Results 61 to 70 of about 6,480 (173)
Formation of the Dark Matter–Deficient S0 Galaxy NGC 4111 under the Tidal Interactions
The Astrophysical Journal LettersWe present high-sensitivity and large-scale atomic hydrogen (H i ) observations toward lenticular (S0) galaxy NGC 4111 using the Five-hundred-meter Aperture Spherical Radio Telescope.
Mei Ai +10 more
doaj +1 more source
Disk Growth in Bulge-Dominated Galaxies: Molecular Gas and Morphological Evolution
, 2007 Substantial numbers of morphologically regular early-type (elliptical and lenticular) galaxies contain molecular gas, and the quantities of gas are probably sufficient to explain recent estimates of the current level of star formation activity.
Alison Crocker +5 more
core +1 more source
Effect of bars on the galaxy properties
, 2016 Aims: With the aim of assessing the effects of bars on disc galaxy properties, we present an analysis of different characteristics of spiral galaxies with strong, weak and without bars.
Alonso, Sol +2 more
core +1 more source
The Globular Cluster Populations of Giant Galaxies: Mosaic Imaging of Five Moderate-Luminosity Early-Type Galaxies [PDF]
, 2012 This paper presents results from wide-field imaging of the globular cluster (GC) systems of five intermediate-luminosity (M_V ~-21 to -22) early-type galaxies.
Hargis, Jonathan R., Rhode, Katherine L.
core +3 more sources
Star formation histories of dwarf lenticular galaxies
Monthly Notices of the Royal Astronomical SocietyABSTRACT Star formation histories (SFHs) are essential for understanding galaxy formation and evolution. We present the mean SFHs of 148 dwarf lenticular galaxies (dS0s) derived from the Sloan Digital Sky Survey spectra. These SFHs reveal two distinct periods of active star formation. The first period, concluding approximately 6 Gyr ago,
Hong Bae Ann, Mira Seo
openaire +2 more sources
Star Formation in the Lopsided Galaxy Arp 291
The Astrophysical JournalWe have investigated the star formation process taking place in the lopsided galaxy Arp 291, based on narrowband images in the H α , [N ii ] λ 6583, and [O iii ] λ 5007 emission lines, obtained using the modern tunable photometer MaNGaL at the Caucasus ...
Irina S. Proshina, Dmitriy V. Oparin
doaj +1 more source
The lenticular galaxy NGC3607: stellar population, metallicity and ionised gas [PDF]
, 2009 In this work we derive clues to the formation scenario and ionisation source of the lenticular galaxy NGC 3607 by means of metallicity gradients, stellar population and emission lines properties.
Annibali +35 more
core +2 more sources
, 2009 The data collected in the Shapley-Ames catalog of bright galaxies show that lenticular (S0) galaxies are typically about a magnitude fainter than both elliptical (E) and early spiral (Sa) galaxies.
Hubble +5 more
core +1 more source
Stellar Populations in Nearby Lenticular Galaxies
The Astrophysical Journal, 2006 We have obtained 2D spectral data for a sample of 58 nearby S0 galaxies with the Multi-Pupil Spectrograph of the 6m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences. The Lick indices H-beta, Mgb, and are calculated separately for the nuclei and for the bulges taken as the rings between R=4" and 7"; and the ...
openaire +2 more sources
Inner Polar Rings in Regular Lenticular Galaxies
The Astronomical Journal, 2004 We have investigated a sample of S0 galaxies, mostly with circumnuclear dust lanes orthogonal to their major axes, chosen from Hubble Space Telescope Wide Field Planetary Camera 2 images. Two-dimensional spectroscopy undertaken with the Multipupil Fiber Spectrograph of the 6 m telescope of the Special Astrophysical Observatory of the Russian Academy of
O. K. Sil'chenko, V. L. Afanasiev
openaire +1 more source