Results 21 to 30 of about 9,619,877 (199)

Angular momenta of late-type spiral galaxies [PDF]

Symposium - International Astronomical Union, 1970
The angular momenta of galaxies may be evaluated from their photometry. The mass to light ratio in NGC 224 is discussed and the calculation is applied to two late-type spirals.
openaire   +1 more source

Continuous Filament Network of the Local Universe

The Astrophysical Journal, 2023
Simulated galaxy distributions are suitable for developing filament detection algorithms. However, samples of observed galaxies, being of limited size, cause difficulties that lead to a discontinuous distribution of filaments.
Anatoliy Tugay, Mariusz Tarnopolski
doaj   +1 more source

Early assembly of the most massive galaxies [PDF]

, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins, Scott T Kay (16045382), Nicola Mehrtens (16047884), Ed Lloyd-Davies, Hoyle, Ben, Hosmer, Mark, Christopher J. Miller, Ben Hoyle, Mehrtens, Nicola, Robert G. Mann, Pedro T. P. Viana, Martin Sahlén (267044), S Adam Stanford (16061237), Mark Hosmer (16070585), Robert C Nichol (16067396), John P Stott (16070582), Martin Sahlén, Sahlen, Martin, John P. Stott, Kathy Romer (4460893), Matt Hilton (6956609), Viana, Pedro T. P., Mann, Robert G., Ben Hoyle (6914513), Stott, John P., Matt Hilton, Robert G Mann (7965452), Andrew Liddle, Stanford, S. Adam, Christopher J Miller (16070591), A. Kathy Romer, Davidson, Michael, Ed Lloyd-Davies (16075100), Romer, A. Kathy, Robert C. Nichol, Andrew Liddle (16042793), Pedro T P Viana (16045379), Nichol, Robert C., Kay, Scott T., Michael J. West, Chris A Collins (16061234), Scott T. Kay, Collins, Chris A., Michael Davidson, Mark Hosmer, West, Michael J., Michael Davidson (699678), S. Adam Stanford, Michael J West (5524436), Liddle, Andrew, Nicola Mehrtens, Miller, Christopher J., Hilton, Matt, Lloyd-Davies, Ed   +53 more
core   +1 more source

Morphological Distribution of Galaxies in Some Nearby Clusters

Open Astronomy, 2019
We study the morphological distribution of galaxies in some nearby clusters, using the Sloan Digital Sky Survey – Data Release 9 (SDSS-DR9). The segregation between early-type galaxies and late-type ones is investigated in g – r / u – g color space ...
Rasheed Mariwan A., Mohammad Khalid K.
doaj   +1 more source

On the Progenitors of Type IA Supernovae in Early-Type and Late-Type Galaxies [PDF]

, 1994
An examination of recent observational material reveals substantial differences between supernovae of Type Ia (SNs Ia) in galaxies of different Hubble types. We propose that SNs Ia in late- and early-type galaxies may have different progenitors.
DELLA VALLE, Massimo, Livio, Mario, Mario Livio, Massimo della Valle   +3 more
core   +1 more source

Age-density relation of Main galaxies at fixed parameters or for different galaxy families

Open Physics, 2015
Using two volume-limited Main galaxy samples of the Sloan Digital Sky Survey Data Release 10 (SDSS DR10), we examine the environmental dependence of galaxy age at fixed parameters or for different galaxy families.
Deng Xin-Fa, Song Jun, Chen Yi-Qing, Jiang Peng, Ding Ying-Ping   +4 more
doaj   +1 more source

Secondary evolution of galaxies investigated by N-body simulations [PDF]

, 2008
In the ΛCDM cosmology, merging is one of the most important physical processes that drives the formation and evolution of galaxies. In the present work, we use N-body techniques to investigate some of currently open issues related to the formation and ...
Coppola, Giuseppina
core   +1 more source

Galaxy morphology classification: are stellar circularities enough? [PDF]

Serbian Astronomical Journal
We present a preliminary study exploring whether the stellar orbital circularity of simulated galaxies, available from precomputed catalogs in the IllustrisTNG project, can be used as a proxy for a broad morphological classification. We focus on
Baucalo Katarina, Mitrašinović Ana
doaj   +1 more source

A search for the most massive galaxies: double trouble? [PDF]

, 2005
We describe the results of a search for galaxies with large ({approx}> 350 kms{sup -1}) velocity dispersions. The largest systems we have found appear to be the extremes of the early-type galaxy population: compared to other galaxies with similar ...
York, D. G., Bernardi, Mariangela, Miller, C. J., Sheth, R., Subbarao, M., Schlegel, D., Brinkmann, J., Schneider, D. P., York, D., Schneider, D., Sheth, R. K., Miller, C., Bernardi, M., Nichol, Bob, Frieman, J., Nichol, R. C.   +15 more
core   +1 more source

The rotation curves shapes of late-type dwarf galaxies [PDF]

, 2008
We present rotation curves derived from Hi observations for a sample of 62 galaxies that have been observed as part of the Westerbork Hi Survey of Spiral and Irregular Galaxies (WHISP) project.
J. M. van der Hulst, Sancisi, R., van Albada, T. S., van der Hulst, J. M., R. A. Swaters, van der Hulst, J. M.; id_orcid, R. Sancisi, Swaters, R. A., T. S. van Albada   +8 more
core   +1 more source