energy of $\sim 5.4\times10^{50}$ erg and a total ejected mass of $\sim 16.7$. The latter indicates that the zero age main-sequence mass of the progenitor did not exceed 20. Considering the above properties of and its occurrence in a region of sub-solar metallicity (\[O/H\] $\sim$ 8.44 dex), it is unlikely that fall-back of the ejecta onto a newly formed black hole occurred in SN 2008in. We therefore favor a low-energy explosion scenario of a relatively compact, moderate-mass progenitor star that generates a neutron star.'
author:
- 'Rupak Roy$^\star$, Brijesh Kumar, Stefano Benetti, Andrea Pastorello, Fang Yuan, Peter J. Brown, Stefan Immler, Timur A. Fatkhullin, Alexander S. Moskvitin, Justyn Maund, Carl W. Akerlof, J. Craig Wheeler, Vladimir V. Sokolov, Rorbert M. Quimby, Filomena Bufano, Brajesh Kumar, Kuntal Misra, S. B. Pandey, Nancy Elias-Rosa, Peter W. A. Roming and Ram Sagar'
title: ' $-$ Bridging the gap between normal and faint supernovae of type IIP'
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introduction {#intro}
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Core-collapse Type II supernovae (SNe) mark the violent death of stars with main-sequence masses greater than 8  and as is indicated by the presence of hydrogen lines in their optical spectra, they originate from a progenitor star with a significant amount of hydrogen 