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Reconciliation of the Surface Brightness Fluctuation and Type 1a Supernova Distance Scales

Ajhar, Edward A; Tonry, John; Blakeslee, John P; Riess, Adam

Description

We present Hubble Space Telescope measurements of surface brightness fluctuation (SBF) distances to early-type galaxies that have hosted Type Ia supernovae (SNe Ia). The agreement in the relative SBF and SN Ia multicolor light-curve shape and delta-m15 distances is excellent. There is no systematic scale error with distance, and previous work has shown that SBFs and SNe Ia give consistent ties to the Hubble flow. However, we confirm a systematic offset of ∼ 0.25 mag in the distance zero points...[Show more]

dc.contributor.authorAjhar, Edward A
dc.contributor.authorTonry, John
dc.contributor.authorBlakeslee, John P
dc.contributor.authorRiess, Adam
dc.date.accessioned2015-12-13T23:16:19Z
dc.date.available2015-12-13T23:16:19Z
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1885/89348
dc.description.abstractWe present Hubble Space Telescope measurements of surface brightness fluctuation (SBF) distances to early-type galaxies that have hosted Type Ia supernovae (SNe Ia). The agreement in the relative SBF and SN Ia multicolor light-curve shape and delta-m15 distances is excellent. There is no systematic scale error with distance, and previous work has shown that SBFs and SNe Ia give consistent ties to the Hubble flow. However, we confirm a systematic offset of ∼ 0.25 mag in the distance zero points of the two methods, and we trace this offset to their respective Cepheid calibrations. SBFs have in the past been calibrated with Cepheid distances from the H0 Key Project team, while SNe Ia have been calibrated with Cepheid distances from the team composed of Sandage, Saha, and collaborators. When the two methods are calibrated in a consistent way, their distances are in superb agreement. Until the conflict over the "long" and "short" extragalactic Cepheid distances among many galaxies is resolved, we cannot definitively constrain the Hubble constant to better than ∼ 10%, even leaving aside the additional uncertainty in the distance to the Large Magellanic Cloud, common to both Cepheid scales. However, recent theoretical SBF predictions from stellar population models favor the Key Project Cepheid scale, while the theoretical SN Ia calibration lies between the long and short scales. In addition, while the current SBF distance to M31/M32 is in good agreement with the RR Lyrae and red giant branch distances, calibrating SBFs with the longer Cepheid scale would introduce a 0.3 mag offset with respect to the RR Lyrae scale.
dc.publisherIOP Publishing
dc.sourceAstrophysical Journal, The
dc.subjectKeywords: Cosmological parameters; Distance scale; Galaxies: distances and redshifts; Supernovae: general
dc.titleReconciliation of the Surface Brightness Fluctuation and Type 1a Supernova Distance Scales
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume559
dc.date.issued2001
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationMigratedxPub19337
local.type.statusPublished Version
local.contributor.affiliationAjhar, Edward A, National Optical Astronomy Observatory
local.contributor.affiliationTonry, John, University of Hawaii
local.contributor.affiliationBlakeslee, John P, California Institute of Technology
local.contributor.affiliationRiess, Adam, Space Telescope Science Institute
local.contributor.affiliationSchmidt, Brian, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.startpage584
local.bibliographicCitation.lastpage591
local.identifier.doi10.1086/322342
dc.date.updated2015-12-12T08:47:38Z
local.identifier.scopusID2-s2.0-0035485988
CollectionsANU Research Publications

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