Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Yamilet Rodríguez-Lazcano is active.

Publication


Featured researches published by Yamilet Rodríguez-Lazcano.


Proceedings of the National Academy of Sciences of the United States of America | 2013

Crystallization of CO2 ice and the absence of amorphous CO2 ice in space

Rafael Escribano; Guillermo M. Muñoz Caro; G. A. Cruz-Diaz; Yamilet Rodríguez-Lazcano; Belén Maté

Carbon dioxide (CO2) is one of the most relevant and abundant species in astrophysical and atmospheric media. In particular, CO2 ice is present in several solar system bodies, as well as in interstellar and circumstellar ice mantles. The amount of CO2 in ice mantles and the presence of pure CO2 ice are significant indicators of the temperature history of dust in protostars. It is therefore important to know if CO2 is mixed with other molecules in the ice matrix or segregated and whether it is present in an amorphous or crystalline form. We apply a multidisciplinary approach involving IR spectroscopy in the laboratory, theoretical modeling of solid structures, and comparison with astronomical observations. We generate an unprecedented highly amorphous CO2 ice and study its crystallization both by thermal annealing and by slow accumulation of monolayers from the gas phase under an ultrahigh vacuum. Structural changes are followed by IR spectroscopy. We also devise theoretical models to reproduce different CO2 ice structures. We detect a preferential in-plane orientation of some vibrational modes of crystalline CO2. We identify the IR features of amorphous CO2 ice, and, in particular, we provide a theoretical explanation for a band at 2,328 cm−1 that dominates the spectrum of the amorphous phase and disappears when the crystallization is complete. Our results allow us to rule out the presence of pure and amorphous CO2 ice in space based on the observations available so far, supporting our current view of the evolution of CO2 ice.


Journal of Physical Chemistry A | 2013

The structure and spectroscopy of cyanate and bicarbonate ions. Astrophysical implications.

Miguel Ángel Moreno; Belén Maté; Yamilet Rodríguez-Lazcano; Óscar Gálvez; Pedro C. Gómez; Víctor J. Herrero; Rafael T. Escribano

Cyanate and bicarbonate are two ions that play active roles in many fields of physics and chemistry, including biological sciences and astrochemistry. We present here a comprehensive study of these species covering a range of phases and methodologies. We have performed theoretical calculations on the isolated ions and their hydrates with one to four water molecules, and in clusters with 15 water molecules. The predicted infrared spectra are compared with observed spectra from experiments where liquid droplets of their solutions are frozen at 14 K on a substrate, to mimic some astrophysical conditions. Crystals of cyanate and bicarbonate sodium and potassium salts are also studied experimental and theoretically. As well, the spontaneous decomposition of cyanate into bicarbonate is documented from the spectra of an aged solution. Finally, the possible astrophysical observation of bicarbonate in water-containing particles is discussed.


Physical Chemistry Chemical Physics | 2011

An infrared study of solid glycine in environments of astrophysical relevance

Belén Maté; Yamilet Rodríguez-Lazcano; Óscar Gálvez; Isabel Tanarro; Rafael Escribano


The Astrophysical Journal | 2013

Optical Constants of NH3 and NH3:N2 Amorphous Ices in the Near-infrared and Mid-infrared Regions

Alexandre Zanchet; Yamilet Rodríguez-Lazcano; Óscar Gálvez; Víctor J. Herrero; Rafael Escribano; Belén Maté


Physical Chemistry Chemical Physics | 2012

Morphology and crystallization kinetics of compact (HGW) and porous (ASW) amorphous water ice

Belén Maté; Yamilet Rodríguez-Lazcano; Víctor J. Herrero


Journal of Quantitative Spectroscopy & Radiative Transfer | 2012

Solid L-α-alanine: Spectroscopic properties and theoretical calculations

Yamilet Rodríguez-Lazcano; Belén Maté; Óscar Gálvez; Víctor J. Herrero; Isabel Tanarro; Rafael Escribano


Physical Chemistry Chemical Physics | 2014

The formation of carbamate ions in interstellar ice analogues

Yamilet Rodríguez-Lazcano; Belén Maté; Víctor J. Herrero; Rafael Escribano; Óscar Gálvez


The Astrophysical Journal | 2012

Cyanate ion in compact amorphous water ice

Belén Maté; Víctor J. Herrero; Yamilet Rodríguez-Lazcano; Delia Fernández-Torre; Miguel Ángel Moreno; Pedro C. Gómez; Rafael Escribano


Archive | 2016

Laboratory astrophysics at IEM: overview of recent results

Esther Carrasco; Maite Cueto; José Luis Doménech; Rafael Escribano; Delia Fernández-Torre; Óscar Gálvez; Víctor J. Herrero; Miguel Jiménez-Redondo; Belén Maté; Beatriz Martín-Llorente; Miguel Ángel Moreno; Ismael K. Ortega; Yamilet Rodríguez-Lazcano; Isabel Tanarro


Archive | 2014

A study of aminoacid stability in samples of interstellar A study of aminoacid stability in samples of interstellar carbonaceous dust and ice analogues and ice analogues

Belén Maté; Víctor J. Herrero; Miguel Jiménez-Redondo; Isabel Tanarro; Yamilet Rodríguez-Lazcano; Óscar Gálvez; Rafael Escribano

Collaboration


Dive into the Yamilet Rodríguez-Lazcano's collaboration.

Top Co-Authors

Avatar

Belén Maté

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Rafael Escribano

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Víctor J. Herrero

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Óscar Gálvez

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Isabel Tanarro

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Miguel Ángel Moreno

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Alexandre Zanchet

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Delia Fernández-Torre

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Miguel Jiménez-Redondo

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Pedro C. Gómez

Complutense University of Madrid

View shared research outputs
Researchain Logo
Decentralizing Knowledge