Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers by Milošević S.

“…In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies. We run the N-body simulations with two morphological models of a dwarf galaxy for different initial positions. …”
Get full text

A Comprehensive Perturbative Formalism for Phase Mixing in Perturbed Disks. II. Phase Spirals in an Inhomogeneous Disk Galaxy with a Nonresponsive Dark Matter Halo by Uddipan Banik, Frank C. van den Bosch, Martin D. Weinberg

“…Slower ( τ _P > τ _z ) perturbations, e.g., distant encounters with satellite galaxies, induce stronger bending modes. Sagittarius (Sgr) dominates the solar neighborhood response of the Milky Way (MW) disk to satellite encounters. …”
Get full text

The Effect of the LMC on the Milky Way System by Eugene Vasiliev

“…The most immediate effect is the deflection of orbits of stars, stellar streams, or satellite galaxies passing in the vicinity of the LMC. Less well known but equally important is the displacement (reflex motion) of central regions of the Milky Way about the centre of mass of both galaxies. …”
Get full text

The dependence of intrinsic alignment of galaxies on wavelength using KiDS and GAMA by Georgiou, C, Johnston, H, Hoekstra, H, Viola, M, Kuijken, K, Joachimi, B, Chisari, N, Farrow, D, Hildebrandt, H, Holwerda, B, Kannawadi, A

“…Separating the sample into central/satellite and red/blue galaxies, we find that the difference is dominated by red satellite galaxies.…”

Galaxy Quenching with Mass Growth History of Galaxy Groups and Clusters: The Importance of Post-processing by So-Myoung Park, Kyungwon Chun, Jihye Shin, Hyunjin Jeong, Joon Hyeop Lee, Mina Pak, Rory Smith, Jae-Woo Kim

“…We investigate the fraction of quenched satellite galaxies in host galaxy groups and clusters using TNG300 in the IllustrisTNG cosmological magnetohydrodynamical simulations. …”
Get full text

Galaxy assembly revealed by globular clusters by Yingtian Chen, Oleg Y. Gnedin

“…For the Milky Way (MW) in particular, GCs from different accreted satellite galaxies show distinct chemical, spatial, kinematic, and age distributions. …”
Get full text

On the filamentary environment of galaxies by Gay, C, Pichon, C, Borgne, D, Teyssier, R, Sousbie, T, Devriendt, J

“…The origin of this bimodality is investigated and seems to follow from the ram pressure stripping of satellite galaxies within the more massive clusters of the simulation. …”

Search for Dark Matter Annihilation in Galaxy Groups by Lisanti, Mariangela, Mishra-Sharma, Siddharth, Rodd, Nicholas Llewellyn, Safdi, Benjamin Ryan

“…These bounds are comparable to those from Milky Way dwarf spheroidal satellite galaxies. The results of our analysis increase the tension but do not rule out the dark matter interpretation of the Galactic Center excess. …”
Get full text
Get full text
Get full text

From Nuclei to the Cosmos: Tracing Heavy-Element Production with the Oldest Stars by Frebel, Anna L.

“…Old stars found in the Milky Way and its dwarf satellite galaxies can provide answers because they preserve clean element abundance patterns of the nucleosynthesis processes that operated some 13 billion years ago, enabling reconstruction of the chemical evolution of the elements. …”
Get full text

From Nuclei to the Cosmos: Tracing Heavy-Element Production with the Oldest Stars by Frebel, Anna L.

“…Old stars found in the Milky Way and its dwarf satellite galaxies can provide answers because they preserve clean element abundance patterns of the nucleosynthesis processes that operated some 13 billion years ago, enabling reconstruction of the chemical evolution of the elements. …”
Get full text

Gravitational orbits in the expanding Universe revisited by Václav Vavryčuk

“…The theory resolves challenges to the ΛCDM model such as the problem of faint satellite galaxies, baryonic Tully-Fisher relation or the radial acceleration relation. …”
Get full text

Feeding compact bulges and supermassive black holes with low angular-momentum cosmic gas at high redshift by Dubois, Y, Pichon, C, Haehnelt, M, Kimm, T, Slyz, A, Devriendt, J, Pogosyan, D

“…Structures falling in along the filaments (satellite galaxies) or formed by gravitational instabilities triggered by the inflow (star clusters) further reduce the angular momentum of the gas in the bulge. …”

GAMA+KiDS: Alignment of galaxies in galaxy groups and its dependence on galaxy scale by Georgiou, C, Chisari, N, Fortuna, M, Hoekstra, H, Kuijken, K, Joachimi, B, Vakili, M, Bilicki, M, Dvornik, A, Erben, T, Giblin, B, Heymans, C, Napolitano, N, Shan, H

“…In this work, we measure the alignment of shapes of satellite galaxies, in galaxy groups, with respect to the brightest group galaxy (BGG), as well as alignments of the BGG shape with the satellite positions, using the highly complete Galaxy And Mass Assembly (GAMA) spectroscopic survey and deep imaging from the Kilo Degree Survey. …”

The Tully–Fisher and mass–size relations from halo abundance matching by Desmond, H, Wechsler, R

