63 citations · 366 across the 22 of their papers we have counts for
22 papers
Reconstructing the Globular Cluster Initial Mass Function from Present-Day Globular Cluster Systems
Elizabeth Moreno-Hilario, Hui Li, Luis A. Martinez-Medina
The near-universal turnover mass of the present-day globular cluster mass function (GCMF), , is a well established observational featu…
Metal-rich stellar counterpart of the Radcliffe Wave and the 3D chemical footprints of the Milky Way spiral arms
Luis Martinez-Medina, Eloisa Poggio, Elizabeth Moreno-Hilario
Mapping the Milky Way spiral arms in the vertical direction remains a challenging task that has received little attention. Taking advantage of recent results that link the position…
The influence of globular cluster evolution on the specific frequency in dwarf galaxies
Elizabeth Moreno-Hilario, Luis A. Martinez-Medina, Hui Li +2
Dwarf galaxies are known to exhibit an unusual richness in numbers of globular clusters (GCs), property quantified by the specific frequency (), which is high for dwarf and gi…
SDSS IV MaNGA: Bar pattern speed in Milky Way Analogue galaxies
Luis Garma-Oehmichen, Héctor Hernández-Toledo, Erik Aquino-Ortíz +8
Most secular effects produced by stellar bars strongly depend on the pattern speed. Unfortunately, it is also the most difficult observational parameter to estimate. In this work,…
Kinematic footprint of the Milky Way spiral arms in Gaia EDR3
Luis Martinez-Medina, Angeles Pérez-Villegas, Antonio Peimbert
The Milky Way spiral arms are well established from star counts as well as from the locus of molecular clouds and other young objects, however, they have only recently started to b…
How the bar properties affect the induced spiral structure
L. Garma-Oehmichen, L. Martinez-Medina, H. Hernández-Toledo +1
Stellar bars and spiral arms co-exist and co-evolve in most disc galaxies in the local Universe. However, the physical nature of this interaction remains a matter of debate. In thi…
On the response of a star cluster to a tidal perturbation
Luis A. Martinez-Medina, Mark Gieles, Oleg Y. Gnedin +1
We study the response of star clusters to individual tidal perturbations using controlled -body simulations. We consider perturbations by a moving point mass and by a disc, and…
The imprint of arms and bars on rotation curves: in-plane and off-plane
Luis A. Martinez-Medina, Barbara Pichardo, Antonio Peimbert
Within Rotation Curves (RC) is encoded the kinematical state of the stellar disc as well as information about the dynamical mechanisms driving the secular evolution of galaxies. To…
From ridges in the velocity distribution to wiggles in the rotation curve
Luis A. Martinez-Medina, Barbara Pichardo, Antonio Peimbert +1
Recently, the Gaia data release 2 (DR2) showed us the richness in the kinematics of the Milky Way disk. Of particular interest is the presence of ridges covering the stellar veloci…
New insights in the origin and evolution of the old, metal-rich open cluster NGC 6791
Luis A. Martinez-Medina, Mark Gieles, Barbara Pichardo +1
NGC 6791 is one of the most studied open clusters, it is massive (), located at the solar circle, old (Gyr) and yet the most metal-rich cluster (${\rm [F…
Dynamics and Morphology of the Milky Way Spiral Arms from the Metallicity Distribution and Radial Mixing
L. A. Martinez-Medina, B. Pichardo, A. Peimbert +1
Albeit radial migration must be a ubiquitous process in disc galaxies, its significance in the evolution of stellar discs is not always reflected through global trends. However, th…
On the Survival of High-Altitude Open Clusters within the Milky Way Galaxy Tides
L. A. Martinez-Medina, B. Pichardo, A. Peimbert +1
It is a common assumption that high-altitude open clusters live longer compared with clusters moving close to the Galactic plane. This is because at high altitudes, open clusters a…
Revealing the spiral arms through radial migration and the shape of the Metallicity Distribution Function
L. A. Martinez-Medina, B. Pichardo, E. Moreno +1
Recent observations show that the Milky Way's metallicity distribution function (MDF) changes its shape as a function of radius. This new evidence of radial migration within the st…
Discovery of a Metal-Poor Field Giant with a Globular Cluster Second-Generation Abundance Pattern
J. G. Fernández-Trincado, A. C. Robin, E. Moreno +31
We report on detection, from observations obtained with the APOGEE spectroscopic survey, of a metal-poor ([Fe/H] dex) field giant star with an extreme Mg-Al abundance rati…
On the Origin of High-Altitude Open Clusters in the Milky Way
L. A. Martinez-Medina, B. Pichardo, E. Moreno +2
We present a dynamical study of the effect of the bar and spiral arms on the simulated orbits of open clusters in the Galaxy. Specifically, this work is devoted to the puzzling pre…
On wave dark matter in spiral and barred galaxies
L. A. Martinez-Medina, Hubert L. Bray, Tonatiuh Matos
We recover spiral and barred spiral patterns in disk galaxy simulations with a Wave Dark Matter (WDM) background (also known as Scalar Field Dark Matter (SFDM), Ultra-Light Axion (…
Detecting Triaxiality in the Galactic Dark Matter Halo through Stellar Kinematics II: Dependence on Dark Matter and Gravity Nature
Armando Rojas-Niño, Luis A. Martínez-Medina, Barbara Pichardo +1
Recent studies have presented evidence that the Milky Way global potential may be nonspherical. In this case, the assembling process of the Galaxy may have left long lasting stella…
SFDM: A new formation mechanism of tidal debris
Victor H. Robles, L. A. Martinez-Medina, T. Matos
Recent observations of tidal debris around galaxies have revealed that the structural properties of the spheroidal components of tidally disturbed galaxies are similar to those fou…
The Contribution of Spiral Arms to the Thick Disk along the Hubble Sequence
L. A. Martinez-Medina, B. Pichardo, A. Pérez-Villegas +1
The first mechanism invoked to explain the existence of the thick disk in the Milky Way Galaxy, were the spiral arms. Up-to-date work summon several other possibilities that togeth…
Dwarf galaxies in multistate Scalar Field Dark Matter haloes
L. A. Martinez-Medina, V. H. Robles, T. Matos
We analyse the velocity dispersion for eight of the Milky Way dwarf spheroidal satellites in the context of finite temperature scalar field dark mater. In this model the finite tem…
Scalar Field Dark Matter mass model and evolution of rotation curves for Lsb galaxies
Luis A. Martinez-Medina, Tonatiuh Matos
We study the evolution of gas rotation curves within the scalar field dark matter (SFDM) model. In this model the galactic haloes are astronomical Bose-Einstein Condensate drops of…
Detecting Triaxiality in the Galactic Dark Matter halo through Stellar Kinematics
Armando Rojas-Niño, Octavio Valenzuela, Barbara Pichardo +1
Assuming the dark matter halo of the Milky Way as a non-spherical potential (i.e. triaxial, prolate, oblate), we show how the assembling process of the Milky Way halo, may have lef…