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Related Concept Videos

Emission Spectra02:39

Emission Spectra

When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
Interaction of EM Radiation with Matter: Spectroscopy01:12

Interaction of EM Radiation with Matter: Spectroscopy

Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...

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Updated: Jun 20, 2026

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Method to reconstruct exoplanetary spectrum.

N Zubko1, N Baba, H Shibuya

  • 1Division of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan. nzubko@eng.hokudai.ac.jp

Optics Letters
|August 18, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces a novel spectroscopic method for exoplanet detection. The technique successfully reconstructs exoplanetary spectra by analyzing coronagraphic observations, aiding in the search for extraterrestrial life.

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Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy

Published on: June 27, 2014

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Last Updated: Jun 20, 2026

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

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Published on: May 10, 2020

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
10:03

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy

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Area of Science:

  • Astronomy and Astrophysics
  • Exoplanetary Science
  • Spectroscopy

Background:

  • Spectroscopic analysis is crucial for characterizing exoplanets.
  • Directly observing faint exoplanetary spectra is challenging due to stellar glare.

Purpose of the Study:

  • To develop and demonstrate a new method for obtaining exoplanetary spectra.
  • To enable the detection of distinctive features in planetary atmospheres.

Main Methods:

  • Simultaneous observation of star-planet systems using coronagraphy.
  • Acquisition of reference stellar spectra without coronagraphic suppression.
  • Synthesis of pseudo-objective spectra via convolution.
  • Subtraction of synthesized spectra from observed data to isolate planetary signatures.

Main Results:

  • Successful laboratory demonstration of the proposed spectroscopic technique.
  • Reconstruction of the exoplanetary spectrum.
  • Validation of the method's ability to reveal planetary features.

Conclusions:

  • The presented method offers a viable approach for exoplanetary spectroscopy.
  • This technique can enhance the characterization of exoplanets and the search for biosignatures.