Evidence for a correlation between the Si II 4000 width and Type Ia supernova color

Autor: Nordin, J., Ostman, L., Goobar, A., Balland, C., Lampeitl, H., Nichol, R. C., Sako, M., Schneider, D. P., Smith, M., Sollerman, J., Wheeler, J. C.

We study the pseudo equivalent width of the Si II 4000 feature of Type Ia supernovae in the redshift range 0.0024 < z < 0.634. We find that this spectral indicator correlates with the lightcurve color excess (SALT2 c) as well as previously defined sp

Externí odkaz: http://arxiv.org/abs/1012.4430

First-year Sloan Digital Sky Survey-II (SDSS-II) supernova results: consistency and constraints with other intermediate-redshift datasets

Autor: Lampeitl, H., Nichol, R. C., Seo, H. -J., Giannantonio, T., Shapiro, C., Bassett, B., Percival, W. J., Davis, T. M., Dilday, B., Frieman, J., Garnavich, P., Sako, M., Smith, M., Sollerman, J., Becker, A. C., Cinabro, D., Filippenko, A. V., Foley, R. J., Hogan, C. J., Holtzman, J. A., Jha, S. W., Konishi, K., Marriner, J., Richmond, M. W., Riess, A. G., Schneider, D. P., Stritzinger, M., van der Heyden, K. J., VanderPlas, J. T., Wheeler, J. C., Zheng, C.

Publikováno v: Mon.Not.Roy.Astron.Soc.401:2331-2342,2009

We present an analysis of the luminosity distances of Type Ia Supernovae from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey in conjunction with other intermediate redshift (z<0.4) cosmological measurements including redshift-space distor

Externí odkaz: http://arxiv.org/abs/0910.2193

A Measurement of the Rate of type-Ia Supernovae at Redshift $z\approx$ 0.1 from the First Season of the SDSS-II Supernova Survey

Autor: Dilday, Benjamin, Kessler, R., Frieman, J. A., Holtzman, J., Marriner, J., Miknaitis, G., Nichol, R. C., Romani, R., Sako, M., Bassett, B., Becker, A., Cinabro, D., DeJongh, F., Depoy, D. L., Doi, M., Garnavich, P. M., Hogan, C. J., Jha, S., Konishi, K., Lampeitl, H., Marshall, J. L., McGinnis, D., Prieto, J. L., Riess, A. G., Richmond, M. W., Schneider, D. P., Smith, M., Takanashi, N., Tokita, K., van der Heyden, K., Yasuda, N., Zheng, C., Barentine, J., Brewington, H., Choi, C., Crotts, A., Dembicky, J., Harvanek, M., Im, M., Ketzeback, W., Kleinman, S. J., Krzesiński, J., Long, D. C., Malanushenko, E., Malanushenko, V., McMillan, R. J., Nitta, A., Pan, K., Saurage, G., Snedden, S. A., Watters, S., Wheeler, J. C., York, D.

Publikováno v: Astrophys.J.682:262-282,2008

We present a measurement of the rate of type Ia supernovae (SNe Ia) from the first of three seasons of data from the SDSS-II Supernova Survey. For this measurement, we include 17 SNe Ia at redshift $z\le0.12$. Assuming a flat cosmology with $\Omega_m

Externí odkaz: http://arxiv.org/abs/0801.3297

The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary

Autor: Frieman, Joshua A., Bassett, B., Becker, A., Choi, C., Cinabro, D., DeJongh, F., Depoy, D. L., Dilday, B., Doi, M., Garnavich, P. M., Hogan, C. J., Holtzman, J., Im, M., Jha, S., Kessler, R., Konishi, K., Lampeitl, H., Marriner, J., Marshall, J. L., McGinnis, D., Miknaitis, G., Nichol, R. C., Prieto, J. L., Riess, A. G., Richmond, M. W., Romani, R., Sako, M., Schneider, D. P., Smith, M., Takanashi, N., Tokita, K., van der Heyden, K., Yasuda, N., Zheng, C., Adelman-McCarthy, J., Annis, J., Assef, R. J., Barentine, J., Bender, R., Blandford, R. D., Boroski, W. N., Bremer, M., Brewington, H., Collins, C. A., Crotts, A., Dembicky, J., Eastman, J., Edge, A., Edmondson, E., Elson, E., Eyler, M. E., Filippenko, A. V., Foley, R. J., Frank, S., Goobar, A., Gueth, T., Gunn, J. E., Harvanek, M., Hopp, U., Ihara, Y., Ivezić, Ž., Kahn, S., Kaplan, J., Kent, S., Ketzeback, W., Kleinman, S. J., Kollatschny, W., Kron, R. G., Krzesiński, J., Lamenti, D., Leloudas, G., Lin, H., Long, D. C., Lucey, J., Lupton, R. H., Malanushenko, E., Malanushenko, V., McMillan, R. J., Mendez, J., Morgan, C. W., Morokuma, T., Nitta, A., Ostman, L., Pan, K., Rockosi, C. M., Romer, A. K., Ruiz-Lapuente, P., Saurage, G., Schlesinger, K., Snedden, S. A., Sollerman, J., Stoughton, C., Stritzinger, M., SubbaRao, M., Tucker, D., Vaisanen, P., Watson, L. C., Watters, S., Wheeler, J. C., Yanny, B., York, D.

Publikováno v: Astron.J.135:338-347,2008

The Sloan Digital Sky Survey-II (SDSS-II) has embarked on a multi-year project to identify and measure light curves for intermediate-redshift (0.05 < z < 0.35) Type Ia supernovae (SNe Ia) using repeated five-band (ugriz) imaging over an area of 300 s

Externí odkaz: http://arxiv.org/abs/0708.2749

The Peculiar SN 2005hk: Do Some Type Ia Supernovae Explode as Deflagrations?

Autor: Phillips, M. M., Li, W., Frieman, J. A., Blinnikov, S. I., DePoy, D., Prieto, J. L., Milne, P., Contreras, C., Folatelli, G., Morrell, N., Hamuy, M., Suntzeff, N. B., Roth, M., Gonzalez, S., Krzeminski, W., Filippenko, A. V., Freedman, W. L., Chornock, R., Jha, S., Madore, B. F., Persson, S. E., Burns, C. R., Wyatt, P., Murphy, D., Foley, R. J., Ganeshalingam, M., Serduke, F. J. D., Krisciunas, K., Bassett, B., Becker, A., Dilday, B., Eastman, J., Garnavich, P. M., Holtzman, J., Kessler, R., Lampeitl, H., Marriner, J., Frank, S., Marshall, J. L., Miknaitis, G., Sako, M., Schneider, D. P., van der Heyden, K., Yasuda, Naoki

Publikováno v: Publ.Astron.Soc.Pac.119:360-387,2007

We present extensive u'g'r'i'BVRIYJHKs photometry and optical spectroscopy of SN 2005hk. These data reveal that SN 2005hk was nearly identical in its observed properties to SN 2002cx, which has been called ``the most peculiar known type Ia supernova.

Externí odkaz: http://arxiv.org/abs/astro-ph/0611295