Results 21 to 30 of about 7,025,957 (218)

Nucleosynthesis in type Ia supernovae [PDF]

Nuclear Physics A, 1997
Among the major uncertainties involved in the Chandrasekhar mass models for Type Ia supernovae are the companion star of the accreting white dwarf (or the accretion rate that determines the carbon ignition density) and the flame speed after ignition. We present nucleosynthesis results from relatively slow deflagration (1.5 - 3 % of the sound speed) to ...
Nomoto, K., Iwamoto, K., Nakasato, N., Thielemann, F. -K., Brachwitz, F., Tsujimoto, T., Kubo, Y., Kishimoto, N.   +7 more
openaire   +2 more sources

On the Progenitors of Type Ia Supernovae [PDF]

Symposium - International Astronomical Union, 2002
Supersoft X-ray sources (hereafter SSS) are a class of luminous (bolometric luminosity ~ 1037 − 1038 erg s−1) objects with a characteristic radiation temperature of 30 to 60 eV (Hasinger 1994; Kahabka & Trümper 1996). The most popular model for SSS is that they are massive white dwarfs steadily burning nuclear fuel accreted from a more massive ...
X.-D. Li, E. P. J. van den Heuvel
openaire   +1 more source

Type Ia Supernovae and Cosmology [PDF]

, 2007
Recent progress in modeling type Ia supernovae by means of 3-dimensional hydrodynamic simulations as well as several of the still open questions are addressed in this article. It will be shown that the new models have considerable predictive power which allows us to study observable properties such as light curves and spectra without adjustable non ...
Hillebrandt, W., Röpke, F.
openaire   +2 more sources

SPECTROSCOPY OF TYPE Ia SUPERNOVAE BY THE CARNEGIE SUPERNOVA PROJECT [PDF]

The Astrophysical Journal, 2013
43 pages, 23 figures, and 11 tables. Accepted for publication in ApJ on May 21, 2013.
Folatelli, Gastón, Morrell, Nidia, Phillips, Mark M., Hsiao, Eric, Campillay, Abdo, Contreras, Carlos, Castellón, Sergio, Hamuy Wackenhut, Mario, Krzeminski, Wojtek, Roth, Miguel, Stritzinger, Maximilian, Burns, Christopher R., Freedman, Wendy L., Madore, Barry F., Murphy, David, Persson, S. E., Prieto, José L., Suntzeff, Nicholas B., Krisciunas, Kevin, Anderson, Joseph P., Förster, Francisco, Maza Sancho, José, Pignata Libralato, Giuliano, Rojas, P. Andrea, Boldt, Luis, Salgado, Francisco, Wyatt, Pamela, Olivares E., Felipe, Gal Yam, Avishay, Sako, Masao   +29 more
openaire   +10 more sources

THE AGES OF TYPE Ia SUPERNOVA PROGENITORS [PDF]

The Astronomical Journal, 2010
15 pages, 8 figures, 3 tables, AJ accepted.
Brandt, T.D., Tojeiro, R., Aubourg, E., Heavens, A., Jimenez, R., Strauss, M.A.   +5 more
openaire   +4 more sources

The Distant Type Ia Supernova Rate [PDF]

The Astrophysical Journal, 2002
40 pages and 7 figures. Accepted for publication in the Astrophysical Journal.
Pain, R., Fabbro, S., Sullivan, M., Ellis, R. S., Aldering, G., Astier, P., Duestua, S. E., Fruchter, A. S., Goldhaber, G., Goobar, A., Groom, D. E., Hardin, D., Hook, I. M., Howell, D. A., Irwin, M. J., Kim, A. G., Kim, M. Y., Knop, R. A., Lee, J. C., Lidman, C., Mcmahon, R. G., Nugent, P. E., Panagia, N., Pennypacker, C. R., Perlmutter, S., Ruiz-Lapuente, P., Schahmaneche, K., Schaefer, B., Walton, N. A.   +28 more
openaire   +6 more sources

BURNING THERMALS IN TYPE Ia SUPERNOVAE [PDF]

The Astrophysical Journal, 2011
We develop a one-dimensional theoretical model for thermals burning in Type Ia supernovae based on the entrainment assumption of Morton, Taylor and Turner. Extensions of the standard model are required to account for the burning and for the expansion of the thermal due to changes in the background stratification found in the full star.
Aspden, Andrew, Bell, J., Dong, S., Woosley, S.   +3 more
openaire   +4 more sources

Type Ia Supernovae [PDF]

Symposium - International Astronomical Union, 1992
Spectral calculations show that a model based on the thermonuclear explosion of a degenerate carbon/oxygen white dwarf provides excellent agreement with observations of Type Ia supernovae. Identification of suitable evolutionary progenitors remains a severe problem. General problems with estimation of supernova rates are outlined and the origin of Type
openaire   +1 more source

The Outermost Ejecta of Type Ia Supernovae [PDF]

The Astrophysical Journal, 2008
13 pages, 10 figures, Accepted for publication in The Astrophysical ...
Tanaka, Masaomi, Mazzali, Paolo, Benetti, Stefano, Nomoto, Ken’ichi, Elias-Rosa, Nancy, Kotak, Rubina, Pignata Libralato, Giuliano, Stanishev, Vallery, Hachinger, Stephan   +8 more
openaire   +6 more sources

OPTICAL SPECTROSCOPY OF TYPE Ia SUPERNOVAE [PDF]

The Astronomical Journal, 2008
We present 432 low-dispersion optical spectra of 32 Type Ia supernovae (SNe Ia) that also have well-calibrated light curves. The coverage ranges from 6 epochs to 36 epochs of spectroscopy. Most of the data were obtained with the 1.5m Tillinghast telescope at the F. L.
Matheson, T., Kirshner, Robert, Challis, Peter, Jha, S., Garnavich, P. M., Berlind, Perry, Calkins, Michael, Blondin, S., Balog, Z., Bragg, A. E., Caldwell, Nelson, Concannon, K. Dendy, Falco, E. E., Graves, G. J. M., Huchra, J. P., Kuraszkiewicz, Joanna, Mader, J. A., Mahdavi, A., Phelps, Matthew, Rines, K., Song, I., Wilkes, Belinda   +21 more
openaire   +4 more sources