The variation of the electron density with position in a selected group of bright giant extragalactic H II regions has been studied using long slit spectrophotometry at high spectral and spatial resolution. Density values for the ionized gas of the regions have been obtained from the measurement of the forbidden S II 6717, 6731 A ratio. It is
This section contains the publications database that collects IAC articles published in scientific journals. Please, click on the arrow to see full search filter and sort options: author, journal, year, etc..
It also provides access to IAC Preprints Repository here: https://research.iac.es/preprints/
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Density studies of giant extragalactic H II regionsCastaneda, Hector O. et al.91990
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Design and initial test results of a CCD fan-out board with integrated preamplifier and ESD protection for the scientific instrument ELMER at the GTC 10-m telescope
The scientific instrument ELMER for the GTC 10-m telescope integrates an E2V Technologies CCD44-82 detector and can optionally use the MIT/LL CCID-20 device. Fan-out electronics have been developed that support both detectors reusing the same PCB design and cabling. The main system component, the fan-out board, provides dual-channel input clamp and
Suárez Valles, Marcos et al.Advertised on:
92004 -
Design concept of the electrical ground support equipment for the AIV and calibration of the Euclid NISP instrument
The Near Infrared Spectro-Photometer (NISP) on board the Euclid ESA mission will be developed and tested at various levels of integration using various test equipment which shall be designed and procured through a collaborative and coordinated effort. In this paper we describe the Electrical Ground Support Equipment (EGSE) which shall be required
Trifoglio, Massimo et al.Advertised on:
92012 -
Design of the J-PAS and J-PLUS filter systems
J-PAS (Javalambre-PAU Astrophysical Survey) is a Spanish-Brazilian collaboration to conduct an innovative photometric survey of more than 8000 square degrees of northern sky using a system of 57 filters, 54 narrow-band (FWHM=13.8 nm) filters continuously populating the spectrum between 370 to 920 nm with 10.0 nm steps, plus 3 broad-band filters
Marín-Franch, A. et al.Advertised on:
92012 -
Design-considerations For A Ground-based Transit Survey To Find Habitable Planets Around L And T Dwarfs
Detection of planets in the habitable zone is one of the key drivers of the exoplanet science community. We present a detailed strategy for such detection around L and T dwarfs. We plan to implement the outcome of the analysis as a transit survey to search for planets around known L and T dwarfs. Understanding of the variability of these cool
Tata, R. et al.Advertised on:
92011 -
Detailed Bayesian Analysis of the CoRoT-7 Lightcurve
With a mass of 7.4 Earth masses and radius of 1.6 Earth radii, CoRoT-7b is among the smallest transiting planets found to date. Due to its small size, the transit signal is very shallow, which makes the estimation of the planetary parameters from the light curve challenging. We carry out a Bayesian analysis of the CoRoT-7b lightcurve using a
Parviainen, H. et al.Advertised on:
92011