PARALLAX of GALACTIC CEPHEIDS from SPATIALLY SCANNING the WIDE FIELD CAMERA 3 on the HUBBLE SPACE TELESCOPE: The CASE of SS CANIS MAJORIS

Stefano Casertano; Adam G. Riess; Jay Anderson; Richard I. Anderson; J. Bradley Bowers; Kelsey I. Clubb; Aviv R. Cukierman; Alexei V. Filippenko; Melissa L. Graham; John W. MacKenty; Carl Melis; Brad E. Tucker; Gautam Upadhya

doi:10.3847/0004-637X/825/1/11

PARALLAX of GALACTIC CEPHEIDS from SPATIALLY SCANNING the WIDE FIELD CAMERA 3 on the HUBBLE SPACE TELESCOPE: The CASE of SS CANIS MAJORIS

Stefano Casertano, Adam G. Riess, Jay Anderson, Richard I. Anderson, J. Bradley Bowers, Kelsey I. Clubb, Aviv R. Cukierman, Alexei V. Filippenko, Melissa L. Graham, John W. MacKenty, Carl Melis, Brad E. Tucker, Gautam Upadhya

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Abstract

We present a high-precision measurement of the parallax for the 12-day Cepheid SS Canis Majoris, obtained via spatial scanning with the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST). Spatial scanning enables astrometric measurements with a precision of 20-40 μas, an order of magnitude better than pointed observations. SS CMa is the second Cepheid targeted for parallax measurement with HST and is the first of a sample of 18 long-period (10 days) Cepheids selected in order to improve the calibration of their period-luminosity relation and eventually permit a determination of the Hubble constant H ₀ to better than 2%. The parallax of SS CMa is found to be 348 ± 38 μas, corresponding to a distance of 2.9 ± 0.3 kpc. We also present a refinement of the static geometric distortion of WFC3 obtained using spatial scanning observations of calibration fields, with a typical magnitude ≲0.01 pixels on scales of 100 pixels.

Original language	English
Article number	11
Journal	Astrophysical Journal
Volume	825
Issue number	1
DOIs	https://doi.org/10.3847/0004-637X/825/1/11
Publication status	Published - 1 Jul 2016

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Casertano, S., Riess, A. G., Anderson, J., Anderson, R. I., Bowers, J. B., Clubb, K. I., Cukierman, A. R., Filippenko, A. V., Graham, M. L., MacKenty, J. W., Melis, C., Tucker, B. E., & Upadhya, G. (2016). PARALLAX of GALACTIC CEPHEIDS from SPATIALLY SCANNING the WIDE FIELD CAMERA 3 on the HUBBLE SPACE TELESCOPE: The CASE of SS CANIS MAJORIS. Astrophysical Journal, 825(1), Article 11. https://doi.org/10.3847/0004-637X/825/1/11

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title = "PARALLAX of GALACTIC CEPHEIDS from SPATIALLY SCANNING the WIDE FIELD CAMERA 3 on the HUBBLE SPACE TELESCOPE: The CASE of SS CANIS MAJORIS",

abstract = "We present a high-precision measurement of the parallax for the 12-day Cepheid SS Canis Majoris, obtained via spatial scanning with the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST). Spatial scanning enables astrometric measurements with a precision of 20-40 μas, an order of magnitude better than pointed observations. SS CMa is the second Cepheid targeted for parallax measurement with HST and is the first of a sample of 18 long-period (10 days) Cepheids selected in order to improve the calibration of their period-luminosity relation and eventually permit a determination of the Hubble constant H 0 to better than 2%. The parallax of SS CMa is found to be 348 ± 38 μas, corresponding to a distance of 2.9 ± 0.3 kpc. We also present a refinement of the static geometric distortion of WFC3 obtained using spatial scanning observations of calibration fields, with a typical magnitude ≲0.01 pixels on scales of 100 pixels.",

keywords = "cosmology: observations, distance scale, parallaxes, stars: individual (SS CMa), stars: variables: Cepheids, supernovae: general",

