Zobrazeno 1 - 10 of 19 pro vyhledávání: '"C. Plascencia"'
1
Akademický článek
STROMGREN PHOTOMETRY AND SEARCH FOR SHORT PERIOD VARIABLES IN THE OPEN CLUSTERS NGC 6910 AND NGC 6913
Autor: J. H. Pena, R. Peniche, A. Garcia Cole, J. C. Plascencia, L. Parrao, R. Pena
Publikováno v: Odessa Astronomical Publications, Vol 14, Iss 0, Pp 159-161 (2017)
Analysis of the absolute uvby photometry of the Open Clusters NGC 6910 and NGC 6913 show well-defined peaks that clearly define the accumulation of stars. Differential photometry of five stars in the direction of each cluster determines that at least
Externí odkaz: https://doaj.org/article/2c550c5a811a4e58bd475c5773e93c80
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5
Akademický článek
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6
A Study of the Variability of Water Maser Emission in a Sample of Young Stellar Objects
Autor: A. Ricalde, M. A. Trinidad, Luis F. Rodríguez, J. C. Plascencia, V. Rojas, Salvador Curiel
Publikováno v: Universidad Nacional Autónoma de México
UNAM
Redalyc-UNAM
Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.39
We present results of water maser observations in a sample of young stellar objects. The observations were made using the Haystack 37 m antenna during a span of time of about eight months. The sample was selected to study the variability of the water
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::518e3a5325745087083b4d447ba39d8f
http://www.redalyc.org/articulo.oa?id=57139216
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7
Searching for Chambers and Caves in Teotihuacan’s Sun Pyramid
Autor: Matías Moreno, M. Rangel, M. Villoro, J. C. Plascencia, Varlen Grabski, E. Arrieta, A. D. Becerril, Ernesto Belmont, I. Carrillo, Ruben Alfaro, O. Esquivel
Publikováno v: AIP Conference Proceedings.
In this work a status report of a search for caves in the Sun pyramid in Teotihuacan, Mexico is presented. From an archeological perspective the main goal is to gather evidence to determine whether the pyramid was a state or a funerary temple. The ge
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71b48385644b5f7f0df2153e753c6ec8
https://doi.org/10.1063/1.1594373
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8
Measurement of the dispersion law for hydrophobic silica aerogel SP-25
Autor: Arturo Alejandro Menchaca-Rocha, J.M. Hernández, R. Núñez, M. Buénerd, E. Camarillo, M. F. Villoro, J. C. Plascencia
Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2002, 480, pp.456-462. ⟨10.1016/S0168-9002(01)00956-1⟩
Optical properties of hydrophobic silica aerogel SP-25 have been measured. These include: a seven point dispersion law n(λ=266.2−514.5 nm ) , absorbance, luminescence and other physical properties. The effect of chromatic dispersion on velocity re
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfb63984bd0d041f60cf3425cdd3fa34
http://hal.in2p3.fr/in2p3-00011443
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9
Mexican participation in the AMS project
Autor: J. C. Plascencia, R. Núñez, A. Menchaca-Rocha, M. Buenerd, M. F. Villoro, J. I. Cabrera, O. Esquivel, T. Reyes, C. Canizal
Publikováno v: Observing Ultrahigh Energy Cosmic Rays from Space and Earth
International Workshop on Observing Ultrahigh Energy Cosmic Rays from Space and earth
International Workshop on Observing Ultrahigh Energy Cosmic Rays from Space and earth, Aug 2000, Metepec, Puebla, Mexico. pp.172-183
Optical characterization of hydrophobic silica aerogel SP-25 for the RICH, and a scheme to generate particle-ID conditions on TOF and Tracker amplitude data are reported, as part of a Mexican effort to contribute to the AMS Project.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0e0b9590590f7c004766c46d9e9fe61
http://hal.in2p3.fr/in2p3-00011083
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10
Do the Pre-Main Sequence δ Scuti Stars Really Exist?
Autor: T. Valdes, C. de La Cruz, L. Parrao, I. Prada, F. Cervantes, J. C. Plascencia, María del Rosario Ayala Carrillo, R. Peniche, A. García Cole, J. P. Sareyan, J. H. Pena, M. A. Hobart
Publikováno v: International Astronomical Union Colloquium. 185:346-347
Recently, new views of the current status of δ Scuti stars have been developed by Rodríguez & Breger (2001) who carried out an excellent review, listing 8 pre-main-sequence (PMS) δ Scuti candidates and examined the possibility of the existence of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::178d64001484108a55fdf67be47438f4
https://doi.org/10.1017/s0252921100016468
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