000293421 001__ 293421 000293421 005__ 20250730113911.0 000293421 0247_ $$2doi$$a10.1088/0004-637X/811/2/117 000293421 0247_ $$2ISSN$$a0004-637X 000293421 0247_ $$2ISSN$$a0004-637x 000293421 0247_ $$2ISSN$$a1538-4357 000293421 0247_ $$2WOS$$aWOS:000363513800045 000293421 0247_ $$2datacite_doi$$a10.3204/PUBDB-2016-00510 000293421 0247_ $$2inspire$$ainspire:1388686 000293421 0247_ $$2altmetric$$aaltmetric:4418856 000293421 0247_ $$2openalex$$aopenalex:W1868769978 000293421 037__ $$aPUBDB-2016-00510 000293421 082__ $$a520 000293421 1001_ $$0P:(DE-H253)PIP1023448$$aStrotjohann, Nora L.$$b0$$udesy 000293421 245__ $$aSearch for Precursor Eruptions Among Type IIB Supernovae 000293421 260__ $$aChicago, Ill. [u.a.]$$bUniv.11032$$c2015 000293421 3367_ $$2DRIVER$$aarticle 000293421 3367_ $$2DataCite$$aOutput Types/Journal article 000293421 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1480948761_895 000293421 3367_ $$2BibTeX$$aARTICLE 000293421 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000293421 3367_ $$00$$2EndNote$$aJournal Article 000293421 500__ $$a(c) The American Astronomical Society 000293421 520__ $$aThe progenitor stars of several Type IIb supernovae (SNe) show indications of extended hydrogen envelopes. These envelopes might be the outcome of luminous energetic pre-explosion events, so-called precursor eruptions. We use the Palomar Transient Factory (PTF) pre-explosion observations of a sample of 27 nearby SNe IIb to look for such precursors during the final years prior to the SN explosion. No precursors are found when combining the observations in 15-day bins, and we calculate the absolute-magnitude-dependent upper limit on the precursor rate. At the 90% confidence level, SNe IIb have on average <0.86 precursors as bright as an absolute R-band magnitude of −14 in the final 3.5 years before the explosion and <0.56 events over the final year. In contrast, precursors among SNe IIn have a gsim5 times higher rate. The kinetic energy required to unbind a low-mass stellar envelope is comparable to the radiated energy of a few-weeks-long precursor that would be detectable for the closest SNe in our sample. Therefore, mass ejections, if they are common in such SNe, are radiatively inefficient or have durations longer than months. Indeed, when using 60-day bins, a faint precursor candidate is detected prior to SN 2012cs (~2% false-alarm probability). We also report the detection of the progenitor of SN 2011dh that does not show detectable variability over the final two years before the explosion. The suggested progenitor of SN 2012P is still present, and hence is likely a compact star cluster or an unrelated object. 000293421 536__ $$0G:(DE-HGF)POF3-613$$a613 - Matter and Radiation from the Universe (POF3-613)$$cPOF3-613$$fPOF III$$x0 000293421 536__ $$0G:(EU-Grant)307260$$aCOSMICEXPLOSIONS - The nature of cosmic explosions (307260)$$c307260$$fERC-2012-StG_20111012$$x1 000293421 536__ $$0G:(EU-Grant)615929$$aSPCND - Supernovae: Physics and Cosmology in the Next Decade (615929)$$c615929$$fERC-2013-CoG$$x2 000293421 588__ $$aDataset connected to CrossRef 000293421 693__ $$0EXP:(DE-H253)IceCube-20150101$$5EXP:(DE-H253)IceCube-20150101$$eIceCube South Pole Neutrino Observatory$$x0 000293421 7001_ $$aOfek, Eran O.$$b1 000293421 7001_ $$aGal-Yam, Avishay$$b2 000293421 7001_ $$aSullivan, Mark$$b3 000293421 7001_ $$aKulkarni, Shrinivas R.$$b4 000293421 7001_ $$aShaviv, Nir J.$$b5 000293421 7001_ $$aFremling, Christoffer$$b6 000293421 7001_ $$aKasliwal, Mansi M.$$b7 000293421 7001_ $$aNugent, Peter E.$$b8 000293421 7001_ $$aCao, Yi$$b9 000293421 7001_ $$aArcavi, Iair$$b10 000293421 7001_ $$aSollerman, Jesper$$b11 000293421 7001_ $$aFilippenko, Alexei V.$$b12 000293421 7001_ $$aYaron, Ofer$$b13 000293421 7001_ $$aLaher, Russ$$b14 000293421 7001_ $$aSurace, Jason$$b15 000293421 773__ $$0PERI:(DE-600)1473835-1$$a10.1088/0004-637X/811/2/117$$gVol. 811, no. 2, p. 117 -$$n2$$p117 -$$tThe astrophysical journal / 1$$v811$$x1538-4357$$y2015 000293421 8564_ $$uhttps://bib-pubdb1.desy.de/record/293421/files/APJ811.pdf$$yOpenAccess 000293421 8564_ $$uhttps://bib-pubdb1.desy.de/record/293421/files/APJ811.gif?subformat=icon$$xicon$$yOpenAccess 000293421 8564_ $$uhttps://bib-pubdb1.desy.de/record/293421/files/APJ811.jpg?subformat=icon-1440$$xicon-1440$$yOpenAccess 000293421 8564_ $$uhttps://bib-pubdb1.desy.de/record/293421/files/APJ811.jpg?subformat=icon-180$$xicon-180$$yOpenAccess 000293421 8564_ $$uhttps://bib-pubdb1.desy.de/record/293421/files/APJ811.jpg?subformat=icon-640$$xicon-640$$yOpenAccess 000293421 8564_ $$uhttps://bib-pubdb1.desy.de/record/293421/files/APJ811.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000293421 909CO $$ooai:bib-pubdb1.desy.de:293421$$pdnbdelivery$$pec_fundedresources$$pVDB$$pdriver$$popen_access$$popenaire 000293421 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1023448$$aDeutsches Elektronen-Synchrotron$$b0$$kDESY 000293421 9131_ $$0G:(DE-HGF)POF3-613$$1G:(DE-HGF)POF3-610$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lMaterie und Universum$$vMatter and Radiation from the Universe$$x0 000293421 9141_ $$y2015 000293421 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000293421 915__ $$0LIC:(DE-HGF)PublisherOA$$2HGFVOC$$aFree to read 000293421 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bASTROPHYS J : 2014 000293421 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000293421 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000293421 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index 000293421 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000293421 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000293421 915__ $$0StatID:(DE-HGF)9905$$2StatID$$aIF >= 5$$bASTROPHYS J : 2014 000293421 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000293421 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List 000293421 9201_ $$0I:(DE-H253)ZEU-ICE-20160806$$kZEU-ICE$$lNeutrinoteleskop$$x0 000293421 980__ $$ajournal 000293421 980__ $$aVDB 000293421 980__ $$aUNRESTRICTED 000293421 980__ $$aI:(DE-H253)ZEU-ICE-20160806 000293421 9801_ $$aFullTexts