Benzene Formation in the Inner Regions of Protostellar Disks

2006/12/08 by Paul M. Woods, Karen Willacy
Chemistry · Physics and Astronomy · #Astro and Planetary Science #Astrochemistry #Astrophysics and Star Formation Studies #Benzene #Cosmochemistry #Fullerene Chemistry and Applications #Interstellar cloud #Interstellar medium #Molecular cloud #Protostar #astro-ph

paper · pdf · doi:10.1086/511680

published as Astrophys.J.655:L49-L52,2007 · 9 pages, 2 colour figures, to be published in the Astrophysical Journal Letters

arxiv created 2006/12/08 · openalex publication_date 2007/01/04 · arxiv updated 2011/02/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Benzene ( c- C 6 H 6 ) formation in the inner 3 AU of a protostellar disk can be efficient, resulting in high abundances of benzene in the midplane region. The formation mechanism is different to that found in interstellar clouds and in protoplanetary nebulae, and proceeds mainly through the reaction between allene (C 3 H 4 ) and its ion. This has implications for PAH formation, in that some fraction of PAHs seen in the solar system could be native rather than inherited from the interstellar medium.

Citations

• [ITAL]Infrared Space Observatory's[/ITAL] Discovery of C[TINF]4[/TINF]H[TINF]2[/TINF], C[TINF]6[/TINF]H[TINF]2[/TINF], and Benzene in CRL 618
• Models of Chemistry, Thermal Balance, and Infrared Spectra from Intermediate‐Aged Disks around G and K Stars
• Polycyclic Aromatic Hydrocarbons and Crystalline Silicates in the Bipolar Post–Asymptotic Giant Branch Star IRAS 16279−4757
• Accretion Disks around Young Objects. III. Grain Growth
• The Effects of UV Continuum and Ly Radiation on the Chemical Equilibrium of T Tauri Disks
• On the gas temperature in circumstellar disks around A stars
• C2D Spitzer-IRS spectra of disks around T Tauri stars. II. PAH emission features