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OPTICAL IDENTIFICAT...
OPTICAL IDENTIFICATION OF CEPHEIDS IN 19 HOST GALAXIES OF TYPE Ia SUPERNOVAE AND NGC 4258 WITH THE HUBBLE SPACE TELESCOPE
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Hoffmann, Samantha L. (author)
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Macri, Lucas M. (author)
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Riess, Adam G. (author)
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Yuan, Wenlong (author)
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Casertano, Stefano (author)
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Foley, Ryan J. (author)
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Filippenko, Alexei V. (author)
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Tucker, Brad E. (author)
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Chornock, Ryan (author)
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Silverman, Jeffrey M. (author)
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Welch, Douglas L. (author)
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- Goobar, Ariel (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Amanullah, Rahman (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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(creator_code:org_t)
- 2016
- 2016
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 830:1
- Related links:
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https://arxiv.org/ab...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- 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%.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- distance scale
- galaxies: distances and redshifts
- cosmology: observations
- stars: variables: Cepheids
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hoffmann, Samant ...
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Macri, Lucas M.
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Riess, Adam G.
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Yuan, Wenlong
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Casertano, Stefa ...
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Foley, Ryan J.
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show more...
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Filippenko, Alex ...
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Tucker, Brad E.
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Chornock, Ryan
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Silverman, Jeffr ...
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Welch, Douglas L ...
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Goobar, Ariel
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Amanullah, Rahma ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Stockholm University