Results 21 to 30 of about 30,270 (299)

Implications of the Milky Way Travel Velocity for Dynamical Mass Estimates of the Local Group

The Astrophysical Journal, 2022
The total mass of the Local Group (LG) is a fundamental quantity that enables interpreting the orbits of its constituent galaxies and placing the LG in a cosmological context.
Katie Chamberlain, Adrian M. Price-Whelan, Gurtina Besla, Emily C. Cunningham, Nicolás Garavito-Camargo, Jorge Peñarrubia, Michael S. Petersen   +6 more
doaj   +1 more source

Galaxy groups in the 2dF Galaxy Redshift Survey: galaxy spectral type segregation in groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
3 figures replaced, accepted for publication in ...
Dominguez, M. J., Zandivarez, A. A., Martinez, H. J., Merchan, M. E., Muriel, H., Lambas, D. G.   +5 more
openaire   +2 more sources

The 2dF Galaxy Redshift Survey: the clustering of galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
16 pages.
Padilla, Nelson D., Baugh, Carlton M., Eke, Vincent R., Norberg, Peder, Cole, Shaun, Frenk, Carlos S., Croton, Darren, Baldry, Ivan K., Bland-Hawthorn, Joss, Bridges, Terry, Cannon, Russell, Colless, Matthew, Collins, Chris, Couch, Warrick, Dalton, Gavin, De Propris, Roberto, Driver, Simon P., Efstathiou, George, Ellis, Richard S., Glazebrook, Karl, Jackson, Carole, Lahav, Ofer, Lewis, Ian, Lumsden, Stuart, Maddox, Steve, Madgwick, Darren, Peacock, John A., Peterson, Bruce A., Sutherland, Will, Taylor, Keith   +29 more
openaire   +6 more sources

Searches for ultracompact dwarf galaxies in galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
8 pages, 2 figures, accepted for publication in ...
Evstigneeva, E. A., Drinkwater, M. J., Jurek, R., Firth, P., Jones, J. B., Gregg, M. D., Phillipps, S.   +6 more
openaire   +4 more sources

Isolated Galaxies, Pairs and Groups of Galaxies [PDF]

International Astronomical Union Colloquium, 1990
We searched for isolated galaxies, pairs and groups of galaxies in the CfA survey (Huchra et al. 1983). It was assumed that the distances to galaxies are given by R = V/H0, where H0 = 100 km s−1 Mpc−1 and R> 6 Mpc.
I. Kuneva, M. Kalinkov
openaire   +1 more source

The Evolution of Galaxy Groups and of Galaxies Therein [PDF]

, 2007
Properties of groups of galaxies depend sensitively on the algorithm for group selection, and even the most recent catalogs of groups built from redshift-space selection should suffer from projections and infalling galaxies. The cosmo-dynamical evolution of groups from initial Hubble expansion to collapse and virialization leads to a fundamental track (
openaire   +3 more sources

The Orientation of Galaxies in Nearby Galaxy Groups [PDF]

Symposium - International Astronomical Union, 2004
The statistical analysis of six nearby groups of galaxies, connected with the Milky Way, M31, M81, M101, NGC5128 and NGC5236 shows an isotropic distribution of galaxy planes, similarly to galaxies within the Local Group. Also planes of galaxies in the nearby (Vr < 500 km s−1) region of the Local Supercluster exhibit random distribution, disregarding
P. Flin, M. Biernacka, J. Krywult
openaire   +1 more source

Probing the intra-group medium of a z=0.28 galaxy group [PDF]

, 2017
We present new MUSE observations of a galaxy group probed by a background quasar. The quasar sightline passes between multiple z = 0.28 galaxies, whilst showing at the same redshift low-ionized metal line species, including Ca II, Mg I, Mg II and Fe II ...
S. L. Morris, Tejos, N., S. Cantalupo, Bielby, R., Crighton, N. H. M., Stott, J. P., R. Bielby, Stott, J.P., Morris, S. L., Cantalupo, S., Crighton, N.H.M., N. H. M. Crighton, Morris, S.L., J. P. Stott, M. Fumagalli, N. Tejos, Fumagalli, M.   +16 more
core   +3 more sources

COMPARISON OF OPTICAL AND X-RAY MASS ESTIMATES OF THE CHANDRA GALAXY CLUSTERS AT Z < 0.1

Odessa Astronomical Publications, 2013
We used the optical data taken from SDSS DR7 galaxy and group catalog to determine the optical mass of 37 nearer Chandra galaxy clusters for comparison with the X-ray mass estimates.
Iu. V. Babyk, I. B. Vavilova
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