Sarah Brittain

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24 At some point in their educations, students must learn copious amounts of information. To do this, they use a variety of well-known strategies such as study groups, notetaking services, and videotapes of lectures. In fall 2004, a group of first-year dental students at the University of Michigan (U-M) School of Dentistry asked to have all dental school(More)
In the current paradigm, Oort cloud comets formed in the giant planets' region of the solar nebula, where temperatures and other conditions varied greatly. The measured compositions of four such comets (Halley, Hyakutake, Hale-Bopp, and Lee) are consistent with formation from interstellar ices in the cold nebular region beyond Uranus. The composition of(More)
Planets are formed in disks around young stars. With an age of ∼ 10 Myr, TW Hya is one of the nearest T Tauri stars that is still surrounded by a relatively massive disk. In addition a large number of molecules has been found in the TW Hya disk, making TW Hya the perfect test case in a large survey of disks with Herschel–PACS to directly study their gaseous(More)
We describe a large-scale far-infrared line and continuum survey of protoplanetary disk through to young debris disk systems carried out using the PACS instrument on the Herschel Space Observatory. This Open Time Key Program, known as GASPS (Gas Survey of Protoplanetary Systems), targeted ∼250 young stars in narrow wavelength regions covering the [OI] fine(More)
Context. Circumstellar discs are ubiquitous around young stars, but rapidly dissipate their gas and dust on timescales of a few Myr. The Herschel Space Observatory allows for the study of the warm disc atmosphere, using far-infrared spectroscopy to measure gas content and excitation conditions, and far-IR photometry to constrain the dust distribution. Aims.(More)
Planets are formed in disks around young stars. With an age of ∼10 Myr, TW Hya is one of the nearest T Tauri stars that is still surrounded by a relatively massive disk. In addition a large number of molecules has been found in the TW Hya disk, making TW Hya the perfect test case in a large survey of disks with Herschel–PACS to directly study their gaseous(More)
Context. The gasand dust dissipation processes in disks around young stars remain uncertain despite numerous studies. At the distance of ∼ 99–116 pc, HD141569A is one of the nearest HerbigAe stars that is surrounded by a tenuous disk, probably in transition between a massive primordial disk and a debris disk. Atomic and molecular gases haves been found in(More)
Introduction Current high-resolution imaging systems used in space applications are very large in size and mass. These systems tend to have limited resolution because the mirrors can only be manufactured up to certain sizes due to surface accuracy requirements. Furthermore, the masses of such mirrors tend to grow as the fourth power of their diameters,(More)
Context. The gasand dust dissipation processes in disks around young stars remain uncertain despite numerous studies. At the distance of ∼ 99–116 pc, HD141569A is one of the nearest HerbigAe stars that is surrounded by a tenuous disk, probably in transition between a massive primordial disk and a debris disk. Atomic and molecular gases haves been found in(More)
Context. Circumstellar discs are ubiquitous around young stars, but rapidly dissipate their gas and dust on timescales of a few Myr. The Herschel space observatory allows for the study of the warm disc atmosphere, using far-infrared spectroscopy to measure gas content and excitation conditions, and far-IR photometry to constrain the dust distribution. Aims.(More)