Results 111 to 120 of about 6,421 (225)

Spectra of high-redshift type Ia supernovae and a comparison with their low-redshift counterparts [PDF]

, 2005
We present spectra for 14 high-redshift (0.17 < z < 0.83) supernovae, which were discovered by the Supernova Cosmology Project as part of a campaign to measure cosmological parameters.
Conley, A, Groom, DE, Amanullah, R., Garavini, G, Ellis, R, Fabbro, S., Aldering, G, Aldering, G., Nugent, P. E., Hook, Isobel, Spadafora, AL, Conley, A., Amanullah, R, Groom, D. E., Schaefer, B. E., Ruiz-Lapuente, P., Pennypacker, C. R., Pennypacker, CR, Nobili, S, Sainton, G, Nugent, PE, Goobar, A, Thomas, RC, Sainton, G., Walton, NA, Schaefer, BE, Stanishev, V, Walton, N. A., Howell, DA, Nobili, S., Wood-Vasey, WM, Thomas, R. C., Smith, E, Goldhaber, G, Knop, RA, Perlmutter, S, Garavini, G., Burns, MS, Kowalski, M., Goldhaber, G., Wang, L., Wood-Vasey, W. M., Stanishev, V., Hook, IM, Wang, L, Lidman, C., Fabbro, S, Ellis, R., Fadeyev, V, Pain, R, Gibbons, R, Hook, I. M., Smith, E., Perlmutter, S., Spadafora, A. L., Deustua, S. E., Gibbons, R., Folatelli, G, Kowalski, M, Deustua, SE, Project, SC, Pain, R., Burns, M. S., Fadeyev, V., Lidman, C, Kim, A. G., Kim, AG, Howell, D. A., Goobar, A., Knop, R. A., Ruiz-Lapuente, P, Folatelli, G.   +71 more
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Connections Between the Spectroscopy and Photometry of Type Ia Supernovae [PDF]

Type Ia supernovae (SNe Ia) play a vital role in the study of many topics of astrophysics. They act as cosmological probes through their well-established nature as precise standardizable candles.
Burrow, Anthony
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Spectroscopy of twelve Type Ia supernovae at intermediate redshift

, 2005
We present spectra of twelve Type Ia supernovae obtained in 1999 at the William Herschel Telescope and the Nordic Optical Telescope during a search for Type Ia supernovae (SN Ia) at intermediate redshift.
Mendez, J.M., M. Mcmahon, R., P. Ruiz-Lapuente, N. A. Walton, Astier, P., Amanullah, R., Schahmaneche, K., Stanishev, V., J. Irwin, M., Hardin, D., Fabbro, S., Hook, I.M., S. Ellis, R., R. Pain, P. Astier, I. M. Hook, M. J. Irwin, V. Stanishev, Walton, N.A., Mcmahon, R.M., K. Schahmaneche, Mouchet, M., A. Goobar, Ruiz-Lapuente, P., R. G. McMahon, M. Mendez, J., Pain, R., M. Hook, I., G. Sainton, D. Hardin, Irwin, M.J., C. Balland, R. S. Ellis, Sainton, G., S. Fabbro, Balland, C., M. Mouchet, J. M. Mendez, Goobar, A., R. Amanullah, Ellis, R.S.   +40 more
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The direct analysis of spectra of type Ia supernovae.

, 2000
By using SYNOW, we show that most of the spectroscopic differences among type Ia supernovae can be explained by the temperature; therefore, the composition of most of the type Ia supernovae is essentially the same.
Hatano, Kazuhito.
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Long-term light variations of type-Ia supernovae candidates

, 2021
Tip-Ia süpernovaları, bileşeninden madde alan Kabron-Oksijen beyaz cücesini barındıran bir çift yıldız sisteminde beyaz cücenin patlaması ile oluşan yüksek enerjili termonükleer patlamalar olarak kabul görmektedir.
Burgaz, Umut
core  

A Common Origin of Normal Type Ia Supernovae Suggested by the Photometric Diversity

The Astrophysical Journal
In recent years, with the increasing number of type Ia supernovae (SNe Ia) discovered soon after their explosions, a nonnegligible fraction of SNe Ia with early-excess emissions (EExSNe Ia) have been confirmed.
Weiyu Wu, Ji-an Jiang, Dezheng Meng, Zelin Xu, Keiichi Maeda, Mamoru Doi, Ken’ichi Nomoto, Naoki Yasuda, Masaomi Tanaka, Toshikazu Shigeyama, Nozomu Tominaga, Željko Ivezić, Peter Yoachim, Saurabh W. Jha, Tinggui Wang, Hisanori Furusawa, Nao Suzuki, Andrew J. Connolly, Satoshi Miyazaki   +18 more
doaj   +1 more source

The Hourglass Simulation: A Catalog for the Roman High-latitude Time-domain Core Community Survey

The Astrophysical Journal
We present a simulation of the time-domain catalog for the Nancy Grace Roman Space Telescope’s High-Latitude Time-Domain Core Community Survey. This simulation, called the Hourglass simulation, uses the most up-to-date spectral energy distribution models
B. M. Rose, M. Vincenzi, R. Hounsell, H. Qu, L. Aldoroty, D. Scolnic, R. Kessler, P. Macias, D. Brout, M. Acevedo, R. C. Chen, S. Gomez, E. Peterson, D. Rubin, M. Sako, the Roman Supernova Project Infrastructure Team   +15 more
doaj   +1 more source

Type Ia Supernovae from First-generation Stars

The Astrophysical Journal
Type Ia supernovae (SNe Ia) discovered at redshift z ≲ 2.5 are presumed to be produced from Population I/II stars. In this work, we investigate the production of SNe Ia from Population III binaries in the cosmological framework.
Zhenwei Li, Lifan Wang, Zhanwen Han, Xuefei Chen   +3 more
doaj   +1 more source

Various Topics in Type Ia Supernovae [PDF]

, 2019
This work takes two approaches to increasing our understanding of type Ia supernovae. The first part uses observations to study their spectral evolution and diversity. The second part uses modeling to investigate a potential progenitor.
Jenks, Malia
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Multi-dimensional models of Type Ia supernovae

, 2015
Type Ia supernovae (SNe Ia) exhibit a significant diversity in their observables suggesting that a variety of progenitor channels and/or explosion mechanisms contribute to this class of objects. Understanding the origin of the diversity is essential for
Ropke, Friedrich, Hillebrandt, Wolfgang, Sim, Stuart A, Pakmor, R, Fink, M, Seitenzahl, I. R., Kromer, M   +6 more
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