Results 31 to 40 of about 138,479 (95)

Carnegie Supernova Project-II: The Near-infrared Spectroscopy Program

open access: yes, 2018
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 relation and uncertain dust ...
Anderson, J. P.   +44 more
core   +1 more source

HERMES at Mercator, competitive high-resolution spectroscopy with a small telescope [PDF]

open access: yes, 2013
HERMES, a fibre-fed high-resolution (R=85000) echelle spectrograph with good stability and excellent throughput, is the work-horse instrument of the 1.2-m Mercator telescope on La Palma. HERMES targets building up time series of high-quality data of variable stellar phenomena, mainly for asteroseismology and binary-evolution research.
arxiv   +1 more source

Comb-calibrated solar spectroscopy through a multiplexed single-mode fiber channel [PDF]

open access: yes, 2015
We investigate a new scheme for astronomical spectrograph calibration using the laser frequency comb at the Solar Vacuum Tower Telescope on Tenerife. Our concept is based upon a single-mode fiber channel, that simultaneously feeds the spectrograph with ...
Doerr, H-P   +9 more
core   +3 more sources

3D Spectroscopy and the Virtual Observatory [PDF]

open access: yesarXiv, 2007
Integral field, or 3D, spectroscopy is the technique of obtaining spectral information over a two-dimensional, hopefully contiguous, field of view. While there is some form of astronomical 3D spectroscopy at all wavelengths, there has been a rapid increase in interest in optical and near-infrared 3D spectroscopy.
arxiv  

Common Methods of Stellar Spectra Analysis and their Support in Virtual Observatory [PDF]

open access: yesProceedings of EURO-VO Workshop Astronomical Spectroscopy and Virtual Observatory, ESAC, 21-23 March 2007, Villafranca del Castillo, 97-104, 2011
The proper scientific analysis of a large amount of stellar spectra requires certain capabilities of the analysing tool (e.g. precise semi-automatic fitting for normalisation of the continuum or line-list assisted measurement of spectral lines) as well as flexible list-driven datafile handling.
arxiv  

High Sensitivity, High Spectral Resolution, Mid-infrared Spectroscopy [PDF]

open access: yesarXiv, 2001
We broadly discuss mid-infrared spectroscopy and detail our new high spectral resolution instrument, the Texas Echelon-cross-Echelle Spectrograph (TEXES).
arxiv  

A program of astronomical infrared spectroscopy from aircraft [PDF]

open access: yes
Astronomical infrared spectroscopy from ...
Forbes, F. F.   +2 more
core   +1 more source

The missing conformer: A comprehensive rotational spectroscopy study and astronomical search of two conformers of methyl cyanoacetate [PDF]

open access: gold, 2022
Gayatri Batra   +6 more
openalex   +1 more source

Infrared heterodyne spectroscopy for astronomical purposes [PDF]

open access: yes
Heterodyne infrared astronomy was carried out using CO2 lasers and some solid state tunable lasers. The best available detectors are mercury cadmium telluride photodiodes.
Townes, C. H.
core   +1 more source

Astrophotonic Technologies [PDF]

open access: yesProc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130950R (28 August 2024)
Over the past two decades, photonics have been developed as technological solutions for astronomical instrumentation for, e.g., near-infrared spectroscopy and long baseline interferometry. With increasing instrument capabilities, large quantities of high precision optical components are required to guide, manipulate, and analyze the light from ...
arxiv   +1 more source

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