Nathan Smith

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A subset of renal cell carcinomas (RCCs) is characterized by t(6;11)(p21;q12), which results in fusion of the untranslated Alpha (MALAT1) gene to the TFEB gene. Only 21 genetically confirmed cases of t(6;11) RCCs have been reported. This neoplasm typically demonstrates a distinctive biphasic morphology, comprising larger epithelioid cells and smaller cells(More)
Near-infrared emission lines provide unique diagnostics of the geometry, structure, kinematics, and excitation of η Carinae’s circumstellar ejecta, and give clues to the nature of its wind. The infrared spectrum is a strong function of position in η Car’s nebula, with a mix of intrinsic and reflected emission. Molecular hydrogen traces cool gas and dust in(More)
We present extensive early photometric (UBV RrIiJHKs) and spectroscopic (optical and nearinfrared) data on supernova (SN) 2008D as well as X-ray data on the associated X-ray transient (XRT) 080109 which was serendipitously discovered in Swift data during follow-up observations of SN Ib 2007uy in the same galaxy, NGC 2770. Our data span a time range of 2(More)
Two mapping approaches were use to identify and validate milling and baking quality QTL in soft wheat. Two LG were consistently found important for multiple traits and we recommend the use marker-assisted selection on specific markers reported here. Wheat-derived food products require a range of characteristics. Identification and understanding of the(More)
We suggest that the mass lost during the evolution of very massive stars may be dominated by optically thick, continuum-driven outbursts or explosions, instead of by steady line-driven winds. In order for a massive star to become a Wolf-Rayet star, it must shed its hydrogen envelope, but new estimates of the effects of clumping in winds from O-type stars(More)
We report our discovery and early observations of the peculiar Type IIn supernova SN 2006gy in NGC 1260, revealing that it reached a peak magnitude of −22, making it the most luminous supernova ever recorded. It had a very slow rise to maximum that took about 70 days and stayed brighter than −21 mag for about 100 days. It is not yet clear what powers the(More)
We present a detailed analysis of the extremely luminous and long-lasting Type IIn supernova (SN) 2006gy using spectra obtained between days 36 and 237 after explosion. We derive the temporal evolution of the effective temperature, radius, blast-wave and SN-ejecta expansion speeds, and bolometric luminosity, as well as the progenitor wind density and total(More)
Very massive stars shed much of their mass in violent precursor eruptions as luminous blue variables (LBVs) before reaching their most likely end as supernovae, but the cause of LBV eruptions is unknown. The nineteenth-century eruption of eta Carinae, the prototype of these events, ejected about 12 solar masses at speeds of 650 km s(-1), with a kinetic(More)
We use low-dispersion spectra obtained at the Magellan Observatory to study the broad Ha emission from the reverse shock of the infant supernova remnant SNR 1987A. These spectra demonstrate that the spatiokinematic structure of the reverse shock can be distinguished from that of the circumstellar ring and hot spots, even at groundbased spatial resolution.(More)
Observations with the Hubble Space Telescope (HST), conducted since 1990, now offer an unprecedented glimpse into fast astrophysical shocks in the young remnant of supernova 1987A. Comparing observations taken in 2010 with the use of the refurbished instruments on HST with data taken in 2004, just before the Space Telescope Imaging Spectrograph failed, we(More)