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Astronomical Spectroscopy [PDF]

open access: green, 2013
Spectroscopy is one of the most important tools that an astronomer has for studying the universe. This chapter begins by discussing the basics, including the different types of optical spectrographs, with extension to the ultraviolet and the near-infrared.
Philip Massey, Margaret M. Hanson
core   +5 more sources

Laboratory detection and rotational spectroscopy of trans-HNSO: implications for astronomical observations [PDF]

open access: goldFrontiers in Chemistry
Sulfur-bearing molecules are central to interstellar chemistry, yet their observed abundances in the gas phase remain far below cosmic expectations in dense interstellar regions.
Valerio Lattanzi   +4 more
doaj   +4 more sources

Random Access Addressing of MEMS Electrostatic Shutter Array for Multi-Object Astronomical Spectroscopy [PDF]

open access: yesMicromachines, 2020
An extended version of cross-bar type addressing technique is developed for three-port electrostatic micro shutters arranged in an arrayed format. A microelectromechanical systems (MEMS) shutter blade suspended by a pair of torsion beams works as a ...
Xufeng Liu   +4 more
doaj   +2 more sources

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

open access: goldFrontiers in Astronomy and Space Sciences, 2022
We performed a comprehensive investigation of methyl cyanoacetate (MCA) using high-resolution Fourier transform rotational spectroscopy. Two low energy conformers of MCA were observed in the vibrational ground state, in selected frequency regions from 2 ...
Gayatri Batra   +9 more
doaj   +2 more sources

Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides [PDF]

open access: yesNature Communications
Astronomical precision spectroscopy underpins searches for life beyond Earth, direct observation of the expanding Universe and constraining the potential variability of physical constants on cosmological scales.
Markus Ludwig   +23 more
doaj   +2 more sources

X-ray astronomical spectroscopy. [PDF]

open access: greenExploring the Universe, 1987
The current status of the X-ray spectroscopy of celestial X-ray sources, ranging from nearby stars to distant quasars, is reviewed. Particular emphasis is placed on the role of such spectroscopy as a useful and unique tool in the elucidation of the physical parameters of the sources.
Stephen S. Holt
openalex   +2 more sources

Vibrational Spectroscopy of and in the Mid-infrared: A Comparison with Astronomical Observations

open access: goldThe Astrophysical Journal
In recent years, astronomical observations, in combination with laboratory spectra and theoretical modeling, have confirmed the presence of C _60 , ${{\rm{C}}}_{60}^{+}$ and C _70 across a broad range of astrophysical objects. Despite expectations that ${
Thomas E. Douglas-Walker   +2 more
doaj   +2 more sources

Comprehensive Analysis of a Symbiotic Candidate V503 Her

open access: yesThe Astronomical Journal, 2023
V503 Her was previously proposed as an eclipsing symbiotic candidate based on photometric behavior and spectroscopic appearance indicating the composite optical spectrum.
Jaroslav Merc   +12 more
doaj   +1 more source

Dispersion Characteristics of the Multi-mode Fiber-fed VIPA Spectrograph

open access: yesThe Astronomical Journal, 2023
A high-resolution ( ${ \mathcal R }\gt {10}^{5}$ ), multi-mode fiber-fed spectrograph on large telescopes with a reasonable size is desirable in astronomy.
Xiaoming Zhu   +4 more
doaj   +1 more source

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