Swift/UVOT Observations of SN2019lsm
Abstract
SN2019lsm, aka ASASSN-19sf, was discovered by ASAS-SN (Bersier et al. 2019, TNS report 42344) and classified by Frohmeier et al. (AstroNote 2019-58) as a type Ibn SN. The Neil Gehrels Swift Observatory observed SN2019lsm on 2019-08-01 beginning at 01:09:47 UT. We measured the following Vega magnitudes on the Swift system (Breeveld et al. 2011) using the pipeline for the Swift Optical Ultraviolet Supernova Archive (SOUSA; Brown et al. 2014): Filter MJD Mag Magerr UVW2 58696.1 17.36 0.08 UVM2 58696.1 17.19 0.09 UVW1 58696.1 17.04 0.09 U 58696.1 17.10 0.08 B 58696.1 18.33 0.11 V 58696.1 18.12 0.16 The UV-Optical colors are comparable to the Ibn SN2006jc (Immler et al. 2008).
- Publication:
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The Astronomer's Telegram
- Pub Date:
- August 2019
- Bibcode:
- 2019ATel12978....1C
- Keywords:
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- Supernovae