spectral line

'spectral line' can also refer to...

spectral line

duchamp: a 3D source finder for spectral‐line data

On line contribution functions and examining spectral line formation in 3D model stellar atmospheres

Colour—magnitude relations and spectral line strengths in the Coma cluster

X-ray spectral complexity in narrow-line Seyfert 1 galaxies

Spectral estimates for Schrödinger operators with periodic matrix potentials on the real line

The 3 mm Spectral Line Survey toward the Lynds 1157 B1 Shocked Region. I. Data

A 8.8–50 GHz Complete Spectral Line Survey toward TMC-1 I. Survey Data

Low-Resolution Spectral Classification of Very Faint Emission-Line Galaxies

A derivative-free nonmonotone line search and its application to the spectral residual method

Optimizing commensality of radio continuum and spectral line observations in the era of the SKA

Spectral classification indicators of emission-line galaxies from the Sloan Digital Sky Survey

SoFiA: a flexible source finder for 3D spectral line data

Pulse-driven non-linear Alfvén waves and their role in the spectral line broadening

Modelling spectral line profiles of wind–wind shock emissions from massive binary systems

Investigating the nature of narrow-line Seyfert 1 galaxies with high-energy spectral complexity

Millimetre spectral line mapping observations towards four massive star-forming H ii regions

Identifying tools for comparing simulations and observations of spectral-line data cubes

Spectral luminosity indicators in Type Ia supernovae. Understanding the (Si ii) line-strength ratio and beyond


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Quick Reference

An emission or absorption line in a spectrum that arises when an electron moves between two energy levels in an atom. A jump to a higher level requires an input of energy, and produces a dark absorption line. A drop to a lower level releases energy, producing a bright emission line. At visible wavelengths, spectral lines from elements such as iron are largely due to jumps involving the outer electrons, but X-rays are produced from the inner electron shells. The precise wavelength (or energy) is a hallmark of the atom involved in producing the line.

Subjects: Astronomy and Astrophysics.

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