AstroNote 2020-157

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2020-08-13 18:41:26
Type: Object/s-Discovery/Classification
Classification of AT2020pzz as a Type IIn SN
Authors: Benjamin Thomas (UT Austin), J. Craig Wheeler (UT Austin), Jozsef Vinko (U Szeged)
We report the classification of AT2020pzz as a Type IIn SN.

AT2020pzz (ATLAS20udk, ZTF20ablwaoe) was observed on the 10th August 2020 with the blue arm of the Low Resolution Spectrograph-2 (LRS2-B) mounted on the Hobby Eberly Telescope (HET) at McDonald Observatory, Texas. The spectrum was integrated for 1800s and had a wavelength coverage of 3640-6950 AA.

The spectrum shows multi-component (broad and narrow) emission features of the Balmer series, and broad He I 5876 AA. Spectroscopic classification was performed with SNID (Blondin & Tonry 2007 2007ApJ...666.1024B). The nine best matching templates are of Type IIn SNe at a redshift of z=0.090. We note that this spectroscopic redshift differs by >3σ from the photometric redshift of the faint host galaxy (z=0.331±0.073) that is available on the SDSS DR16 webpage. The ZTF light curve is consistent with a SN IIn currently around maximum light.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020pzz [ZTF20ablwaoe]23:27:48.263+01:55:46.76SN IIn0.0923:27:48.263+01:55:46.76