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arXiv 0908.3928astro-ph.CO
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利用星系团对z>1超新星的密集HST巡天

An Intensive HST Survey for z>1 Supernovae by Targeting Galaxy Clusters

K. S. Dawson, G. Aldering, R. Amanullah, K. Barbary, L. F. Barrientos, M. Brodwin, N. Connolly, A. Dey, M. Doi, M. Donahue, P. Eisenhardt, E. Ellingson, L. Facc… 展开作者

K. S. Dawson, G. Aldering, R. Amanullah, K. Barbary, L. F. Barrientos, M. Brodwin, N. Connolly, A. Dey, M. Doi, M. Donahue, P. Eisenhardt, E. Ellingson, L. Faccioli, V. Fadeyev, H. K. Fakhouri, A. S. Fruchter, D. G. Gilbank, M. D. Gladders, G. Goldhaber, A. H. Gonzalez, A. Goobar, A. Gude, T. Hattori, H. Hoekstra, X. Huang, Y. Ihara, B. T. Jannuzi, D. Johnston, K. Kashikawa, B. Koester, K. Konishi, M. Kowalski, C. Lidman, E. V. Linder, L. Lubin, J. Meyers, T. Morokuma, F. Munshi, C. Mullis, T. Oda, N. Panagia, S. Perlmutter, M. Postman, T. Pritchard, J. Rhodes, P. Rosati, D. Rubin, D. J. Schlegel, A. Spadafora, S. A. Stanford, V. Stanishev, D. Stern, M. Strovink, N. Suzuki, N. Takanashi, K. Tokita, M. Wagner, L. Wang, N. Yasuda, H. K. C. Yee

摘要:

提出了一种利用哈勃空间望远镜(HST)发现和研究高红移Ia型超新星(SNe Ia)的新的巡天策略。通过以0.9<z<1.5的大质量星系团为目标,与HST实地调查相比,我们在寻找SNe的效率方面获得了两倍的提高,并且在相对无尘的红色序列星系中SN探测的总产量方面获得了三倍的提高。总共发现了16个z>0.95的SNe,其中9个在星系团中。这种策略提供了一个SN样本,可用于去耦的主机星系消光和内在的颜色在高红移SNe的影响,从而减少SN宇宙学中最大的系统不确定性之一。

英文摘要:

We present a new survey strategy to discover and study high redshift Type Ia supernovae (SNe Ia) using the Hubble Space Telescope (HST). By targeting massive galaxy clusters at 0.9<z<1.5, we obtain a twofold improvement in the efficiency of finding SNe compared to an HST field survey and a factor of three improvement in the total yield of SN detections in relatively dust-free red-sequence galaxies. In total, sixteen SNe were discovered at z>0.95, nine of which were in galaxy clusters. This strategy provides a SN sample that can be used to decouple the effects of host galaxy extinction and intrinsic color in high redshift SNe, thereby reducing one of the largest systematic uncertainties in SN cosmology.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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