Buscar
Mostrando ítems 1-10 de 23
On the epoch of the Antikythera mechanism and its eclipse predictor
(Springer, 2014-11)
The eclipse predictor (or Saros dial) of the Antikythera mechanism provides a wealth of astronomical information and offers practically the only possibility for a close astronomical dating of the mechanism. We apply a ...
Las cámaras robóticas MASTER-ICATE
(Asociación Argentina de Astronomía, 2012-04)
En este art´ıculo presentamos los principios b´asicos de funcionamiento y caracter´ısticas de las c´amaras de campo amplio VWF-2 instaladas en MASTER-ICATE. Las c´amaras, la montura y el domo pueden operarse en forma remota, ...
Microvariability in AGNs: study of different statistical methods II. Light curves from simulated images
(Wiley Blackwell Publishing, Inc, 2020-08)
In a previous paper, we studied two statistical methods used to analyse the variability of active galactic nuclei (AGNs): the C and F statistics. Applying them to observed differential light-curves of 39 AGNs, we found ...
A close encounter of the massive kind
(Wiley Blackwell Publishing, Inc, 2017-01)
We have used (a) HST ACS imaging and STIS spectroscopy, (b) ground-basedPIONIER/VLT long-baseline interferometry, and (c) ground-basedspectroscopy from different instruments to study the orbit of theextreme multiple system ...
The final date of the Antikythera mechanism
(Science History Publications Ltd, 2017-08)
The Antikythera mechanism is a mechanical astronomical instrument that was discovered in an ancient shipwreck (from about 60 bce) at the beginning of the twentieth century. A consensus does not exist on the question of ...
Turbulence characterization by studying laser beam wandering in a differential tracking motion setup
(Society of Photo-Optical Instrumentation Engineers, 2009-10-01)
The Differential Image Motion Monitor (DIMM) is a standard and widely used instrument for astronomical seeing measurements. The seeing values are estimated from the variance of the differential image motion over two equal ...
Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
(Astronomical Society of the Pacific, 2005-12)
We present a novel approach for a definition of the phase space of the Milky Way HI disk and its associated gaseous halo. We discuss how model and observations can be used to discriminate between disk, disk-halo interface ...
Carnegie supernova project-II: The near-infrared spectroscopy program
(The Astronomical Society of the Pacific, 2019-01)
Shifting the focus of Type Ia supernova (SN Ia) cosmology to the near infrared (NIR) is a promising way to significantly reduce the systematic errors, as the strategy minimizes our reliance on the empirical width-luminosity ...
Low threshold acquisition controller for Skipper charge-coupled devices
(SPIE.Digital Library, 2021-06-21)
The development of the Skipper-charge-coupled devices (Skipper-CCDs) has been a major technological breakthrough for sensing very weak ionizing particles. The sensor allows to reach the ultimate sensitivity of silicon ...
G5.89: An explosive outflow powered by a proto-stellar merger?
(Oxford University Press, 2019-06)
The explosive outflows are a newly discovered family of molecular outflows associated with high-mass star-forming regions. Such energetic events are possibly powered by the release of gravitational energy related with the ...