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Date and Time of the Query: 2019-06-19 T04:18:11 PDT
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For refcode 2015MNRAS.450.3289G:
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NED Abstract

Copyright by Royal Astronomical Society. 2015MNRAS.450.3289G The search for failed supernovae with the Large Binocular Telescope: first candidates Gerke, J. R.; Kochanek, C. S.; Stanek, K. Z. Abstract. We are monitoring 27 galaxies within 10 Mpc using the Large Binocular Telescope to search for failed supernovae (SNe), massive stars that collapse to form a black hole without an SN explosion. We present the results from the first 4 yr of survey data, during which these galaxies were observed to produce three successful core-collapse SNe. We search for stars that have 'vanished' over the course of our survey, by examining all stars showing a decrease in luminosity of DeltanuL_nu_ >= 10^4^ L_sun_ from the first to the last observation. We also search for the low luminosity, long duration transients predicted by Lovegrove & Woosley (2013) for failed explosions of red supergiants. After analysing the first 4 yr of data in this first direct search for failed SNe, we are left with one candidate requiring further study. This candidate has an estimated mass of 18-25 M_sun_, a mass range likely associated with failed SNe and, if real, implies that failed SN represents a median fraction of f ~= 0.30 of core collapses, with symmetric 90 per cent confidence limits of 0.07 <= f <= 0.62. If follow up data eliminate this candidate, we find an upper limit on the fraction of core collapses leading to a failed SN of f < 0.40 at 90 per cent confidence. As the duration of the survey continues to increase, it will begin to constrain the f ~= 10-30 per cent failure rates needed to explain the deficit of massive SN progenitors and the observed black hole mass function. Key words: black hole physics, surveys, stars: massive, supernovae: general
Retrieve 27 NED objects in this reference.
Please click here for ADS abstract

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