OPTICAL IDENTIFICATION OF CEPHEIDS IN 19 HOST GALAXIES OF TYPE Ia SUPERNOVAE AND NGC 4258 WITH THE HUBBLE SPACE TELESCOPE

被引：41

作者：

Hoffmann, Samantha L. ^{[1
]}

Macri, Lucas M. ^{[1
]}

Riess, Adam G. ^{[2
,3
]}

Yuan, Wenlong ^{[1
]}

Casertano, Stefano ^{[3
]}

Foley, Ryan J. ^{[4
,5
,6
,9
]}

Filippenko, Alexei V. ^{[7
]}

Tucker, Brad E. ^{[7
,8
]}

Chornock, Ryan

Silverman, Jeffrey M. ^{[10
]}

Welch, Douglas L. ^{[11
]}

Goobar, Ariel ^{[12
]}

Amanullah, Rahman ^{[12
]}

机构：

[1] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, Dept Phys & Astron, College Stn, TX 77843 USA

[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[3] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[4] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[5] Univ Illinois, Dept Astron, 1002 W Green St, Urbana, IL 61801 USA

[6] Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA

[7] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[8] Australian Natl Univ, Mt Stromlo Observ, Res Sch Astron & Astrophys, Weston, ACT, Australia

[9] Ohio Univ, Dept Phys & Astron, Astrophys Inst, Athens, OH 45701 USA

[10] Univ Texas Austin, Dept Astron, RLM 15308, Austin, TX 78712 USA

[11] McMaster Univ, Dept Phys & Astron, Hamilton, ON, Canada

[12] Stockholm Univ, Phys Dept, Oskar Klein Ctr, SE-10691 Stockholm, Sweden

来源：

ASTROPHYSICAL JOURNAL | 2016年 / 830卷 / 01期

基金：

美国国家科学基金会;

关键词：

distance scale; galaxies: distances and redshifts; cosmology: observations; stars: variables: Cepheids; LARGE-MAGELLANIC-CLOUD; PERIOD-LUMINOSITY RELATION; FIELD CAMERA 3; EXTRAGALACTIC DISTANCE SCALE; METALLICITY DEPENDENCE; KEY PROJECT; GEOMETRIC DISTANCE; CLASSICAL CEPHEIDS; GALACTIC CEPHEIDS; SPIRAL GALAXIES;

D O I：

10.3847/0004-637X/830/1/10

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results of an optical search conducted as part of the SH0ES project (Supernovae and H-0 for the Equation of State of dark energy) for Cepheid variable stars using the Hubble Space Telescope (HST) in 19 hosts of Type Ia supernovae (SNe Ia) and the maser-host galaxy NGC 4258. The targets include nine newly imaged SN. Ia hosts using a novel strategy based on a long-pass filter that minimizes the number of HST orbits required to detect and accurately determine Cepheid properties. We carried out a homogeneous reduction and analysis of all observations, including new universal variability searches in all SN. Ia hosts, which yielded a total of 2200 variables with well-defined selection criteria, the largest such sample identified outside the Local Group. These objects are used in a companion paper to determine the local value of H-0 with a total uncertainty of 2.4%.

引用

页数：15

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