Marcelo D. Mora
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View article: Searching for new hypervelocity stars with <i>Gaia</i> DR3 and VLT/FORS2 spectroscopy
Searching for new hypervelocity stars with <i>Gaia</i> DR3 and VLT/FORS2 spectroscopy Open
Context. Hypervelocity stars are unique objects that move through the Milky Way at speeds exceeding the local escape velocity. They provide valuable insights into the gravitational potential of the Galaxy and the properties of its central …
View article: Colors and Dynamics of a Near-Sun Orbital Asteroid Family: 2021 PH27 and 2025 GN1
Colors and Dynamics of a Near-Sun Orbital Asteroid Family: 2021 PH27 and 2025 GN1 Open
We observed the dynamically similar near-Sun asteroids 2021 PH27 and 2025 GN1 for their optical colors. These objects have the lowest known semimajor axes of any asteroids. 2021 PH27 has the largest general relativistic effects of any know…
View article: Diving into dangerous tides: The impact of galaxy cluster tidal environments on satellite galaxy mass densities
Diving into dangerous tides: The impact of galaxy cluster tidal environments on satellite galaxy mass densities Open
Satellite galaxies endure powerful environmental tidal forces that drive mass stripping of their outer regions. Consequently, satellites located in central regions of galaxy clusters or groups, where the tidal field is strongest, are expec…
View article: Exploring the stellar streams and satellites around the giant low surface brightness galaxy Malin 1
Exploring the stellar streams and satellites around the giant low surface brightness galaxy Malin 1 Open
Context. Giant Low Surface Brightness galaxies, such as Malin 1, host extended stellar and gaseous disks exceeding 100 kpc in radius. Their formation and evolution remain debated, with interactions with satellite galaxies and accretion str…
View article: Resolved properties of a luminous hinge clump in the compact group of galaxies NGC 6845
Resolved properties of a luminous hinge clump in the compact group of galaxies NGC 6845 Open
Context. Compact groups of galaxies are unique places where galaxy-galaxy interactions play a mayor role on the evolution of its members. These strong gravitational encounters can induce star formation bursts. Aims. We study the properties…
View article: The Giant Low Surface Brightness Galaxy Malin 1: New Constraints for Its Molecular Gas Mass from GBT/ARGUS Observations
The Giant Low Surface Brightness Galaxy Malin 1: New Constraints for Its Molecular Gas Mass from GBT/ARGUS Observations Open
We report on results from GBT/ARGUS 12 CO(1-0) observations for the giant low surface brightness galaxy Malin 1, which allow us to determine an upper limit for its CO mass, and hence its molecular gas mass and molecular gas mass surface de…
View article: The Next Generation Fornax Survey (NGFS): Satellite Environmental Regions.
The Next Generation Fornax Survey (NGFS): Satellite Environmental Regions. Open
All satellite galaxies experience environmental secular evolution as they are accreted onto their host systems. Observations and simulations indicate that the closer they are to their hosts, the higher their dark matter densities are. Usin…
View article: The giant low surface brightness galaxy Malin 1: new constraints for its molecular gas mass from GBT/ARGUS observations
The giant low surface brightness galaxy Malin 1: new constraints for its molecular gas mass from GBT/ARGUS observations Open
We report on results from GBT/ARGUS $^{12}$CO(1-0) observations for the giant low surface brightness galaxy Malin 1, which allow us to determine an upper limit for its CO mass, and hence its molecular gas mass and molecular gas mass surfac…
View article: BUDDI-MaNGA II: the star-formation histories of bulges and discs of S0s
BUDDI-MaNGA II: the star-formation histories of bulges and discs of S0s Open
Many processes have been proposed to explain the quenching of star formation in spiral galaxies and their transformation into S0s. These processes affect the bulge and disc in different ways, and so by isolating the bulge and disc spectra,…
View article: Signatures of tidal disruption in the Milky Way globular cluster NGC 6981 (M72)
Signatures of tidal disruption in the Milky Way globular cluster NGC 6981 (M72) Open
We study the outer regions of the Milky Way globular cluster NGC 6981 based on publicly available B V photometry and new Dark Energy Camera (DECam) observations, both of which reach nearly 4 mag below the cluster main sequence (MS) turnoff…
View article: The Next Generation Fornax Survey (NGFS): VII. A MUSE view of the nuclear star clusters in Fornax dwarf galaxies
The Next Generation Fornax Survey (NGFS): VII. A MUSE view of the nuclear star clusters in Fornax dwarf galaxies Open
Clues to the formation and evolution of nuclear star clusters (NSCs) lie in their stellar populations. However, these structures are often very faint compared to their host galaxy, and spectroscopic analysis of NSCs is hampered by contamin…
Clues on Arp 142: The spiral–elliptical merger Open
Nearby merging pairs are unique laboratories in which one can study the gravitational effects on the individual interacting components. In this manuscript, we report the characterization of selected H ii regions along the peculiar galaxy N…
View article: On collision course: The nature of the binary star cluster NGC2006/SL 538
On collision course: The nature of the binary star cluster NGC2006/SL 538 Open
Context. The Large Magellanic Cloud (LMC) is known to be the host of a rich variety of star clusters of all ages. A large number of them is seen in close projected proximity. Ages have been derived for few of them showing differences up to…
View article: The globular cluster NGC 7492 and the Sagittarius tidal stream: together but unmixed
The globular cluster NGC 7492 and the Sagittarius tidal stream: together but unmixed Open
We have derived from VIMOS spectroscopy the radial velocities for a sample of 71 stars selected from CFHT/Megacam photometry around the Galactic globular cluster NGC 7492. In the resulting velocity distribution, it is possible to distingui…