author = "Stefano Casertano and Riess, {Adam G.} and Jay Anderson and Anderson, {Richard I.} and Bowers, {J. Bradley} and Clubb, {Kelsey I.} and Cukierman, {Aviv R.} and Filippenko, {Alexei V.} and Graham, {Melissa L.} and MacKenty, {John W.} and Carl Melis and Tucker, {Brad E.} and Gautam Upadhya",

year = "2016",

month = jul,

day = "1",

doi = "10.3847/0004-637X/825/1/11",

language = "English",

volume = "825",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

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Casertano, S, Riess, AG, Anderson, J, Anderson, RI, Bowers, JB, Clubb, KI, Cukierman, AR, Filippenko, AV, Graham, ML, MacKenty, JW, Melis, C, Tucker, BE & Upadhya, G 2016, 'PARALLAX of GALACTIC CEPHEIDS from SPATIALLY SCANNING the WIDE FIELD CAMERA 3 on the HUBBLE SPACE TELESCOPE: The CASE of SS CANIS MAJORIS', Astrophysical Journal, vol. 825, no. 1, 11. https://doi.org/10.3847/0004-637X/825/1/11

TY - JOUR

T1 - PARALLAX of GALACTIC CEPHEIDS from SPATIALLY SCANNING the WIDE FIELD CAMERA 3 on the HUBBLE SPACE TELESCOPE

T2 - The CASE of SS CANIS MAJORIS

AU - Casertano, Stefano

AU - Riess, Adam G.

AU - Anderson, Jay

AU - Anderson, Richard I.

AU - Bowers, J. Bradley

AU - Clubb, Kelsey I.

AU - Cukierman, Aviv R.

AU - Filippenko, Alexei V.

AU - Graham, Melissa L.

AU - MacKenty, John W.

AU - Melis, Carl

AU - Tucker, Brad E.

AU - Upadhya, Gautam

PY - 2016/7/1

Y1 - 2016/7/1

N2 - We present a high-precision measurement of the parallax for the 12-day Cepheid SS Canis Majoris, obtained via spatial scanning with the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST). Spatial scanning enables astrometric measurements with a precision of 20-40 μas, an order of magnitude better than pointed observations. SS CMa is the second Cepheid targeted for parallax measurement with HST and is the first of a sample of 18 long-period (10 days) Cepheids selected in order to improve the calibration of their period-luminosity relation and eventually permit a determination of the Hubble constant H 0 to better than 2%. The parallax of SS CMa is found to be 348 ± 38 μas, corresponding to a distance of 2.9 ± 0.3 kpc. We also present a refinement of the static geometric distortion of WFC3 obtained using spatial scanning observations of calibration fields, with a typical magnitude ≲0.01 pixels on scales of 100 pixels.

AB - We present a high-precision measurement of the parallax for the 12-day Cepheid SS Canis Majoris, obtained via spatial scanning with the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST). Spatial scanning enables astrometric measurements with a precision of 20-40 μas, an order of magnitude better than pointed observations. SS CMa is the second Cepheid targeted for parallax measurement with HST and is the first of a sample of 18 long-period (10 days) Cepheids selected in order to improve the calibration of their period-luminosity relation and eventually permit a determination of the Hubble constant H 0 to better than 2%. The parallax of SS CMa is found to be 348 ± 38 μas, corresponding to a distance of 2.9 ± 0.3 kpc. We also present a refinement of the static geometric distortion of WFC3 obtained using spatial scanning observations of calibration fields, with a typical magnitude ≲0.01 pixels on scales of 100 pixels.

KW - cosmology: observations

KW - distance scale

KW - parallaxes

KW - stars: individual (SS CMa)

KW - stars: variables: Cepheids

KW - supernovae: general

UR - http://www.scopus.com/inward/record.url?scp=84978191677&partnerID=8YFLogxK

U2 - 10.3847/0004-637X/825/1/11

DO - 10.3847/0004-637X/825/1/11

M3 - Article

SN - 0004-637X

VL - 825

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 11

ER -

PARALLAX of GALACTIC CEPHEIDS from SPATIALLY SCANNING the WIDE FIELD CAMERA 3 on the HUBBLE SPACE TELESCOPE: The CASE of SS CANIS MAJORIS

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