The distant Type Ia supernova rate by Pain, R, Fabbro, S, Sullivan, M, Ellis, R, Aldering, G, Astier, P, Duestua, SE, Fruchter, A, Goldhaber, G, Goobar, A, Groom, D, Hardin, D, Hook, I, Howell, D, Irwin, M, Kim, A, Kim, M, Knop, R, Lee, J, Lidman, C, McMahon, R, Nugent, P, Panagia, N, Pennypacker, C, Perlmutter, S

“…We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12 square degrees, thirty-eight supernovae were detected at redshifts 0.25--0.85. …”

The distant type Ia supernova rate by Pain, R, Fabbro, S, Sullivan, M, Ellis, R, Aldering, G, Astier, P, Deustua, SE, Fruchter, A, Goldhaber, G, Goobar, A, Groom, D, Hardin, D, Hook, I, Howell, D, Irwin, M, Kim, A, Kim, M, Knop, R, Lee, J, Lidman, C, McMahon, R, Nugent, P, Panagia, N, Pennypacker, C, Perlmutter, S

“…We present a measurement of the rate of distant Type la supernovae derived using four large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12 deg2, 38 supernovae were detected at redshifts 0.25-0.85. …”

Quantitative comparison between type Ia supernova spectra at low and high redshifts: a case study by Garavini, G, Folatelli, G, Nobili, S, Aldering, G, Amanullah, R, Antilogus, P, Astier, P, Blanc, G, Bronder, T, Burns, MS, Conley, A, Deustua, SE, Doi, M, Fabbro, S, Fadeyev, V, Gibbons, R, Goldhaber, G, Goobar, A, Groom, D, Hook, I, Howell, D, Kashikawa, N, Kim, A, Kowalski, M, Kuznetsova, N

“…In this case study, we apply the method to 12 high-redshift (0.212 ≤ z ≤ 0.912) SNe la observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca II HandK, we show that the spectra of the high-redshift SNe Ia are quantitatively similar to spectra of nearby SNe la (z < 0.15). …”

CONSTRAINING DUST AND COLOR VARIATIONS OF HIGH-z SNe USING NICMOS ON THE HUBBLE SPACE TELESCOPE by Nobili, S, Fadeyev, V, Aldering, G, Amanullah, R, Barbary, K, Burns, MS, Dawson, K, Deustua, SE, Faccioli, L, Fruchter, A, Goldhaber, G, Goobar, A, Hook, I, Howell, D, Kim, A, Knop, R, Lidman, C, Meyers, J, Nugent, P, Pain, R, Panagia, N, Perlmutter, S, Rubin, D, Spadafora, A, Strovink, M

“…We present data from the Supernova Cosmology Project for five high redshift Type Ia supernovae (SNe Ia) that were obtained using the NICMOS infrared camera on the Hubble Space Telescope. …”

Spectra of high-redshift type Ia supernovae and a comparison with their low-redshift counterparts by Hook, I, Howell, D, Aldering, G, Amanullah, R, Burns, MS, Conley, A, Deustua, SE, Ellis, R, Fabbro, S, Fadeyev, V, Folatelli, G, Garavini, G, Gibbons, R, Goldhaber, G, Goobar, A, Groom, D, Kim, A, Knop, R, Kowalski, M, Lidman, C, Nobili, S, Nugent, P, Pain, R, Pennypacker, C, Perlmutter, S

“…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. …”

New constraints on Omega(M), Omega(Lambda), and w from an independent set of 11 high-redshift supernovae observed with the Hubble Space Telescope by Knop, R, Aldering, G, Amanullah, R, Astier, P, Blanc, G, Burns, MS, Conley, A, Deustua, SE, Doi, M, Ellis, R, Fabbro, S, Folatelli, G, Fruchter, A, Garavini, G, Garmond, S, Garton, K, Gibbons, R, Goldhaber, G, Goobar, A, Groom, D, Hardin, D, Hook, I, Howell, D, Kim, A, Lee, B

“…Combined with earlier Supernova Cosmology Project data, the new SNe yield a measurement of the mass density ΩM = 0.25 -0.06+0.07 (statistical) ± 0.04 (identified systematics), or equivalently, a cosmological constant of ± = 0.75 -0.07+0.06 (statistical) ± 0.04 (identified systematics), under the assumptions of a flat universe and that the dark energy equation-of-state parameter has a constant value w = -1. …”

The Hubble diagram of type Ia supernovae as a function of host galaxy morphology by Sullivan, M, Ellis, R, Aldering, G, Amanullah, R, Astier, P, Blanc, G, Burns, MS, Conley, A, Deustua, SE, Doi, M, Fabbro, S, Folatelli, G, Fruchter, A, Garavini, G, Gibbons, R, Goldhaber, G, Goobar, A, Groom, D, Hardin, D, Hook, I, Howell, D, Irwin, M, Kim, A, Knop, R, Lidman, C

“…Selecting from the sample discovered by the Supernova Cosmology Project (SCP), we classify the host galaxies of 39 distant SNe using the combination of STIS imaging, Keck spectroscopy and ground-based broad-band photometry. …”