“…Finally, we explore the expected difference between the TFRs of central and satellite galaxies, finding that in the favoured models this difference should be detectable in a sample of ∼700 galaxies.…”

Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ν Indi by Chaplin, William J., Serenelli, Aldo M., Miglio, Andrea, Morel, Thierry, Mackereth, J. Ted, Vincenzo, Fiorenzo, Kjeldsen, Hans, Basu, Sarbani, Ball, Warrick H., Stokholm, Amalie, Verma, Kuldeep, Mosumgaard, Jakob Rørsted, Silva Aguirre, Victor, Mazumdar, Anwesh, Ranadive, Pritesh, Antia, H. M., Lebreton, Yveline, Ong, Joel, Appourchaux, Thierry, Bedding, Timothy R., Christensen-Dalsgaard, Jørgen, Creevey, Orlagh, García, Rafael A., Handberg, Rasmus, Huber, Daniel, Kawaler, Steven D., Lund, Mikkel N., Metcalfe, Travis S., Stassun, Keivan G., Bazot, Michäel, Beck, Paul G., Bell, Keaton J., Bergemann, Maria, Buzasi, Derek L., Benomar, Othman, Bossini, Diego, Bugnet, Lisa, Campante, Tiago L., Orhan, Zeynep Çelik, Corsaro, Enrico, González-Cuesta, Lucía, Davies, Guy R., Di Mauro, Maria Pia, Egeland, Ricky, Elsworth, Yvonne P., Gaulme, Patrick, Ghasemi, Hamed, Guo, Zhao, Hall, Oliver J., Hasanzadeh, Amir, Hekker, Saskia, Howe, Rachel, Jenkins, Jon M., Jiménez, Antonio, Kiefer, René, Kuszlewicz, James S., Kallinger, Thomas, Latham, David W., Lundkvist, Mia S., Mathur, Savita, Montalbán, Josefina, Mosser, Benoit, Bedón, Andres Moya, Nielsen, Martin Bo, Örtel, Sibel, Rendle, Ben M., Ricker, George R., Rodrigues, Thaíse S., Roxburgh, Ian W., Safari, Hossein, Schofield, Mathew, Seager, Sara, Smalley, Barry, Stello, Dennis, Szabó, Róbert, Tayar, Jamie, Themeßl, Nathalie, Thomas, Alexandra E. L., Vanderspek, Roland K., van Rossem, Walter E., Vrard, Mathieu, Weiss, Achim, White, Timothy R., Winn, Joshua N., Yıldız, Mutlu

“…Over the course of its history, the Milky Way has ingested multiple smaller satellite galaxies1. Although these accreted stellar populations can be forensically identified as kinematically distinct structures within the Galaxy, it is difficult in general to date precisely the age at which any one merger occurred. …”
Get full text

Galactic conformity in both star formation and morphological properties by Otter, JA, Masters, KL, Simmons, B, Lintott, CJ

“…We investigate one-halo galactic conformity (the tendency for satellite galaxies to mirror the properties of their central) in both star formation and morphology using a sample of 8230 galaxies in 1266 groups with photometry and spectroscopy from the Sloan Digital Sky Survey, morphologies from Galaxy Zoo and group memberships as determined by Yang et al. …”

Feeding compact bulges and supermassive black holes with low angular momentum cosmic gas at high redshift by Dubois, Y, Pichon, C, Haehnelt, M, Kimm, T, Slyz, A, Devriendt, J, Pogosyan, D

“…Structures falling in along the filaments (satellite galaxies) or formed by gravitational instabilities triggered by the inflow (star clusters) further reduce the angular momentum of the gas in the bulge. …”

On the density profile of dark matter substructure in gravitational lens galaxies by Vegetti, Simona, Vogelsberger, Mark

“…We consider three extensions of the Navarro, Frenk and White (NFW) profile and investigate the intrinsic degeneracies among the density profile parameters on the gravitational lensing effect of satellite galaxies on highly magnified Einstein rings. In particular, we find that the gravitational imaging technique can be used to exclude specific regions of the considered parameter space, and therefore, models that predict a large number of satellites in those regions. …”
Get full text
Get full text

The zCOSMOS 20k Group Catalog by Knobel, C, Lilly, S, Iovino, A, Kovac, K, Bschorr, T, Presotto, V, Oesch, P, Kampczyk, P, Carollo, C, Contini, T, Kneib, J, Fevre, O, Mainieri, V, Renzini, A, Scodeggio, M, Zamorani, G, Bardelli, S, Bolzonella, M, Bongiorno, A, Caputi, K, Cucciati, O, Torre, S, Ravel, L, Franzetti, P, Garilli, B

“…We show that this leads to improved definition of group centers, improved identification of the most massive galaxies in the groups, and improved identification of central and satellite galaxies, where we define the former to be galaxies at the minimum of the gravitational potential wells. …”

LUMINOUS SATELLITES. II. SPATIAL DISTRIBUTION, LUMINOSITY FUNCTION, AND COSMIC EVOLUTION by Nierenberg, A, Auger, M, Treu, T, Marshall, P, Fassnacht, C, Busha, M

“…Describing the number density profile of satellite galaxies to be a projected power law such that , we find γp = -1.1 ± 0.3. …”