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Lack of PAH emission toward low-mass embedded young stellar objects
V. C. Geers, E. F. van Dishoeck, K. M. Pontoppidan +4
PAHs have been detected toward molecular clouds and some young stars with disks, but have not yet been associated with embedded young stars. We present a sensitive mid-IR spectrosc…
Captured at Millimeter Wavelengths: a Flare from the Classical T Tauri Star DQ Tau
D. M. Salter, M. R. Hogerheijde, G. A. Blake
For several hours on 2008 April 19 the T Tauri spectroscopic binary DQ Tau was observed to brighten, reaching a maximum detected flux of 468 mJy and likely making it (briefly) the…
The TEXES Survey For H2 Emission From Protoplanetary Disks
M. A. Bitner, M. J. Richter, J. H. Lacy +9
We report the results of a search for pure rotational molecular hydrogen emission from the circumstellar environments of young stellar objects with disks using the Texas Echelon Cr…
Spectro-astrometric imaging of molecular gas within protoplanetary disk gaps
Klaus M. Pontoppidan, Geoffrey A. Blake, Ewine F. van Dishoeck +3
We present velocity-resolved spectro-astrometric imaging of the 4.7 m rovibrational lines of CO gas in protoplanetary disks using the CRIRES high resolution infrared spectromete…
Resolving the chemistry in the disk of TW Hydrae I. Deuterated species
C. Qi, D. J. Wilner, Y. Aikawa +2
We present Submillimeter Array (SMA) observations of several deuterated species in the disk around the classical T Tauri star TW Hydrae at arcsecond scales, including detections of…
LkH 330: Evidence for dust clearing through resolved submillimeter imaging
J. M Brown, G. A. Blake, C. Qi +2
Mid-infrared spectrophotometric observations have revealed a small sub-class of circumstellar disks with spectral energy distributions (SEDs) suggestive of large inner gaps with lo…