Disk Imaging Survey of Chemistry with SMA: II. Southern Sky Protoplanetary Disk Data and Full Sample Statistics

Abstract

This is the second in a series of papers based on data from DISCS, a Submillimeter Array observing program aimed at spatially and spectrally resolving the chemical composition of 12 protoplanetary disks. We present data on six Southern sky sources - IM Lup, SAO 206462 (HD 135344b), HD 142527, AS 209, AS 205 and V4046 Sgr - which complement the six sources in the Taurus star forming region reported previously. CO 2-1 and HCO+ 3-2 emission are detected and resolved in all disks and show velocity patterns consistent with Keplerian rotation. Where detected, the emission from DCO+ 3-2, N2H+ 3-2, H2CO 3-2 and 4-3,HCN 3-2 and CN 2-1 are also generally spatially resolved. The detection rates are highest toward the M and K stars, while the F star SAO 206462 has only weak CN and HCN emission, and H2CO alone is detected toward HD 142527. These findings together with the statistics from the previous Taurus disks, support the hypothesis that high detection rates of many small molecules depend on the presence of a cold and protected disk midplane, which is less common around F and A stars compared to M and K stars. Disk-averaged variations in the proposed radiation tracer CN/HCN are found to be small, despite two orders of magnitude range of spectral types and accretion rates. In contrast, the resolved images suggest that the CN/HCN emission ratio varies with disk radius in at least two of the systems. There are no clear observational differences in the disk chemistry between the classical/full T Tauri disks and transitional disks. Furthermore, the observed line emission does not depend on measured accretion luminosities or the number of infrared lines detected, which suggests that the chemistry outside of 100 AU is not coupled to the physical processes that drive the chemistry in the innermost few AU.

accepted for publication in ApJ, 41 pages including 7 figures

References in corpus (18)

• Complex Chemistry in Star-Forming Regions: An Expanded Gas-Grain Warm-up Chemical Model
• Protoplanetary Disk Structures in Ophiuchus
• On the Diversity of the Taurus Transitional Disks: UX Tau A & Lk Ca 15
• Accretion Rates in Herbig Ae stars
• Spectro-astrometric imaging of molecular gas within protoplanetary disk gaps
• Photoprocesses in protoplanetary disks
• A Spitzer survey of mid-infrared molecular emission from protoplanetary disks I: Detection rates
• Gas and Dust Emission at the Outer Edge of Protoplanetary Disks
• Disk Imaging Survey of Chemistry with SMA (DISCS): I. Taurus Protoplanetary Disk Data
• Resolving the chemistry in the disk of TW Hydrae I. Deuterated species
• Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk
• First results of the Herschel Key Program 'Dust, Ice and Gas in Time': Dust and Gas Spectroscopy of HD 100546
• Modeling the gas-phase chemistry of the transitional disk around HD 141569A
• The Asymmetric Thermal Emission of Protoplanetary Disk Surrounding HD 142527 Seen by Subaru/COMICS
• Imaging the Molecular Disk Orbiting the Twin Young Suns of V4046 Sgr
• Molecules in the disk orbiting the twin young suns of V4046 Sgr
• Chemistry in Disks. II. -- Poor molecular content of the AB Aur disk
• Molecular content of the circumstellar disk in AB Aur: First detection of SO in a circumstellar disk

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