THE HUBBLE SPACE TELESCOPE CLUSTER SUPERNOVA SURVEY. III. CORRELATED PROPERTIES OF TYPE Ia SUPERNOVAE AND THEIR HOSTS AT 0.9 < z

DOI：

10.1088/0004-637x/750/1/1

发表时间：

2012-01

期刊：

The Astrophysical Journal

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

J. Meyers;G. Aldering;K. Barbary;L. Barrientos;M. Brodwin;K. Dawson;S. Deustua;M. Doi;P. Eisenhardt;L. Faccioli;H. Fakhouri;A. Fruchter;D. Gilbank;M. Gladders;G. Goldhaber;A. Gonzalez;T. Hattori;E. Hsiao;Y. Ihara;N. Kashikawa;B. Koester;K. Konishi;C. Lidman;L. Lubin;T. Morokuma;T. Oda;S. Perlmutter;M. Postman;P. Ripoche;P. Rosati;D. Rubin;E. Rykoff;A. Spadafora;S. Stanford;N. Suzuki;N. Takanashi;K. Tokita;N. Yasuda;for the Supernova Cosmology Project

利用哈勃空间望远镜（HST）星团超新星巡天发现的Ia型超新星（SNe Ia）样本，并结合大天文台起源深巡天（GOODS）观测到的Ia型超新星（SNe Ia），研究了超新星与其宿主星系在高红移处的相关性。我们使用星系的颜色和定量形态，以确定在25个集群的红色序列，并开发了一个模型来区分被动发展的早期型星系的恒星形成星系的集群和字段。通过这种方法，我们确定了6个SN Ia主机是早期型集群成员和11个SN Ia主机是早期型场星系。我们首次证实在z> 0.9时，早型星系中的Ia超新星比晚型星系中的Ia超新星亮和暗更快。我们还表明，两个样本的主机产生SNe Ia具有相似的颜色分布。被动星系相对简单的光谱能量分布，使我们能够测量早期型SN主机的恒星质量。结合Thomson & Chary对晚型GOODS SN主机的恒星质量估计，我们研究了主机质量与低红移下观测到的哈勃残差的相关性。虽然样本很小，不确定性很大，但在z> 0.9时发现了这种关系的暗示。通过同时拟合星系团的平均形成历史和尘埃含量的红色序列散射，我们表明，早期型星系团SN主机的红化可能是E（B − V）0.06。场和星系团早期型宿主样本的相似性表明，位于红色序列上的场早期型星系也可能受到尘埃的影响最小。因此，这里研究的早型超新星Ia比其他超新星Ia占据了更有利的环境，可以使用表征良好的高红移标准烛光。

Using the sample of Type Ia supernovae (SNe Ia) discovered by the Hubble Space Telescope (HST) Cluster Supernova Survey and augmented with HST-observed SNe Ia in the Great Observatories Origins Deep Survey (GOODS) fields, we search for correlations between the properties of SNe and their host galaxies at high redshift. We use galaxy color and quantitative morphology to determine the red sequence in 25 clusters and develop a model to distinguish passively evolving early-type galaxies from star-forming galaxies in both clusters and the field. With this approach, we identify 6 SN Ia hosts that are early-type cluster members and 11 SN Ia hosts that are early-type field galaxies. We confirm for the first time at z > 0.9 that SNe Ia hosted by early-type galaxies brighten and fade more quickly than SNe Ia hosted by late-type galaxies. We also show that the two samples of hosts produce SNe Ia with similar color distributions. The relatively simple spectral energy distributions expected for passive galaxies enable us to measure stellar masses of early-type SN hosts. In combination with stellar mass estimates of late-type GOODS SN hosts from Thomson & Chary, we investigate the correlation of host mass with Hubble residual observed at lower redshifts. Although the sample is small and the uncertainties are large, a hint of this relation is found at z > 0.9. By simultaneously fitting the average cluster galaxy formation history and dust content to the red-sequence scatters, we show that the reddening of early-type cluster SN hosts is likely E(B − V) ≲ 0.06. The similarity of the field and cluster early-type host samples suggests that field early-type galaxies that lie on the red sequence may also be minimally affected by dust. Hence, the early-type-hosted SNe Ia studied here occupy a more favorable environment to use as well-characterized high-redshift standard candles than other SNe Ia.

THE HUBBLE SPACE TELESCOPE CLUSTER SUPERNOVA SURVEY. III. CORRELATED PROPERTIES OF TYPE Ia SUPERNOVAE AND THEIR HOSTS AT 0.9 < z < 1.46

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