Warm HCN, C2H2, and CO in the disk of GV Tau

Abstract

We present the first high-resolution, ground-based observations of HCN and C2H2 toward the T Tauri binary star system GV Tau. We detected strong absorption due to HCN nu_3 and weak C2H2 (nu_3 and nu_2 + (nu_4 + nu_5)^0_+) absorption toward the primary (GV Tau S) but not the infrared companion. We also report CO column densities and rotational temperatures, and present abundances relative to CO of HCN/CO ~0.6% and C2H2/CO ~1.2% and an upper limit for CH4/CO < 0.37% toward GV Tau S. Neither HCN nor C2H2 were detected toward the infrared companion and results suggest that abundances may differ between the two sources.

arXiv comment23 pages, 6 figures, accepted by ApJ

References in corpus (8)

• On the Evolutionary Status of Class I Stars and Herbig-Haro Energy Sources in Taurus-Auriga
• Warm Molecular Layers in Protoplanetary Disks
• Hot Organic Molecules Toward a Young Low-Mass Star: A Look at Inner Disk Chemistry
• High Resolution 4.7 um Keck/NIRSPEC Spectra of Protostars. I: Ices and Infalling Gas in the Disk of L1489 IRS
• CO Line Emission and Absorption from the HL Tau Disk: Where is all the dust?
• Dust Stratification in Young Circumstellar Disks
• The near-infrared and ice-band variability of Haro 6-10
• Imaging the Haro 6-10 Infrared Companion

Cited by in corpus (38)

• Chemical Processes in Protoplanetary Disks
• The molecular composition of the planet-forming regions of protoplanetary disks across the luminosity regime
• The Different Evolution of Gas and Dust in Disks around Sun-like and Cool Stars
• Organic Molecules and Water in the Inner Disks of T Tauri Stars
• Carbon isotope fractionation in protoplanetary disks
• Formation of simple organic molecules in inner T Tauri disks
• Deuterium chemistry in protoplanetary disks II The inner 30 AU
• Nitrogen isotope fractionation in protoplanetary disks
• First Detection of Near-Infrared Line Emission from Organics in Young Circumstellar Disks
• Chemical evolution of protoplanetary disks - the effects of viscous accretion, turbulent mixing and disk winds
• CO2 infrared emission as a diagnostic of planet-forming regions of disks
• Ro-vibrational excitation of an organic molecule (HCN) in protoplanetary disks
• The chemistry of disks around T Tauri and Herbig Ae/Be stars
• The TEXES Survey For H2 Emission From Protoplanetary Disks
• The Peculiar Volatile Composition of Comet 8P/Tuttle: A Contact Binary of Chemically Distinct Cometesimals?
• Formation of interstellar propanal and 1-propanol ice: a pathway involving solid-state CO hydrogenation
• Comet C/2004 Q2 (MACHHOLZ): Parent Volatiles, a Search for Deuterated Methane, and Constraint on the CH4 Spin Temperature
• A new raytracer for modeling AU-scale imaging of lines from protoplanetary disks
• Effects of accretion flow on the chemical structure in the inner regions of protoplanetary disks
• Exploring organic chemistry in planet-forming zones
• Stellar and Circumstellar Properties of the Pre-Main Sequence Binary GV Tau from Infrared Spectroscopy
• Desorption Kinetics and Binding Energies of Small Hydrocarbons
• Multi-wavelength observations of the young binary system Haro 6-10: The case of misaligned discs
• c2d Spitzer IRS spectra of embedded low-mass young stars: gas-phase emission lines
• Observational diagnostics of gas in protoplanetary disks
• Formation of S-bearing complex organic molecules in interstellar clouds via ice reactions with C2H2, HS, and atomic H
• Gas and Dust Toward DG Tau B and VV CrA
• Constraining the Disk Masses of the Class I Binary Protostar GV Tau
• Spectrally Resolved Mid-Infrared Molecular Emission from Protoplanetary Disks and the Chemical Fingerprint of Planetesimal Formation
• H${}_2$S observations in young stellar disks in Taurus
• High-Resolution Mid-Infrared Spectroscopy of GV Tau N: Surface Accretion and Detection of Ammonia in a Young Protoplanetary Disk
• Warm HCN in the planet formation zone of GV Tau N
• Gas kinematics of key prebiotic molecules in GV Tau N revealed with an ALMA, PdBI, and Herschel synergy
• A Proper Motion Study of the Haro 6-10 Outflow: Evidence for a Subarcsecond Binary
• Gas and Dust Absorption in the DoAr 24E System
• The effect of carbon grain destruction on the chemical structure of protoplanetary disks
• First Detection of HC5N in a Class II Disk around TW Hya
• Protoplanetary Disk Chemistry