The molecular composition of the planet-forming regions of protoplanetary disks across the luminosity regime

2015/07/31 by Catherine Walsh, Hideko Nomura, E. F. van Dishoeck +1 · 205 citations
Chemistry · Physics and Astronomy · #Accretion (finance) #Advanced Chemical Physics Studies #Astrochemistry #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Atmosphere (unit) #Chemical composition #Chemistry #Flux (metallurgy) #Interstellar medium #Luminosity #Molecular Spectroscopy and Structure #Physics #Planet #Protoplanetary disk #Stars #T Tauri star #astro-ph.EP #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201526751

published in Astronomy and Astrophysics 582, A88 (EDP Sciences) · 28 pages (including the Appendix); 23 figures (including 6 in the Appendix); accepted for publication in Astronomy & Astrophysics; Figure 1 axes labels fixed and small typos corrected

openalex publication_date 2015/07/31 · arxiv created 2015/09/02 · arxiv updated 2016/08/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Context. Near- to mid-infrared observations of molecular emission from protoplanetary disks show that the inner regions are rich in small organic volatiles (e.g., C2H2 and HCN). Trends in the data suggest that disks around cooler stars (Teff ≈ 3000 K) are potentially (i) more carbon-rich; and (ii) more molecule-rich than their hotter counterparts (Teff ≳ 4000 K).

Citations

• ASPITZERSURVEY OF MID-INFRARED MOLECULAR EMISSION FROM PROTOPLANETARY DISKS. II. CORRELATIONS AND LOCAL THERMAL EQUILIBRIUM MODELS
• CARBON ISOTOPE FRACTIONATION IN PROTOPLANETARY DISKS
• A model for gas phase chemistry in interstellar clouds. I - The basic model, library of chemical reactions, and chemistry among C, N, and O compounds
• Complex Chemistry in Star‐forming Regions: An Expanded Gas‐Grain Warm‐up Chemical Model
• Effects of Dust Growth and Settling in T Tauri Disks
• Flaring vs. self-shadowed disks: The SEDs of Herbig Ae/Be stars
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• Molecular oxygen in the ρ Ophiuchi cloud
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• The Origin of T Tauri X‐Ray Emission: New Insights from the Chandra Orion Ultradeep Project
• Chemistry in the Interstellar Medium
• H 2 O and OH Gas in the Terrestrial Planet-forming Zones of Protoplanetary Disks
• THE DIFFERENT EVOLUTION OF GAS AND DUST IN DISKS AROUND SUN-LIKE AND COOL STARS
• Formation rates of complex organics in UV irradiated CH3OH-rich ices
• Hot Organic Molecules toward a Young Low-Mass Star: A Look at Inner Disk Chemistry
• Formation of simple organic molecules in inner T Tauri disks
• The James Webb Space Telescope
• Evaluated Kinetic Data for Combustion Modeling: Supplement II
• Radiation thermo-chemical models of protoplanetary discs

Cited by

• Theoretical determination of the binding energies of methanol and related species onto amorphous solid water ice
• Detecting nitrogen-carriers in the inner regions of protoplanetary disks
• Quantifying the C/O Ratio in the Planet-forming Environments around Very Low Mass stars
• JWST's sharper view of EX Lup: cold water from ice sublimation during accretion outbursts
• CO2 infrared emission as a diagnostic of planet-forming regions of disks
• Observing Carbon and Oxygen Carriers in Protoplanetary Disks at Mid-infrared Wavelengths
• Linking Outer Disk Pebble Dynamics and Gaps to Inner Disk Water Enrichment
• Candidate Water Vapor Lines to Locate the H2O Snowline Through High-dispersion Spectroscopic Observations. II. The Case of a Herbig Ae Star

Related

• Chemistry in Protoplanetary Disks
• Quantifying the C/O Ratio in the Planet-forming Environments around Very Low Mass stars
• Molecular abundances and C/O ratios in chemically evolving planet-forming disk midplanes
• Gas composition of main volatile elements in protoplanetary discs and its implication for planet formation
• Gas chemistry in the dust depleted inner regions of protoplanetary disks. I. Near-IR spectra and overtones