Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Entire DC Network
Eclipses During The 2010 Eruption Of The Recurrent Nova U Scorpii, Bradley E. Schaefer, Ashley Pagnotta, Aaron P. Lacluyze, Daniel E. Reichart, Kevin M. Ivarsen, Joshua B. Haislip, Melissa C. Nysewander, Justin P. Moore, Arto Oksanen, Hannah L. Worters, Ramotholo R. Sefako, Jaco Mentz, Shawn Dvorak, Tomas Gomez, Barbara G. Harris, Arne A. Henden, Thiam Guan Tan, Matthew Templeton, W. H. Allen, Berto Monard, Robert D. Rea, George Roberts, William Stein, Hiroyuki Maehara, Thomas Richards, Chris Stockdale, Tom Krajci, George Sjoberg, Jennie Mccormick, Mikhail Revnivtsev, Sergei Molkov, Valery Suleimanov, Matthew J. Darnley
Eclipses During The 2010 Eruption Of The Recurrent Nova U Scorpii, Bradley E. Schaefer, Ashley Pagnotta, Aaron P. Lacluyze, Daniel E. Reichart, Kevin M. Ivarsen, Joshua B. Haislip, Melissa C. Nysewander, Justin P. Moore, Arto Oksanen, Hannah L. Worters, Ramotholo R. Sefako, Jaco Mentz, Shawn Dvorak, Tomas Gomez, Barbara G. Harris, Arne A. Henden, Thiam Guan Tan, Matthew Templeton, W. H. Allen, Berto Monard, Robert D. Rea, George Roberts, William Stein, Hiroyuki Maehara, Thomas Richards, Chris Stockdale, Tom Krajci, George Sjoberg, Jennie Mccormick, Mikhail Revnivtsev, Sergei Molkov, Valery Suleimanov, Matthew J. Darnley
Faculty Publications
The eruption of the recurrent nova U Scorpii on 2010 January 28 is now the all-time best observed nova event. We report 36,776 magnitudes throughout its 67 day eruption, for an average of one measure every 2.6 minutes. This unique and unprecedented coverage is the first time that a nova has had any substantial amount of fast photometry. With this, two new phenomena have been discovered: the fast flares in the early light curve seen from days 9-15 (which have no proposed explanation) and the optical dips seen out of eclipse from days 41-61 (likely caused by raised rims of …
Light Echoes, Howard E. Bond, Misty C. Bentz, Geoffrey C. Clayton, Armin Rest
Light Echoes, Howard E. Bond, Misty C. Bentz, Geoffrey C. Clayton, Armin Rest
Faculty Publications
The first light echo - scattered light from a stellar outburst arriving at the Earth months or years after the direct light from the event - was detected more than 100 years ago, around Nova Persei 1901. Renewed interest in light echoes has come from the spectacular echo around V838 Monocerotis, and from discoveries of light echoes from historical and prehistorical supernovæ in the Milky Way and Large Magellanic Cloud as well as from the 19 th-century Great Eruption of η Carinae. A related technique is reverberation mapping of active galactic nuclei. This report of a workshop on Light Echoes …
On Orbital Period Changes In Nova Outbursts, Rebecca G. Martin, Mario Livio, Bradley E. Schaefer
On Orbital Period Changes In Nova Outbursts, Rebecca G. Martin, Mario Livio, Bradley E. Schaefer
Faculty Publications
We propose a new mechanism that produces an orbital period change during a nova outburst. When the ejected material carries away the specific angular momentum of the white dwarf, the orbital period increases. A magnetic field on the surface of the secondary star forces a fraction of the ejected material to corotate with the star, and hence the binary system. The ejected material thus takes angular momentum from the binary orbit and the orbital period decreases. We show that for sufficiently strong magnetic fields on the surface of the secondary star, the total change to the orbital period could even …
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 …