The Colors of Central and Satellite Galaxies in zCOSMOS out to z ~ 0.8 and Implications for Quenching by Knobel, C, Lilly, S, Kovac, K, Peng, Y, Bschorr, T, 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, Iovino, A, Kampczyk, P, Lamareille, F

“…We examine the red fraction of central and satellite galaxies in the large zCOSMOS group catalog out to z ~ 0.8 correcting for both the incompleteness in stellar mass and for the less than perfect purities of the central and satellite samples. …”

Kinematics in galactic tidal tails - A source for Hypervelocity stars? by Piffl, T, Williams, M, Steinmetz, M

“…We use a suite of N-body simulations following the encounter of a satellite galaxy with its Milky Way-type host galaxy to gather statistics on the properties of stripped-off stars. …”

Active galactic nuclei and the minor merger hypothesis by Kendall, P, Magorrian, J, Pringle, J

“…We find that for a satellite galaxy to be able to merge directly with the nucleus of the host galaxy (for example, to give rise to the compact dust discs which are seen in early-type active galaxies), the initial orbit of the satellite is required to be well aimed. …”

Disassembling the Galaxy with angle-action coordinates by Mcmillan, P, Binney, J

“…Angle-action coordinates are used to study the relic of an N-body simulation of a self-gravitating satellite galaxy that was released on a short-period orbit within the disc of the Galaxy. …”

How Does Feedback Affect Milky Way Satellite Formation? by Geen, S, Slyz, A, Devriendt, J

“…We use sub-parsec resolution hydrodynamic resimulations of a Milky Way (MW) like galaxy at high redshift to investigate the formation of the MW satellite galaxies. More specifically, we assess the impact of supernova feedback on the dwarf progenitors of these satellite, and the efficiency of a simple instantaneous reionisation scenario in suppressing star formation at the low-mass end of this dwarf distribution. …”

THE DAWNING OF THE STREAM OF AQUARIUS IN RAVE by Williams, M, Steinmetz, M, Sharma, S, Bland-Hawthorn, J, de Jong, R, Seabroke, G, Helmi, A, Freeman, K, Binney, J, Minchev, I, Bienayme, O, Campbell, R, Fulbright, J, Gibson, B, Gilmore, G, Grebel, E, Munari, U, Navarro, J, Parker, Q, Reid, W, Siebert, A, Siviero, A, Watson, F, Wyse, R, Zwitter, T

“…Using a simple dynamical model of a dissolving satellite galaxy, we account for the localization of the stream. …”

Satellite survival in highly resolved Milky Way class haloes by Geen, S, Slyz, A, Devriendt, J

“… Surprisingly little is known about the origin and evolution of the Milky Way's satellite galaxy companions. UV photoionisation, supernova feedback and interactions with the larger host halo are all thought to play a role in shaping the population of satellites that we observe today, but there is still no consensus as to which of these effects, if any, dominates. …”

The Dawning of the Stream of Aquarius in RAVE by Williams, M, Steinmetz, M, Sharma, S, Bland-Hawthorn, J, Jong, R, Seabroke, G, Helmi, A, Freeman, K, Binney, J, Minchev, I, Bienaymé, O, Campbell, R, Fulbright, J, Gibson, B, Gilmore, G, Grebel, E, Munari, U, Navarro, J, Parker, Q, Reid, W, Siebert, A, Siviero, A, Watson, F, Wyse, R, Zwitter, T

“…Using a simple dynamical model of a dissolving satellite galaxy we account for the localization of the stream. …”

Revisiting hypervelocity stars after Gaia DR2 by Boubert, D, Guillochon, J, Hawkins, K, Ginsburg, I, Evans, NW, Strader, J

“…Performing integrations of orbital histories, we find that this object cannot have been ejected from the Galactic centre and thus may be either debris from the disruption of a satellite galaxy or a disc runaway.…”

KiDS+GAMA: Intrinsic alignment model constraints for current and future weak lensing cosmology by Johnston, H, Georgiou, C, Joachimi, B, Hoekstra, H, Chisari, N, Farrow, D, Fortuna, M, Heymans, C, Joudaki, S, Kuijken, K, Wright, A

