Four-colour photometry of eclipsing binaries. XLI

Autor: E. H. Olsen, B. E. Helt, Johannes Andersen, Luiz Paulo R. Vaz, A. Gimenez, J. V. Clausen, J. M. Garcia

Publikováno v: Astronomy & Astrophysics. 487:1081-1093

CONTEXT: Accurate mass, radius, and abundance determinations from binaries provide important information on stellar evolution, fundamental to central fields in modern astrophysics and cosmology. AIMS: Within the long-term Copenhagen Binary Project, w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47fba2c9f37e9e23750a915ecdd4491f
https://doi.org/10.1051/0004-6361:200809670

Near-Infrared Variability in the Orion Nebula Cluster

Autor: Nicholas Cross, Bo Reipurth, Scott J. Wolk, Luiz Paulo R. Vaz, Thomas S. Rice

Publikováno v: Rice, T S, Reipurth, B, Wolk, S J, Vaz, L P & Cross, N J G 2015, ' Near-Infrared Variability in the Orion Nebula Cluster ', Astronomical Journal . https://doi.org/10.1088/0004-6256/150/4/132

Using the United Kingdom Infrared Telescope on Mauna Kea, we have carried out a new near-infrared J, H, K monitoring survey of almost a square degree of the star-forming Orion Nebula Cluster with observations on 120 nights over three observing season

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77a5f356ef1c13c0dce1f2630bdf6eb9
https://hdl.handle.net/20.500.11820/4f27b812-379e-4fd1-bfb4-f6ec414164b0

Absolute Properties of the Main-Sequence Eclipsing Binary Star V885 Cygni

Autor: Claud H. Sandberg Lacy, Jeffrey A. Sabby, Luiz Paulo R. Vaz, Antonio Claret

Publikováno v: The Astronomical Journal. 128:1324-1330

We present 4179 differential observations in the V filter measured by a robotic telescope, as well as 25 pairs of radial velocities from high-resolution spectroscopic observations, of the detached, EB-type, 1.69 day period double-lined eclipsing bina

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::525af7ea9c1ca25a46c6ab1a32a7921e
https://doi.org/10.1086/423040

H Emission-Line Stars in Molecular Clouds. I. The NGC 2264 Region

Autor: John Bally, Bo Reipurth, Bertil Pettersson, Tina Armond, Luiz Paulo R. Vaz

Publikováno v: The Astronomical Journal. 127:1117-1130

We present a deep survey of H? emission-line stars in the NGC 2264 region using wide-field objective prism films. We find 357 H? emission-line stars, of which 113 were previously detected, within an area of 3? ? 3? centered on the Cone Nebula, with a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9aa75b60c05b82c6b3479614a9b12a36
https://doi.org/10.1086/380935

Near-infrared time-series photometry in the field of Cygnus OB2 association

Autor: J. Roquette, Luiz Paulo R. Vaz, Silvia H. P. Alencar, M. G. Guarcello, Jerome Bouvier

Publikováno v: Astronomy & Astrophysics. 603:A106

In the last decades, the early pre main sequence stellar rotational evolution picture has been constrained by studies targeting different young regions at a variety of ages. Observational studies suggest a mass-rotation dependence, and for some mass

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04a518797d62785bb65ac9e5df7d35c6
https://doi.org/10.1051/0004-6361/201630337