Results 31 to 40 of about 24,501 (297)

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

open access: yes, 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   +4 more sources

The Nearest Group of Galaxies [PDF]

open access: yesThe Astrophysical Journal, 1999
Has been accepted for publication in the Astrophysical Journal ...
openaire   +3 more sources

Galaxy Group Ellipticity Confirms a Younger Cosmos

open access: yesUniverse
We present an analysis of the ellipticities of galaxy groups, derived from the spatial distribution of member galaxies, revealing a notable incongruity between the observed local galaxy groups and their counterparts in the Lambda cold dark matter ...
Yu Rong
doaj   +1 more source

Hot Atmospheres of Galaxies, Groups, and Clusters of Galaxies [PDF]

open access: yes, 2020
Accepted for publication in the book "Reviews in Frontiers of Modern Astrophysics: From Space Debris to Cosmology" (eds Kabath, Jones and Skarka; publisher Springer Nature) funded by the European Union Erasmus+ Strategic Partnership grant "Per Aspera Ad Astra Simul" 2017-1-CZ01-KA203 ...
Norbert Werner   +4 more
openaire   +3 more sources

A Nearby Isolated Dwarf: Star Formation and Structure of ESO 006–001

open access: yesThe Astrophysical Journal, 2023
Observations with the Hubble Space Telescope unexpectedly revealed that the dwarf galaxy ESO 006–001 is a near neighbor to the Local Group at a distance of 2.70 ± 0.11 Mpc.
Lidia N. Makarova   +6 more
doaj   +1 more source

HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line Spectroscopy

open access: yesThe Astrophysical Journal
We present Chandra and XMM-Newton X-ray observations of the compact group HCG 57, and optical integral field spectroscopy of the interacting galaxy pair HCG 57A/D.
Ewan O’Sullivan   +7 more
doaj   +1 more source

The Photography of Groups of Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1978
The method of combining several negatives together is at last coming into use. Forty years ago this method was used for the first time by Leontovsky in Leningrad. Putting together many negatives he was able to do photometry of M31 to fainter magnitudes than was possible photoelectrically.
openaire   +2 more sources

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

open access: yesMonthly Notices of the Royal Astronomical Society, 2002
3 figures replaced, accepted for publication in ...
Diego G. Lambas   +5 more
openaire   +4 more sources

Simultaneous inhibition of TRIM24 and TRIM28 sensitises prostate cancer cells to antiandrogen therapy, decreasing VEGF signalling and angiogenesis

open access: yesMolecular Oncology, EarlyView.
TRIM24 and TRIM28 are androgen receptor (AR) coregulators which exhibit increased expression with cancer progression. Both TRIM24 and TRIM28 combine to influence the response of castrate‐resistant prostate cancer (CRPC) cells to AR inhibitors by mediating AR signalling, regulation of MYC and upregulating VEGF to promote angiogenesis. Castrate‐resistant
Damien A. Leach   +8 more
wiley   +1 more source

Detection of a Spatially Extended Stellar Population in M33: A Shallow Stellar Halo?

open access: yesThe Astrophysical Journal
We analyze the outer regions of M33, beyond 15 kpc in projected distance from its center, using Subaru/Hyper Suprime-Cam multicolor imaging. We identify red giant branch (RGB) stars and red clump (RC) stars using the surface-gravity-sensitive NB515 ...
Itsuki Ogami   +10 more
doaj   +1 more source

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