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Swift UVOT Observations of SN2018apl/ASASSN-18gq

ATel #11501; Brown, Peter J. (Mitchell Institute, Texas A&M University)
on 3 Apr 2018; 20:25 UT
Credential Certification: Peter J. Brown (grbpeter@yahoo.com)

Subjects: Optical, Ultra-Violet, Supernovae

Referred to by ATel #: 11509, 11518, 11532

SN2018apl/ASASSN-18gq (ATEL #11500) was observed by the Neil Gehrels Swift Observatory beginning 2018-04-03 15:28:06. We measured the magnitudes below from summed images from the first orbit of observations using the Swift Optical Ultraviolet Supernova Archive (SOUSA; Brown et al. 2014). They have not been corrected for galaxy contamination or dust reddening.

Filter MJD Mag MagErr
UVW2 58211.67 15.26 0.06
UVM2 58211.67 15.30 0.09
UVW1 58211.66 15.47 0.06
V 58211.66 16.60 0.08

The blue UV-optical colors are consistent with a young core-collapse supernova (Brown et al. 2015, arXiv:1505.01368).

These observations were triggered as part of a Swift GI program: SUPERNOVA KEY PROJECT: SWIFT RESPONSE TO NEARBY SUPERNOVAE. We thank the Swift team for the prompt execution of these observations.