Search Results - "Costa, Edgardo"

Speckle Interferometry at SOAR in 2022 by Mason, Brian D., Tokovinin, Andrei, Mendez, Rene A., Costa, Edgardo

“…Abstract Results of the speckle-interferometry observations at the 4.1 m SOuthern Astrophysical Research Telescope obtained during 2022 are presented: 2508…”
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Speckle Interferometry at SOAR Telescope in 2023 by Tokovinin, Andrei, Mason, Brian D., Mendez, Rene A., Costa, Edgardo

“…Abstract Results of the speckle-interferometry observations at the 4.1 m Southern Astrophysical Research Telescope obtained during 2023 are presented: 1913…”
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Mass Ratio of Single-line Spectroscopic Binaries with Visual Orbits Using Bayesian Inference and Suitable Priors by Anguita-Aguero, Jennifer, Mendez, Rene A., Videla, Miguel, Costa, Edgardo, Vanzi, Leonardo, Castro-Morales, Nicolas, Caballero-Valdes, Camila

“…Abstract We present orbital elements for 22 single-line binaries, nine of them studied for the first time, determined from a joint spectroscopic and…”
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A Study of Eight Visual-spectroscopic Southern Binaries Using Recent SOAR Observations by Docobo, José A., Campo, Pedro P., Gómez, Jorge, Méndez, René A., Costa, Edgardo

“…Abstract Speckle observations performed between 2019 and 2022 with the HRCam attached to the 4.1 m SOAR telescope (Cerro Pachón, Chile) permitted to improve…”
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Speckle Interferometry at SOAR in 2021 by Tokovinin, Andrei, Mason, Brian D., Mendez, Rene A., Costa, Edgardo

“…Abstract The speckle interferometry program at the the 4.1 m Southern Astrophysical Research Telescope (SOAR), which started in 2008, now has accumulated over…”
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Mass Ratio of Single-line Spectroscopic Binaries with Visual Orbits Using Bayesian Inference and Suitable Priors Based in part on observations obtained at the Southern Astrophysical Research (SOAR) telescope, which is a joint project of the Ministério da Ciência, Tecnologia, e Inovaçãoes (MCTI) da República Federativa do Brasil, the U.S. National Optical Astronomy Observatory (NOAO), the University of North Carolina at Chapel Hill (UNC), and Michigan State University (MSU) by Anguita-Aguero, Jennifer, Mendez, Rene A., Videla, Miguel, Costa, Edgardo, Vanzi, Leonardo, Castro-Morales, Nicolas, Caballero-Valdes, Camila

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Orbital Elements and Individual Component Masses from Joint Spectroscopic and Astrometric Data of Double-line Spectroscopic Binaries Based in part on observations obtained at the international Gemini Observatory, a program of the NSF’s NOIRLab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation on behalf of the Gemini Observatory partnership: the National Science Foundation (United States), Natio by Anguita-Aguero, Jennifer, Mendez, Rene A., Clavería, Rubén M., Costa, Edgardo

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Orbital Elements and Individual Component Masses from Joint Spectroscopic and Astrometric Data of Double-line Spectroscopic Binaries by Anguita-Aguero, Jennifer, Mendez, Rene A., Clavería, Rubén M., Costa, Edgardo

“…Abstract We present orbital elements, orbital parallaxes, and individual component masses for 14 spatially resolved double-line spectroscopic binaries derived…”
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20 Orbits of binaries based on soar speckle observations by Gómez, Jorge, Docobo, José A, Campo, Pedro P, Andrade, Manuel, Mendez, Rene A, Costa, Edgardo

“…ABSTRACT New observational data obtained during the 2018, 2019, and 2020 speckle runs with the 4.1-m Southern Astrophysical Research (SOAR) telescope located…”
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Breaking the curtain: the old open cluster VdB-Hagen 67 in the background of the Vela Molecular Ridge by Carraro, Giovanni, Costa, Edgardo

“…We present optical and infrared photometry for VdB-Hagen 67, an overlooked old open cluster located at , J2000.0) in the fourth Galactic quadrant, in the…”
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Breaking the curtain: the old open cluster VdB-Hagen 67 in the background of the Vela Molecular Ridge by Carraro, Giovanni, Costa, Edgardo

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Orbits of 14 binaries based on 2018 SOAR speckle observations by Docobo, José A, Gomez, Jorge, Campo, Pedro P, Andrade, Manuel, Horch, Elliott P, Costa, Edgardo, Mendez, Rene A

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On the assessment of the nature of open star clusters and the determination of their basic parameters with limited data by Carraro, Giovanni, Baume, Gustavo, Seleznev, Anton F., Costa, Edgardo

“…Our knowledge of stellar evolution and of the structure and chemical evolution of the Galactic disk largely builds on the study of open star clusters. Because…”
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NGC 4337: an overlooked old cluster in the inner disc of the Milky Way by Carraro, Giovanni, Giorgi, Edgard E., Costa, Edgardo, Vázquez, Ruben A.

“…Abstract Galactic open clusters do not survive long in the high-density regions of the inner Galactic disc. Inside the solar ring only 11 open clusters are…”
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The Edge of the Young Galactic Disk by Carraro, Giovanni, Vázquez, Ruben A, Costa, Edgardo, Perren, Gabriel, Moitinho, André

“…In this work, we report and discuss the detection of two distant diffuse stellar groups in the third Galactic quadrant. They are composed of young stars, with…”
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Old Main-Sequence Turnoff Photometry in the Small Magellanic Cloud. II. Star Formation History and its Spatial Gradients by Noël, Noelia E. D, Aparicio, Antonio, Gallart, Carme, Hidalgo, Sebastián L, Costa, Edgardo, Méndez, René A

“…We present a quantitative analysis of the star formation history (SFH) of 12 fields in the Small Magellanic Cloud (SMC) based on unprecedented deep [(B - R),…”
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Synchronous Adenocarcinoma and Lymphoma of the Gallbladder: A Case Report by Parra-Medina, Rafael, López Correa, Patricia, Castro Quiroga, Paula, Castro Arbelaez, Andrés, Yaspe Costa, Edgardo

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Carcinoma prostático: factores prequirúrgicos asociados con extensión extraprostática y márgenes positivos hospital de San José, Bogotá DC, Colombia by Edgardo Yaspe Costa, Carolina Silva Morera, Patricia López Correa

“…El cáncer de próstata es causa importante de mortalidad y es invaluable la estadificación adecuada de los pacientes para minimizar las complicaciones del…”
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New S Stars Found in a Southern Galactic Plane Survey by MacConnell, D. Jack, Wing, Robert F., Costa H., Edgardo

“…Based upon the presence of bands of ZrO and LaO, four new S stars have been identified. They were found among more than 700 red spectrograms of cool stars in a…”
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Proper Motions of Local Group Dwarf Spheroidal Galaxies I: First Ground-Based Results for Fornax by MENDEZ, ReNÉ A, COSTA, Edgardo, PEDREROS, Mario H, MOYANO, Maximiliano, ALTMANN, Martin, GALLART, Carme

“…In this article we present in detail the methodology and the first results of a ground-based program to determine the absolute proper motion of the Fornax…”
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