Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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...
Flame Photometry: Lab01:16

Flame Photometry: Lab

In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
Kepler's First Law of Planetary Motion01:10

Kepler's First Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
Fermi Level Dynamics01:12

Fermi Level Dynamics

The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
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...
Hess's Law03:40

Hess's Law

There are two ways to determine the amount of heat involved in a chemical change: measure it experimentally, or calculate it from other experimentally determined enthalpy changes. Some reactions are difficult, if not impossible, to investigate and make accurate measurements for experimentally. And even when a reaction is not hard to perform or measure, it is convenient to be able to determine the heat involved in a reaction without having to perform an experiment.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A rotating white dwarf shows different compositions on its opposite faces.

Nature·2023
Same author

Publisher Correction: A highly magnetized and rapidly rotating white dwarf as small as the Moon.

Nature·2021
Same author

A highly magnetized and rapidly rotating white dwarf as small as the Moon.

Nature·2021
Same author

The age of the Milky Way inner halo.

Nature·2012
Same author

The remnants of galaxy formation from a panoramic survey of the region around M31.

Nature·2009
Same author

Probing the faintest stars in a globular star cluster.

Science (New York, N.Y.)·2006

Related Experiment Video

Updated: Jun 17, 2026

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System
09:44

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Published on: June 5, 2014

Star clusters as laboratories for stellar and dynamical evolution.

Jason S Kalirai1, Harvey B Richer

  • 1Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA. jkalirai@stsci.edu

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|January 20, 2010
PubMed
Summary

Star clusters, once thought to be simple stellar populations, may actually host multiple stellar populations. Recent studies suggest self-enrichment processes shape their evolution, impacting stellar evolution understanding.

More Related Videos

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

Design and Use of Multiplexed Chemostat Arrays
19:40

Design and Use of Multiplexed Chemostat Arrays

Published on: February 23, 2013

Related Experiment Videos

Last Updated: Jun 17, 2026

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System
09:44

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Published on: June 5, 2014

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

Design and Use of Multiplexed Chemostat Arrays
19:40

Design and Use of Multiplexed Chemostat Arrays

Published on: February 23, 2013

Area of Science:

  • Astronomy and Astrophysics
  • Stellar Evolution
  • Star Cluster Dynamics

Background:

  • Star clusters (open and globular) are crucial benchmarks for stellar evolution studies.
  • They were traditionally assumed to be simple stellar populations (same age and metallicity).
  • Pioneering imaging studies established their importance.

Purpose of the Study:

  • To review recent studies challenging the simple stellar population model for star clusters.
  • To investigate the implications of multiple stellar populations within clusters.
  • To link cluster evolution to chemical enrichment and dynamical state.

Main Methods:

  • Review of recent imaging studies of star clusters.
  • Analysis of spectroscopic data from cluster stars.
  • Examination of theoretical models of stellar evolution and cluster dynamics.

Main Results:

  • Evidence suggests star clusters can harbor multiple stellar populations.
  • Self-enrichment by first-generation stars is a potential formation mechanism.
  • Stellar mass loss and cluster dynamics are key factors in interpreting evolution.

Conclusions:

  • The traditional view of star clusters as simple stellar populations is being challenged.
  • Understanding multiple populations is crucial for accurate stellar evolution models.
  • Integrated imaging, spectroscopic, and theoretical approaches are vital for future research.