Improved Distance Determination To M51 From Supernovae 2011dh And 2005cs

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dc.contributor.utaustinauthorWheeler, J. C.en_US
dc.creatorVinko, J.en_US
dc.creatorTakats, K.en_US
dc.creatorSzalai, T.en_US
dc.creatorMarion, G. H.en_US
dc.creatorWheeler, J. C.en_US
dc.creatorSarneczky, K.en_US
dc.creatorGarnavich, P. M.en_US
dc.creatorKelemen, J.en_US
dc.creatorKlagyivik, P.en_US
dc.creatorPal, A.en_US
dc.creatorSzalai, N.en_US
dc.creatorVida, K.en_US
dc.date.accessioned2016-04-22T19:43:48Z
dc.date.available2016-04-22T19:43:48Z
dc.date.issued2012-04en
dc.description.abstractAims. The appearance of two recent supernovae, SN 2011dh and 2005cs, both in M51, provides an opportunity to derive an improved distance to their host galaxy by combining the observations of both SNe. Methods. We apply the Expanding Photosphere Method to get the distance to M51 by fitting the data of these two SNe simultaneously. In order to correct for the effect of flux dilution, we use correction factors (zeta) appropriate for standard type II-P SNe atmospheres for 2005cs, but find zeta similar to 1 for the type IIb SN 2011dh, which may be due to the reduced H-content of its ejecta. Results. The EPM analysis resulted in D-M51 = 8.4 +/- 0.7 Mpc. Based on this improved distance, we also re-analyze the HST observations of the proposed progenitor of SN 2011dh. We confirm that the object detected on the pre-explosion HST-images is unlikely to be a compact stellar cluster. In addition, its derived radius (similar to 277 R-circle dot) is too large for being the real (exploded) progenitor of SN 2011dh. Conclusions. The supernova-based distance, D = 8.4 Mpc, is in good agreement with other recent distance estimates to M51.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipHungarian OTKA K76816, K-081421en_US
dc.description.sponsorshipEuropean Union TAMOP 4.2.2/B-10/1-2010-0012en_US
dc.description.sponsorshipNSF AST 09-07903, AST 11-09801en_US
dc.description.sponsorshipESA PECS 98073en_US
dc.description.sponsorshipHungarian Academy of Sciencesen_US
dc.identifierdoi:10.15781/T2421C
dc.identifier.citationVinkó, J., K. Takáts, T. Szalai, G. H. Marion, J. C. Wheeler, K. Sárneczky, P. M. Garnavich et al. >Improved distance determination to M 51 from supernovae 2011dh and 2005cs.> Astronomy & Astrophysics, Vol. 540 (Apr., 2012): A93.en_US
dc.identifier.doi10.1051/0004-6361/201118364en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/2152/34307
dc.language.isoEnglishen_US
dc.relation.ispartofserialAstronomy & Astrophysicsen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectsupernovae: individual: 2011dhen_US
dc.subjectsupernovae: individual: 2005csen_US
dc.subjectgalaxies: individual: m51en_US
dc.subjectgalaxies: distances and redshiftsen_US
dc.subjectexpanding photosphere methoden_US
dc.subjectsn 2005csen_US
dc.subjectii supernovaeen_US
dc.subjectsupergianten_US
dc.subjectprogenitoren_US
dc.subjectatmospheresen_US
dc.subjectradiationen_US
dc.subjectexplosionen_US
dc.subjectevolutionen_US
dc.subjectsn-1993jen_US
dc.subjectplateauen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleImproved Distance Determination To M51 From Supernovae 2011dh And 2005csen_US
dc.typeArticleen_US

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