Triple-active galactic nucleus (AGN) systems are expected to be the result of the hierarchical model of galaxy formation. Since there are very few of them...
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Publicación3D Spectroscopy with GTC-MEGARA of the Triple AGN Candidate in SDSS J102700.40+174900.8
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NoticiaDeterminan la historia evolutiva de la Vía Láctea más detallada hasta la fecha
Gracias a datos de la misión Gaia, de la Agencia Espacial Europea (ESA), un equipo internacional liderado por investigadores del Instituto de Astrofísica de...
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PublicaciónThe Galaxy "Missing Dark Matter" NGC 1052-DF4 is Undergoing Tidal Disruption
The existence of long-lived galaxies lacking dark matter represents a challenge to our understanding of how galaxies form. Here, we present evidence that...
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PublicaciónThe Undiscovered Ultradiffuse Galaxies of the Local Group
Ultradiffuse galaxies (UDGs) are attractive candidates to probe cosmological models and test theories of galaxy formation at low masses; however, they are...
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PublicaciónYoung, Blue, and Isolated Stellar Systems in the Virgo Cluster. I. 2D Optical Spectroscopy
We use panoramic optical spectroscopy obtained with the Very Large Telescope/MUSE to investigate the nature of five candidate extremely isolated low-mass star...
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PublicaciónYoung, Blue, and Isolated Stellar Systems in the Virgo Cluster. II. A New Class of Stellar System
We discuss five blue stellar systems in the direction of the Virgo cluster, analogous to the enigmatic object SECCO 1 (AGC 226067). These objects were...