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JournalISSN: 0185-1101

Revista Mexicana De Astronomia Y Astrofisica 

National Autonomous University of Mexico
About: Revista Mexicana De Astronomia Y Astrofisica is an academic journal published by National Autonomous University of Mexico. The journal publishes majorly in the area(s): Stars & Galaxy. It has an ISSN identifier of 0185-1101. Over the lifetime, 2002 publications have been published receiving 10168 citations.


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Journal Article
TL;DR: In this article, the authors studied the galaxy star formation rate as a function of environment using the SDSS EDR data and found that the suppression of the SFR starts to be noticeable at around 4 virial radii.
Abstract: We study the galaxy star formation rate (SFR) as a function of environment using the SDSS EDR data. We nd that the SFR is depressed in dense environments (clusters and groups) compared to the eld. We nd that the suppression of the SFR starts to be noticeable at around 4 virial radii. We nd no evidence for SF triggering as galaxies fall into the clusters. We also present a project to study these eects in cluster pairs systems where the eects of lamen ts and large scale structure may be noticeable.

546 citations

Journal Article
TL;DR: In this paper, a chemical evolution model for the Galaxy is presented, which assumes that the evolution of the halo and thick disk is completely disentangled from the thin disk.
Abstract: Resumen en: We present a chemical evolution model for the Galaxy which assumes that the evolution of the halo and thick disk is completely disentangled from the thin...

515 citations

Journal Article
TL;DR: Cloud as discussed by the authors models the ionization, chemical, and thermal state of material that may be exposed to an external radiation field or other source of heating, and predicts observables such as emission and absorption spectra.
Abstract: This is a summary of the 2013 release of the plasma simulation code Cloudy. Cloudy models the ionization, chemical, and thermal state of material that may be exposed to an external radiation field or other source of heating, and predicts observables such as emission and absorption spectra. It works in terms of elementary processes, so is not limited to any particular temperature or density regime. This paper summarizes advances made since the last major review in 1998. Much of the recent development has emphasized dusty molecular environments, improvements to the ionization/chemistry solvers, and how atomic and molecular data are used. We present two types of simulations to demonstrate the capability of the code. We consider a molecular cloud irradiated by an X-ray source such as an active nucleus and show how treating EUV recombination lines and the full SED affects the observed spectrum. A second example illustrates the very wide range of particle and radiation density that can be considered.

497 citations

Journal Article
TL;DR: The 2017 version of Cloudy as mentioned in this paper is the most recent version of the spectral synthesis code, which has made many improvements to the scope and accuracy of the physics which have been made since the previous release.
Abstract: We describe the 2017 release of the spectral synthesis code Cloudy , summa- rizing the many improvements to the scope and accuracy of the physics which have been made since the previous release. Exporting the atomic data into external data files has enabled many new large datasets to be incorporated into the code. The use of the complete datasets is not realistic for most calculations, so we describe the lim- ited subset of data used by default, which predicts significantly more lines than the previous release of Cloudy . This version is nevertheless faster than the previous release, as a result of code optimizations. We give examples of the accuracy limits using small models, and the performance requirements of large complete models. We summarize several advances in the H- and He-like iso-electronic sequences and use our complete collisional-radiative models to establish the densities where the coronal and local thermodynamic equilibrium approximations work.

293 citations

Journal Article
TL;DR: In this article, a simple and analytical model for the galactic mass distribution is presented, which improves upon a similar model proposed in Allen C. and Martos M.A. (1986, Rev.
Abstract: A realistic, yet very simple and analytical model for the galactic mass distribution is presented, which improves upon a similar model proposed in Allen C. and Martos M.A. (1986, Rev.Mex.A.A., 13). The new potential is completely analytical; the density can be obtained from it in closed form and it is positive everywhere. Extreme mathematical simplicity is retained, as well as a good representation of the observed values of both the rotation curve and the perpendicular force

223 citations

Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
20238
202230
202112
202024
201930
201823