“…Our results indicate, however, that the modelling of red/blue-split galaxy alignments may be insufficient to describe samples with variable central/satellite galaxy fractions.…”

The RAVE survey: the Galactic escape speed and the mass of the Milky Way by Piffl, T, Scannapieco, C, Binney, J, Steinmetz, M, Scholz, R, Williams, M, Jong, R, Kordopatis, G, Matijevic, G, Bienayme, O, Bland-Hawthorn, J, Boeche, C, Freeman, K, Gibson, B, Gilmore, G, Grebel, E, Helmi, A, Munari, U, Navarro, J, Parker, Q, Reid, W, Seabroke, G, Watson, F, Wyse, R, Zwitter, T

“…This estimate is in good agreement with recently published independent mass estimates based on the kinematics of more distant halo stars and the satellite galaxy Leo I.…”

The strong gravitationally lensed Herschel galaxy HLock01: Optical spectroscopy reveals a close galaxy merger with evidence of inflowing gas by Marques-Chaves, R, Pérez-Fournon, I, Gavazzi, R, Martínez-Navajas, P, Riechers, D, Rigopoulou, D, Cabrera-Lavers, A, Clements, D, Cooray, A, Farrah, D, Ivison, R, Jiménez-Ángel, C, Nayyeri, H, Oliver, S, Omont, A, Scott, D, Shu, Y, Wardlow, J

“…While the SMG appears very massive (M∗≃ 5 ×1011Mo), with a highly extinguished stellar component (AV≃ 4.3), the LBG is a young, lower-mass (M∗≃ 1 ×1010Mo), but still luminous (10 × LUV∗) satellite galaxy. Detailed analysis of the high signal-to-noise ratio (S/N) rest-frame UV spectrum of the LBG shows complex kinematics of the gas, exhibiting both blueshifted and redshifted absorption components. …”

CFHTLenS: The Environmental Dependence of Galaxy Halo Masses from Weak Lensing by Gillis, B, Hudson, M, Erben, T, Heymans, C, Hildebrandt, H, Hoekstra, H, Kitching, T, Mellier, Y, Miller, L, Waerbeke, L, Bonnett, C, Coupon, J, Fu, L, Hilbert, S, Rowe, B, Schrabback, T, Semboloni, E, Uitert, E, Velander, M

“…We use weak gravitational lensing to analyse the dark matter halos around satellite galaxies in galaxy groups in the CFHTLenS dataset. …”

Caught in the rhythm: how satellites settle into a plane around their central galaxy by Welker, C, Dubois, Y, Pichon, C, Devriendt, J, Chisari, N

“…Using the cosmological hydrodynamics simulation Horizon-AGN, we investigate the spatial distribution of satellite galaxies relative to their central counterpart in the redshift range between 0.3 and 0.8. …”

The mass distribution and assembly of the milky way from the properties of the magellanic clouds by Busha, M, Marshall, P, Wechsler, R, Klypin, A, Primack, J

“…We present a new measurement of the mass of the Milky Way (MW) based on observed properties of its largest satellite galaxies, the Magellanic Clouds (MCs), and an assumed prior of a ΛCDM universe. …”

The Mass Distribution and Assembly of the Milky Way from the Properties of the Magellanic Clouds by Busha, M, Marshall, P, Wechsler, R, Klypin, A, Primack, J

“…We present a new measurement of the mass of the Milky Way (MW) based on observed properties of its largest satellite galaxies, the Magellanic Clouds (MCs), and an assumed prior of a {\Lambda}CDM universe. …”

Galaxy Zoo: Disentangling the Environmental Dependence of Morphology and Colour by Skibba, R, Bamford, S, Nichol, R, Lintott, C, Andreescu, D, Edmondson, E, Murray, P, Raddick, M, Schawinski, K, Slosar, A, Szalay, A, Thomas, D, Vandenberg, J

“…We analyze the significant population of red spiral galaxies, and present evidence that they tend to be located in moderately dense environments and are often satellite galaxies in the outskirts of haloes. Finally, we combine our results to argue that central and satellite galaxies tend to follow different evolutionary paths.…”

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.…”

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. …”

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. …”