High-resolution broadband spectroscopy using externally dispersed interferometry at the Hale telescope: part 2, photon noise theory [PDF]
, 2016 High-resolution broadband spectroscopy at near-infrared (NIR) wavelengths (950 to 2450 nm) has been performed using externally dispersed interferometry (EDI) at the Hale telescope at Mt.
Edelstein, Jerry +6 more
core +2 more sources
Astrophotonic spectroscopy: defining the potential advantage [PDF]
, 2009 A photonic spectrograph can be much smaller than a conventional spectrograph with the same resolving power. Individual devices can be integrated with optical fibres to improve the multiplex gain in astronomical spectroscopy. Although experimental devices have been tested, the parameter space where integrated photonic spectrographs give a significant ...
arxiv +1 more source
X-ray spectroscopy of galaxy clusters: beyond the CIE modeling [PDF]
, 2018 X-ray spectra of galaxy clusters are dominated by the thermal emission from the hot intracluster medium. In some cases, besides the thermal component, spectral models require additional components associated, e.g., with resonant scattering and charge ...
Churazov, Eugene +5 more
core +3 more sources
The Xinglong 2.16-m Telescope: Current Instruments and Scientific Projects [PDF]
, 2016 The Xinglong 2.16-m reflector is the first 2-meter class astronomical telescope in China. It was jointly designed and built by the Nanjing Astronomical Instruments Factory (NAIF), Beijing Astronomical Observatory (now National Astronomical Observatories, Chinese Academy of Sciences, NAOC) and Institute of Automation, Chinese Academy of Sciences in 1989.
arxiv +1 more source
X-ray astronomical spectroscopy [PDF]
The contributions of the Goddard group to the history of X-ray astronomy are numerous and varied. One role that the group has continued to play involves the pursuit of techniques for the measurement and interpretation of the X-ray spectra of cosmic ...
Holt, Stephen S.
core +4 more sources
The 5.25 & 5.7 $\mu$m Astronomical Polycyclic Aromatic Hydrocarbon Emission Features
, 2008 Astronomical mid-IR spectra show two minor PAH features at 5.25 and 5.7 $\mu$m (1905 and 1754 cm$^{\rm - 1}$) that hitherto have been little studied, but contain information about the astronomical PAH population that complements that of the major ...
A. G. G. M. Tielens +33 more
core +1 more source
Hubble space telescope spectroscopy of four luminous compact blue galaxies at intermediate redshift [PDF]
, 2004 This is an electronic version of an article published in The Astronomical Journal. Hoyos, C. et al. Hubble space telescope spectroscopy of four luminous compact blue galaxies at intermediate redshift.
Bershady, M.A. +4 more
core +2 more sources
ESO VLT Optical Spectroscopy of BL Lac Objects IV. New spectra and properties of the full sample
, 2013 We present the last chapter of a spectroscopy program aimed at deriving the redshift or a lower limit to the redshift of BL Lac objects using medium resolution spectroscopy. Here we report new spectra for 33 BL Lac object candidates obtained in 2008-2009
Barattini, Martina +6 more
core +1 more source
Astronomical Anomalies: Their Role in the Quest for Extraterrestrial Life [PDF]
Published in "EdgeScience Magazine 49" on 15 March 2022 by the
Society for Scientific Exploration, 2023 Astronomers occasionally detect an object having unexpected shape, unexplainable photometry, or unprecedented spectra that are inconsistent with our contemporary knowledge of the universe. Upon careful assessment, many of these anomalies are discarded as mere noise, contamination, or faulty analysis.
arxiv
A User-oriented Comparison of the Techniques for 3D Spectroscopy [PDF]
arXiv, 2005 A comparison of the most popular techniques for 3D spectroscopy is presented in a way which should hopefully be useful for astronomers intending to use these techniques. Integral field spectroscopy, slitless spectroscopy, tunable imaging filters, imaging Fourier transform spectroscopy, and energy-resolving detectors are included in their different ...
arxiv