Results 51 to 60 of about 476,460 (296)

The History of Galaxies and Galaxy Number Counts [PDF]

, 1997
(Abridged) A simple quantitative model is presented for the history of galaxies to explain galaxy number counts, redshift distributions and some other related observations. We first infer that irregular galaxies and the disks of spiral galaxies are young,
Abraham R. G., Arimoto N., Arimoto N., Babul A., Broadhurst T. J., Cole S., Colless M., Colless M., Couch W. J., Efstathiou G., Ellis R. S., Glazebrook K., Glazebrook K., Glazebrook K., Guiderdoni B., Jones L. R., K. Shimasaku, Kauffmann G., M. Fukugita, Madau P., Maddox S. J., Metcalfe N., Metcalfe N., Mobasher B., Persic M., Phillipps S., Sandage A., Smith L. F., Storrie-Lombardi L. J., van der Marel R.   +29 more
core   +3 more sources

Spatial clustering in the ESO-Sculptor Survey: two-point correlation functions by galaxy type at redshifts 0.1 - 0.5 [PDF]

, 2007
We calculate the spatial two-point auto and cross-correlation functions for the 765 galaxies with ...
Abazajian, Abbas, Andreon, Arnouts, Baldi, Baugh, Bellanger, Bellanger, Benoist, Benson, Benson, Berlind, Berlind, Bernstein, Binggeli, Blanton, Brainerd, Bromley, Budavári, Carlberg, Coil, Coil, Cole, Colless, Conroy, Cooray, Courteau, Davis, Davis, de Lapparent, de Lapparent, de Lapparent, de Lapparent, Dressler, Díaz, E. Slezak, Efstathiou, Ekholm, Ferguson, Fioc, Fisher, Folkes, Galaz, Giuricin, Grant, Guzzo, Hamilton, Hawkins, Hermit, Hogg, Jenkins, Jerjen, Jing, Kauffmann, Kauffmann, Kennicutt, Kerscher, Landy, Le Fevre, Li, Lilly, Lin, Ling, Loveday, Loveday, Loveday, Madgwick, Magliocchetti, Masjedi, Maurogordato, Meneux, Navarro, Norberg, Park, Pearce, Perlmutter, Phillips, Phleps, Phleps, Pollo, Pons-Bordería, Postman, Ramella, Ratcliffe, Ratcliffe, Ratcliffe, Riess, Saunders, Schechter, Shectman, Shepherd, Small, Small, Smoot, Tonry, Trentham, Trentham, Trentham, Tucker, V. de Lapparent, Weinmann, Willmer, Yahil, Yang, Yang, Yang, Yang, Yang, Yang, Yoshida, Zandivarez, Zehavi, Zehavi, Zehavi, Zheng   +114 more
core   +4 more sources

The Global Schmidt law in star forming galaxies [PDF]

, 1997
Measurements of Hα, H I, and CO distributions in 61 normal spiral galaxies are combined with published far-infrared and CO observations of 36 infrared-selected starburst galaxies, in order to study the form of the global star formation law over the full ...
J. Kennicutt, J. Kennicutt
semanticscholar   +1 more source

Barred Spiral Galaxies [PDF]

Symposium - International Astronomical Union, 1970
We point out some properties of barred spiral galaxies which are important for the theory of their formation and spiral structure, and describe some theoretical work on the dynamics of these systems.
openaire   +2 more sources

The optical polarization of spiral galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2000
Scattering of starlight by dust, molecules and electrons in spiral galaxies will produce a modification of the direct intensity and a polarization in the observed light. We treat the case where the distribution of scatterers can be considered to be optically thin, and derive semi-analytic expressions for the resolved intensity and polarized intensity ...
Edouard Audit, John F. L. Simmons
openaire   +4 more sources

NUMERICAL MODELLING OF GAS DYNAMIC STRUCTURES IN SPIRAL GALAXIES

Odessa Astronomical Publications, 2013
Observations show that in the global morphology of spiral galaxies appear and form multi-scale features that are embedded in a complex complete picture of the galaxy.
A. Lugovskiy, E. Filistov
doaj   +1 more source

MAGNETIC FIELDS IN A SAMPLE OF NEARBY SPIRAL GALAXIES [PDF]

, 2014
Both observations and modeling of magnetic fields in the diffuse interstellar gas of spiral galaxies are well developed, but the theory has been confronted with observations for only a handful of individual galaxies.
Cameron Van Eck, Jo-Anne C. Brown, A. Shukurov, A. Fletcher   +3 more
semanticscholar   +1 more source

Galactic Density and Evolution Based on the Virial Theorem, Energy Minimization, and Conservation of Angular Momentum

Galaxies, 2018
Spiral galaxies are spinning, internally densified objects. The Virial Theorem explains galactic rotation curves via its linkage of the rotation rate to the gravitational self-potential (Ug) and the moment of inertia of oblate spheroids.
Robert E. Criss, Anne M. Hofmeister
doaj   +1 more source

SPIN ALIGNMENTS OF SPIRAL GALAXIES WITHIN THE LARGE-SCALE STRUCTURE FROM SDSS DR7 [PDF]

, 2014
Using a sample of spiral galaxies selected from the Sloan Digital Sky Survey Data Release 7 and Galaxy Zoo 2, we investigate the alignment of spin axes of spiral galaxies with their surrounding large-scale structure, which is characterized by the large ...
Youcai Zhang, Xiaohu Yang, Xiaohu Yang, Huiyuan Wang, Huiyuan Wang, Lei Wang, Wentao Luo, H. Mo, F. V. D. Bosch   +8 more
semanticscholar   +1 more source

The HI Halo of Spiral Galaxies

Astrophysics and Space Science, 2004
The results of observational studies on the vertical HI density distribution and kinematics of the disks of spiral galaxies are reported and discussed. Attention is drawn to the presence of HI emission, unknown before and here referred to as the `beard', which has anomalous structure and kinematics, different from the known cold HI disk. This component
Gustaaf van Moorsel, Filippo Fraternali, Renzo Sancisi, Tom Oosterloo   +3 more
openaire   +6 more sources