Results 71 to 80 of about 1,023,991 (216)

Revisiting Variable Stars Toward the Globular Cluster NGC 6496 With ATLAS and Gaia Photometry

Astronomische Nachrichten, Volume 347, Issue 7, August 2026.
ABSTRACT We revisit 13 variable stars in the field of the metal‐rich globular cluster NGC 6496, discovered by Abbas et al. (2015; Astronomical Journal 149:40) (hereafter referred to as “MA15”) via time‐series data, spanning 2 years. We improve upon the MA15 characterization of the variables using ATLAS time‐series photometry data, spanning 8 years, in ...
Madison E. Martin, Andrew Layden, Andrew McNeill   +2 more
wiley   +1 more source

The Angular Momentum of Brightest Cluster Galaxies [PDF]

, 2017
Massive Brightest Cluster Galaxies (BCGs) are observed to have a range of angular momenta, suggesting a variety of merging ...
Brough, S., von der Linden, A., Tran, K.-V   +2 more
core  

Molecular gas in distant brightest cluster galaxies

, 2020
The stellar mass assembly of brightest cluster galaxies (BCGs) is still debated. We have observed in CO with the IRAM-30m two star forming BCGs belonging to SpARCS clusters, 3C 244.1 ($z=0.4$) and SDSS J161112.65+550823.5 ($z=0.9$), and compared their ...
Castignani, G., F. Combes, Combes, F., G. Castignani, Freundlich, J., P. Salomé, Salomé, P., J. Freundlich   +7 more
core   +1 more source

Galaxy And Mass Assembly (GAMA) : testing galaxy formation models through the most massive galaxies in the Universe [PDF]

, 2014
We have analysed the growth of Brightest Group Galaxies and Brightest Cluster Galaxies (BGGs/BCGs) over the last 3 billion years using a large sample of 883 galaxies from the Galaxy And Mass Assembly survey. By comparing the stellar mass of BGGs and BCGs
Loveday, J, Baldry, I., Kampen, E. van, Pimbblet, K. A., Ponman, T., Gunawardhana, M. L. P., Couch, W.J., Lara-Lopez, M. A., Lidman, Christopher, Liske, J, Conselice, C. J., Couch, Warrick, Taylor, E., Graham, A.W., López-Sánchez, A.R., Bland-Hawthorn, Jonathan, Cluver, M, Bauer, A. E., Oliva-Altamirano, Paola, Colless, Matthew, Sharp, Rob, Oliva-Altamirano, P., Phillipps, Steven, Hopkins, A. M., Brough, S., Loveday, J., Gunawardhana, Madusha, Liske, J., Lara-López, M.A., Van Kampen, E, Mahajan, S., Edge, Alistair, Robotham, A, Edge, A.C., Cameron, E., Pimbblet, Kevin, Edge, A. C., Robotham, A. S. G., van Kampen, E., Phillipps, S., Bauer, A.E., Sharp, R.G., Bland-Hawthorn, J., Conselice, Christopher, Robotham, A.S.G., Graham, A. W., Peacock, John, Gunawardhana, M.L.P., Taylor, Edward, Sharp, R. G., Lidman, C., Cluver, M., Cameron, Ewan, Lopez-Sanchez, Angel, Hopkins, A.M., Driver, Simon, Couch, W. J., Driver, S., Colless, M., Lopez-Sanchez, A. R., Ponman, Trevor, Conselice, C.J., Brough, Sarah, Baldry, Ivan, Pimbblet, K.A., Peacock, J., Mahajan, Smriti, Graham, Alister, Lara-Lopez, Maritza, Hopkins, Andrew, Bauer, A   +70 more
core   +1 more source

Investigating the M GCS–M h Relation in the Most Massive Galaxies

The Astrophysical Journal, 2023
The relation between the total mass contained in the globular clusters of a galaxy and the mass of its dark-matter halo has been found observationally to be nearly linear over five decades of mass.
Veronika Dornan, William E. Harris
doaj   +1 more source

Low Frequency Extensions of Cyclotron Maser Instability‐Generated Radio Emission: A Statistical View From Cassini at Saturn

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The Cassini spacecraft spent 13 years orbiting Saturn, quasi‐continuously measuring Saturn's radio emissions. One of the key elements of the radio spectrum at Saturn is the Saturn Kilometric Radiation (SKR), and several studies have been written on events called Low Frequency Extensions (LFEs) which represent strong, continuous extensions of ...
C. M. Jackman, A. R. Fogg, S. W. H. Cowley, G. Provan, H. Adamski, N. M. Besch, D. M. Hollman, S. Walker, M. J. Rutala, L. Lamy, C. K. Louis, E. P. O’Dwyer   +11 more
wiley   +1 more source

Kinematics, abundances and origin of brightest cluster galaxies

Monthly Notices of the Royal Astronomical Society, 1999
21 pages, accepted for publication in ...
Carter, D, Bridges, TJ, Hau, GKT
openaire   +2 more sources

A BRIGHTEST CLUSTER GALAXY WITH AN EXTREMELY LARGE FLAT CORE [PDF]

The Astrophysical Journal, 2012
Hubble Space Telescope images of the galaxy cluster Abell 2261, obtained as part of the Cluster Lensing And Supernova survey with Hubble, show that the brightest galaxy in the cluster, A2261-BCG, has the largest core yet detected in any galaxy. The cusp radius of A2261-BCG is 3.2 kpc, twice as big as the next largest core known, and ~3x bigger than ...
M. Postman, T. R. Lauer, M. Donahue, G. Graves, D. Coe, J. Moustakas, A. Koekemoer, L. Bradley, H. C. Ford, C. Grillo, A. Zitrin, D. Lemze, T. Broadhurst, L. Moustakas, B. Ascaso, E. Medezinski, D. Kelson   +16 more
openaire   +4 more sources

High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275

The Astrophysical Journal
We  present new high-spectral-resolution observations ( R = λ /Δ λ = 7000) of the filamentary nebula surrounding NGC 1275, the central galaxy of the Perseus cluster.
Benjamin Vigneron, Julie Hlavacek-Larrondo, Carter Lee Rhea, Marie-Lou Gendron-Marsolais, Jeremy Lim, Jake Reinheimer, Yuan Li, Laurent Drissen, Greg L. Bryan, Megan Donahue, Alastair Edge, Andrew Fabian, Stephen Hamer, Thomas Martin, Michael McDonald, Brian McNamara, Annabelle Richard-Lafferrière, Laurie Rousseau-Nepton, G. Mark Voit, Tracy Webb, Norbert Werner   +20 more
doaj   +1 more source

Probing the effect of the protocluster environment on galaxy morphology at z = 2.23

Astronomy & Astrophysics
Context. As galaxies evolve in dense cluster and protocluster environments, they interact and quench their star formation. This gradually transforms the dominant galaxy population from star-forming galaxies to quiescent red galaxies.
Golden-Marx E., Cai Z., Shi D., Wang X., Lemaux B. C., Vulcani B., Häußler B., Renard P., Shen L., Giddings F.   +9 more
doaj   +1 more source