Results 11 to 20 of about 176,075 (225)
The Local Galaxy Density and the Bars of Spiral Galaxies [PDF]
The Astrophysical Journal, 1993 Using a variety of parameters of local galaxy density, we have examined the effects of the environmental density on the presence of bar structures in spiral galaxies of various morphological types. For an extensive sample of nearby galaxies, listed in the ``Nearby Galaxies Catalogue'' (Tully, 1988a), we have found that the spirals characterized by a ...
GIURICIN G +3 more
arxiv +5 more sources
Nobeyama CO Atlas of Nearby Spiral Galaxies: Distribution of Molecular Gas in Barred and Non-barred Spiral Galaxies [PDF]
Publ.Astron.Soc.Jap.59:117-166,2007, 2007 The data from a CO(1 - 0) mapping survey of 40 nearby spiral galaxies performed with the Nobeyama 45-m telescope are presented. The criteria of the sample selection were (1) RC3 morphological type in the range Sa to Scd, (2) distance less than 25 Mpc, (3) inclination angle less than 79deg (RC3), (4) flux at 100 um higher than ~ 10 Jy, (5) spiral ...
Hiroyuki Nakanishi +9 more
arxiv +5 more sources
The abundance gradient of NGC1365: evidence for a recently formed bar in an archetypal barred spiral galaxy? [PDF]
, 1997 Emission-line optical spectrophotometry for 55 H ii regions in the prominent southern barred spiral galaxy NGC 1365 is presented. Nebular diagnostic diagrams such as (N ii)/(O ii) and (S ii)/(O ii) versus ((O ii) + (O iii))/Hshow that the H ii regions of
J. R. Roy, J. R. Walsh
openalex +3 more sources
The Distribution of Bar and Spiral Strengths in Disk Galaxies [PDF]
Astron.J.130:506-523,2005, 2005 The distribution of bar strengths in disk galaxies is a fundamental property of the galaxy population that has only begun to be explored. We have applied the bar/spiral separation method of Buta, Block, and Knapen to derive the distribution of maximum relative gravitational bar torques, Q_b, for 147 spiral galaxies in the statistically well-defined ...
Heikki Salo +3 more
arxiv +5 more sources
Formation Mechanisms for Spirals in Barred Galaxies [PDF]
Astron.Lett. 27 (2001) 421-439, 2000 We consider a scenario of formation of the spiral structure in barred galaxies. This scenario includes the new non-resonant mechanism of elongation of spirals, due to the characteristic behaviour of the gravitational potential beyond the principal spiral arms.
Evgenii V. Polyachenko +1 more
arxiv +5 more sources
Gas Streaming in Barred Spiral Galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1965 K. C. Freeman, L. Mestel
openalex +3 more sources
Pattern speeds in barred spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1988 Des simulations a N corps montrent comment la barre des galaxies SB tourne, se separe de la structure spirale, la rattrappe et se connecte de nouveau au bras spiraux. Cela provient de vitesses de rotation differentes pour la barre et les bras spiraux.
J. A. Sellwood, L. S. Sparke
openalex +4 more sources
Star Formation Activity of Barred Spiral Galaxies [PDF]
The Astrophysical Journal, 2017 Abstract We study the star formation activity of nearby galaxies with bars using a sample of late-type galaxies at and from the Sloan Digital Sky Survey.
Eunbin Kim +6 more
openalex +6 more sources
Detecting a disk bending wave in a barred-spiral galaxy at redshift 4.4 [PDF]
Monthly notices of the Royal Astronomical Society, 2023 The recent discovery of barred spiral galaxies in the early universe (z > 2) poses questions of how these structures form and how they influence galaxy evolution in the early universe.
T. Tsukui +6 more
semanticscholar +1 more source
Herschel and Odin observations of H2O, CO, CH, CH+, and [N II] in the barred spiral galaxy NGC 1365 [PDF]
Astronomy & Astrophysics, 2021 Context. The Odin satellite is now into its twentieth year of operation, much surpassing its design life of two years. One of its major astronomical pursuits was the search for and study of water vapor in diverse regions of the Solar System and the Milky
A. Sandqvist +5 more
semanticscholar +1 more source