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The Effects Of Dust On The Optical And Infrared Evolution Of Sn 2004et, J. Fabbri, M. Otsuka, M. J. Barlow, Joseph S. Gallagher, R. Wesson, B. E.K. Sugerman, Geoffrey C. Clayton, M. Meixner, J. E. Andrews, D. L. Welch, B. Ercolano
The Effects Of Dust On The Optical And Infrared Evolution Of Sn 2004et, J. Fabbri, M. Otsuka, M. J. Barlow, Joseph S. Gallagher, R. Wesson, B. E.K. Sugerman, Geoffrey C. Clayton, M. Meixner, J. E. Andrews, D. L. Welch, B. Ercolano
Faculty Publications
We present an analysis of multi-epoch observations of the Type II-P supernova SN 2004et. New and archival optical spectra of SN 2004et are used to study the evolution of the Hα and [Oi] 6300-Å line profiles between days 259 and 646. Mid-infrared imaging with Michelle on Gemini-North and with all three instruments of the Spitzer Space Telescope was carried out between 2004 and 2010, supplemented by archival Spitzer data. We include Spitzer'warm' mission photometry at 3.6 and 4.5μm obtained on days 1779, 1931 and 2151, along with ground-based and Hubble Space Telescope (HST) optical and near-infrared observations obtained between days …
Spectroscopic Hα And Hγ Survey Of Field Be Stars: 2004-2009, Erika D. Grundstrom, Douglas R. Gies, Christina Aragona, Tabetha S. Boyajian, E. Victor Garcia, Amber N. Marsh, M. Virginia Mcswain, Rachael M. Roettenbacher, Stephen J. Williams, David W. Wingert
Spectroscopic Hα And Hγ Survey Of Field Be Stars: 2004-2009, Erika D. Grundstrom, Douglas R. Gies, Christina Aragona, Tabetha S. Boyajian, E. Victor Garcia, Amber N. Marsh, M. Virginia Mcswain, Rachael M. Roettenbacher, Stephen J. Williams, David W. Wingert
Faculty Publications
Massive O- and B-type stars are "cosmic engines" in the Universe and can be the dominant source of luminosity in a galaxy. The class of Be stars are rapidly rotating B-type stars that lose mass in an equatorial, circumstellar disk (Porter & Rivinius 2003) and cause Balmer and other line emission. Currently, we are unsure as to why these stars rotate so quickly but three scenarios are possible: they may have been born as rapid rotators, spun up by binary mass transfer, or spun up during the main-sequence evolution of B stars. In order to investigate these scenarios for this …
The 2011 Outburst Of The Recurrent Nova T Pyxidis. Evidence For A Face-On Bipolar Ejection, O. Chesneau, A. Meilland, D. P.K. Banerjee, J. B. Le Bouquin, H. Mcalister, F. Millour, S. T. Ridgway, A. Spang, T. Ten Brummelaar, M. Wittkowski, N. M. Ashok, M. Benisty, J. P. Berger, T. Boyajian, Ch Farrington, P. J. Goldfinger, A. Merand, N. Nardetto, R. Petrov, Th Rivinius, G. Schaefer, Y. Touhami, G. Zins
The 2011 Outburst Of The Recurrent Nova T Pyxidis. Evidence For A Face-On Bipolar Ejection, O. Chesneau, A. Meilland, D. P.K. Banerjee, J. B. Le Bouquin, H. Mcalister, F. Millour, S. T. Ridgway, A. Spang, T. Ten Brummelaar, M. Wittkowski, N. M. Ashok, M. Benisty, J. P. Berger, T. Boyajian, Ch Farrington, P. J. Goldfinger, A. Merand, N. Nardetto, R. Petrov, Th Rivinius, G. Schaefer, Y. Touhami, G. Zins
Faculty Publications
Aims.T Pyx is the first recurrent nova ever historically studied. It was seen in outburst six times between 1890 and 1966 and then not for 45 years. We report on near-IR interferometric observations of the recent outburst of 2011. Methods.We obtained near-IR observations of T Pyx at dates ranging from t = 2.37 d to t = 48.2 d after the outburst, with the CLASSIC recombiner located at the CHARA array and with the PIONIER and AMBER recombiners located at the VLTI array. These data are supplemented with near-IR photometry and spectra obtained at Mount Abu, India. We compare expansion …