New Advances in Nebular Spectroscopy of Heavy Elements

Authors
Dr.
Nicholas C. Sterling
Date and time
7 Jul 2015 - 12:30 Europe/London
Address

Aula

Talk language
English
Slides language
English
Serie number
1
Description

The origins of neutron(n)-capture elements (atomic number Z > 30) have historically been discerned from the interpretation of stellar spectra. However, in the last decade nebular spectroscopy has been demonstrated to be a potentially powerful new tool to study the nucleosynthesis of n-capture elements. In this talk, I will discuss exciting new advances made in this field with near-infrared and optical observations of planetary nebulae, and atomic data investigations that enable the analysis of spectroscopic data.

Talk Video
https://youtu.be/lDSafC7s7-I
Astrochemistry
Planetary nebulae
Nebulae

It may interest you

  • Tracing the Chemical Evolution of Metals in local Star-Forming Galaxies: aperture effects and abundance patterns
    Nebular emission lines are a powerful diagnostic tool for tracing the chemical evolution in star-forming galaxies (SFGs) across cosmic time. Due to their proximity, SGFs are ideal for studying the physical properties, stellar population, and nebular gas in much more detail. The COS Legacy Spectroscopy SurveY (CLASSY) is a treasury survey that
    Dr.
    Karla Z. Arellano-Cordova

    Pleyades

    5 Sep 2023 - 10:30 Europe/London
    Past
    Talk Video
    https://youtu.be/jpvOD2fVm-I
  • Temperature inhomogeneities cause the abundance discrepancy in H II regions
    H II regions, ionized nebulae associated to massive star formation, exhibit a wealth of emission lines that are the fundamental basis for estimating the chemical composition of the Universe. For more than 80 years, a discrepancy of a factor of around two between heavy-element abundances derived with collisional excited lines (CELs) and the weaker
    Dr.
    J.Eduardo Méndez-Delgado

    Aula

    13 Jun 2023 - 12:30 Europe/London
    Past
  • The complex Milky Way history
    In this seminar I will focus on how the avalanche of new data changes our views on how our Galaxy formed and evolved. Precise astrometric, spectroscopic, photometric and asteroseismic data can be combined to pin down different processes that have shaped the Milky Way. This data will be discussed and illustrated with examples of what is possible to

    Aula

    8 Jun 2023 - 10:30 Europe/London
    Past
    Talk Video
    https://youtu.be/Or79N9L25so