Ramya