Chemistry in protoplanetary disks (short review in Russian)

Abstract

(English) In this lecture I discuss recent progress in the understanding of the chemical evolution of protoplanetary disks that resemble our Solar system during the first ten million years. At the verge of planet formation, strong variations of temperature, density, and radiation intensities in these disks lead to a layered chemical structure. In hot, dilute and heavily irradiated atmosphere only simple radicals, atoms, and atomic ions can survive, formed and destroyed by gas-phase processes. Beneath the atmosphere a partly UV-shielded, warm molecular layer is located, where high-energy radiation drives rich chemistry, both in the gas phase and on dust surfaces. In a cold, dense, dark disk midplane many molecules are frozen out, forming thick icy mantles where surface chemistry is active and where complex (organic) species are synthesized.

arXiv comment28 pages, 1 figure, 3 tables, written in Russian

References in corpus (12)

• Probing the structure of protoplanetary disks: a comparative study of DM Tau, LkCa 15 and MWC 480
• Photoprocesses in protoplanetary disks
• H2O and OH gas in the terrestrial planet-forming zones of protoplanetary disks
• Organic molecules in protoplanetary disks around TTauri and HerbigAe stars
• The formation and evolution of planetary systems: Grain growth and chemical processing of dust in T Tauri systems
• Axi-symmetric models of ultraviolet radiative transfer with applications to circumstellar disk chemistry
• Hot Organic Molecules Toward a Young Low-Mass Star: A Look at Inner Disk Chemistry
• Chemistry in disks I - Deep search for N${}_2$H${}^{+}$ in the protoplanetary disks around LkCa 15, MWC 480, and DM Tau
• Chemistry in Disks. III. -- Photochemistry and X-ray driven chemistry probed by the ethynyl radical (CCH) in DM Tau, LkCa 15, and MWC 480
• Detection of CH+ emission from the disc around HD100546
• Interferometric Observations of Formaldehyde in the Protoplanetary Disk around LkCa15
• The Chemical Evolution of Protoplanetary Disks