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
  1. Home
  3. Research Domains

A 'dry' condensation origin for circumstellar carbonates.

Alice Toppani1, François Robert, Guy Libourel

  • 1Centre de Recherches Pétrographiques et Géochimiques-CNRS UPR 2300, 15 rue Notre Dame des Pauvres, BP 20, Vandoeuvre-les-Nancy, France. toppani2@llnl.gov

Nature
|October 21, 2005

Related Experiment Videos

View abstract on PubMed

Summary
This summary is machine-generated.

Related Concept Videos

  • Physical Sciences
  • Condensed Matter Physics
  • Surface Properties Of Condensed Matter
  • A 'dry' Condensation Origin For Circumstellar Carbonates.

    • Carbonate minerals, previously linked to water, can form abiogenically with silicates in space. This finding suggests new origins for cosmic carbonates in hot, dense stellar environments.

    Area of Science:

    • Astrochemistry
    • Planetary Science
    • Mineralogy

    Background:

    • Carbonate minerals are detected in astrophysical environments like protostars.
    • Abiogenic carbonates typically indicate aqueous alteration with CO2-rich water.
    • Recent detections in planetary nebulae and protostars challenge this indicator's relevance.

    Purpose of the Study:

    • To investigate an alternative formation pathway for astrophysical carbonates.
    • To explore the role of non-equilibrium condensation in carbonate formation.
    • To understand the origin of carbonates in environments lacking liquid water.

    Main Methods:

    • Experimental simulation of non-equilibrium condensation.
    • Condensation of silicate gas in a H2O-CO2-rich vapor.
    • Analysis of co-condensed amorphous silicates and carbonates.

    Main Results:

    • Demonstrated abiogenic formation of carbonates alongside amorphous silicates.
    • Successful co-condensation occurred during non-equilibrium processes.
    • Identified conditions favoring carbonate formation without liquid water.

    Conclusions:

    • Astrophysical carbonates may form via non-equilibrium condensation in space.
    • Proposed formation sites include evolved stellar winds and protostellar outflows.
    • This provides an alternative explanation for observed cosmic carbonates.

    Related Experiment Videos