Publications (4)
The afterglow, the redshift, and the extreme energetics of the gamma-ray burst 990123
S. R. Kulkarni, S. G. Djorgovski, S. C. Odewahn +26
Afterglow, or long-lived emission, has now been detected from about a dozen well-positioned gamma-ray bursts. Distance determinations made by measuring optical emission lines from…
Weak-line T Tauri Star Disks I. Initial Spitzer Results from the Cores to Disks Legacy Project
D. L. Padgett, L. Cieza, K. R. Stapelfeldt +17
Using the Spitzer Space Telescope, we have observed 90 weak-line and classical T Tauri stars in the vicinity of the Ophiuchus, Lupus, Chamaeleon, and Taurus star-forming regions as…
The c2d Spitzer Spectroscopic Survey of Ices Around Low-Mass Young Stellar Objects: I. H2O and the 5-8 um Bands
A. Boogert, K. Pontoppidan, C. Knez +23
With the goal to study the physical and chemical evolution of ices in solar-mass systems, a spectral survey is conducted of a sample of 41 low luminosity YSOs using 3-38 um Spitzer…
Spitzer Space Telescope Spectroscopy of Ices toward Low Mass Embedded Protostars
A. Boogert, K. Pontoppidan, F. Lahuis +23
Sensitive 5-38 um Spitzer Space Telescope (SST) and ground based 3-5 um spectra of the embedded low mass protostars B5 IRS1 and HH46 IRS show deep ice absorption bands superposed o…