@misc{10481/64587,
year = {2020},
month = {5},
url = {http://hdl.handle.net/10481/64587},
abstract = {AT2018cow was the nearest and best studied example of a new breed of extra-galactic, luminous and rapidly-evolving transient. Both the progenitor systems and explosion mechanisms of these rapid transients remain a mystery { the energetics, spectral signa- tures, and timescales make them challenging to interpret in established classes of super- novae and tidal disruption events. The rich, multi-wavelength data-set of AT2018cow has still left several interpretations viable to explain the nature of this event. In this paper we analyse integral- eld spectroscopic data of the host galaxy, CGCG137-068, to compare environmental constraints with leading progenitor models. We nd the explosion site of AT2018cow to be very typical of core-collapse supernovae (known to form from stars with MZAMS 8-25 M ), and infer a young stellar population age at the explosion site of few 10Myr, at slightly sub-solar metallicity. When comparing to expectations for exotic intermediate-mass black hole (IMBH) tidal disruption events, we nd no evidence for a potential host system of the IMBH. In particular, there are no abrupt changes in metallicity or kinematics in the vicinity of the explosion site, ar- guing against the presence of a distinct host system. The proximity of AT2018cow to strong star-formation in the host galaxy makes us favour a massive stellar progenitor for this event.},
organization = {Science & Technology Facilities Council (STFC)

Science and Technology Development Fund (STDF)

ST/P000495/1},
organization = {European Union (EU)

839090},
organization = {European Union (EU) PGC2018-095317-B-C21},
organization = {Consejo Nacional de Ciencia y Tecnologia (CONACyT) CB-285080 FC-2016-01-1916},
organization = {(UNAM) project 	
PAPIIT-DGAPA-IN100519},
organization = {European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme 	
0103.D-0440(A)},
publisher = {Oxford Univ Press},
keywords = {Stars: massive},
keywords = {Supernovae: general},
keywords = {Supernovae: individual: AT2018cow},
keywords = {Galaxies: individual: CGCG137-068},
title = {Studying the environment of AT2018cow with MUSE},
doi = {10.1093/mnras/staa1243},
author = {Lyman, J. D. and Galbany González, Lluis and Sánchez, S. F. and Anderson, J. P. and Kuncarayakti, H.},
}