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Related papers: A MUSE view of the multiple interacting system HCG…

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We use high resolution simulations of the formation of the local group post-processed by a radiative transfer code for UV photons, to investigate the reionization of the satellite populations of an isolated Milky Way-M31 galaxy pair in a…

Astrophysics of Galaxies · Physics 2015-06-23 P. Ocvirk , N. Gillet , D. Aubert , A. Knebe , N. Libeskind , J. Chardin , S. Gottlöber , G. Yepes , Y. Hoffman

We present MUSE observations of AM1354-250, confirming its status as a collisional ring galaxy which has recently undergone an interaction, creating its distinctive shape. We analyse the stellar and gaseous emission throughout the galaxy…

Astrophysics of Galaxies · Physics 2016-03-23 Blair C. Conn , L. M. R. Fogarty , Rory Smith , Graeme N. Candlish

The study of the gas kinematic in the central 1.5kpc x 1.5kpc region of M31 has revealed several surprises. The starting point of this investigation was the detection at the IRAM-30m telescope of molecular gas with very large line…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Anne-Laure Melchior , Francoise Combes

We have systematically analyzed a sample of 13 new and archival ROSAT PSPC observations of compact groups of galaxies: 12 Hickson Compact Groups plus the NCG 2300 group. We find that approximately two-thirds of the groups have extended…

Astrophysics · Physics 2016-08-30 Rachel A. Pildis , Joel N. Bregman , August E. Evrard

Multiscale studies of the morphology and strength of the magnetic field are crucial to properly unveil its role and relative importance in high-mass star and cluster formation. G31.41+0.31 (G31) is a hub-filament system that hosts a…

Luminous and Ultra-luminous IR galaxies ((U)LIRGs) are critical for investigating feedback mechanisms due to a combination of intense star formation (SF) episodes and active galactic nuclei (AGN), particularly in the context of complex…

We study the future orbital evolution and merging of the MW-M31-M33 system, using a combination of collisionless N-body simulations and semi-analytic orbit integrations. Monte-Carlo simulations are used to explore the consequences of…

Astrophysics of Galaxies · Physics 2012-06-12 Roeland P. van der Marel , Gurtina Besla , T. J. Cox , Sangmo Tony Sohn , Jay Anderson

We carry out a joint spatial-kinematical-metallicity analysis of globular clusters (GCs) around the Andromeda Galaxy (M31), using a homogeneous, high-quality spectroscopic dataset. In particular, we remove the contaminating young clusters…

Astrophysics of Galaxies · Physics 2016-06-15 Nelson Caldwell , Aaron J. Romanowsky

We present the results of an ongoing investigation to provide a detailed view of the processes by which massive stars shape the surrounding interstellar medium (ISM), from pc to kpc scales. In this paper we have focused on studying the…

Astrophysics · Physics 2009-10-31 M. A. Bransford , D. A. Thilker , R. A. M. Walterbos , N. L. King

Compact Groups (CGs) of galaxies are dense systems where projected separations are comparable to their optical diameters. A subset - non-isolated CGs - are embedded within major structures. Using multi-band S-PLUS data, we analyse galaxies…

We present a sample of 212 early-type galaxies (ETGs) at redshifts $0.25 < z < 0.75$. We combine deep integral-field spectroscopy from the MUSE-DEEP survey with high-resolution HST imaging to study the structure, kinematics, and stellar…

Astrophysics of Galaxies · Physics 2025-10-29 Pritom Mozumdar , Michele Cappellari , Christopher D. Fassnacht , Tommaso Treu

As the nearest large spiral galaxy, M31 provides a unique opportunity to learn about the structure and evolutionary history of this galaxy type in great detail. Among the many observing programs aimed at M31 are microlensing studies, which…

Astrophysics of Galaxies · Physics 2018-03-21 Michael Opitsch , Maximilian H. Fabricius , Roberto P. Saglia , Ralf Bender , Matias Blaña , Ortwin Gerhard

Based on the integral field unit (IFU) data from Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, we develop a new method to select galaxies with biconical ionized structures, building a sample of 142 edge-on biconical…

Astrophysics of Galaxies · Physics 2024-05-07 Zhi-Jie Zhou , Yan-Mei Chen , Run-Quan Guan , Yong Shi , Qiu-Sheng Gu , Dmitry Bizyaev

According to the standard model of cosmology the visible, baryonic matter of galaxies is embedded in dark matter haloes, thus extending the mass and the size of galaxies by one to two orders of magnitude. Taking into account dynamical…

Astrophysics of Galaxies · Physics 2018-11-09 Wolfgang Oehm , Pavel Kroupa

We present a sample of 46 galaxy nuclei from 12 nearby (z<4500 km/s) Hickson Compact Groups (HCGs) with a complete suite of 1-24 micron 2MASS+Spitzer nuclear photometry. For all objects in the sample, blue emission from stellar photospheres…

In this second paper of two analyses, we present near-infrared (NIR) morphological and asymmetry studies performed in sample of 92 galaxies found in different density environments: galaxies in Compact Groups (HCGs), Isolated Pairs of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 I. Plauchu-Frayn , R. Coziol

We present Keck-I MOSFIRE spectroscopy in the Y and H bands of GDN-8231, a massive, compact, star-forming galaxy (SFG) at a redshift $z\sim1.7$. Its spectrum reveals both H$_{\alpha}$ and [NII] emission lines and strong Balmer absorption…

We present early science results from the MAUVE (Multiphase Astrophysics to Unveil the Virgo Environment) program which targets 40 Virgo Cluster galaxies to investigate the effect of environment on the interstellar medium (ISM) at ~100 pc…

Although Compact Groups of galaxies (CGs) have been envisioned as isolated extremely dense structures in the Universe, it is accepted today that many of them could be not as isolated as thought. In this work, we study Hickson-like CGs…

Astrophysics of Galaxies · Physics 2023-02-15 A. Taverna , J. M. Salerno , I. V. Daza-Perilla , E. Diaz-Gimenez , A. Zandivarez , H. J. Martinez , A. N. Ruiz
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