AstroNotes

This report includes classifications of 4Type Ia's.

Here we report the ATLAS discovery of the transient ATLAS20bhby (AT2020abyx) in galaxy ESO 509- G 045 at magnitude m_o = 16.76 +/- 0.03. At a distance of 48 Mpc (redshift independent, from NED), the…

This report includes classifications of 2 Type Ia's.

This report includes classifications of 2 Type Ia, 2 Type II, 1 Type SLSN-IIn. SN2020abtf shows a blue continuum with a bump at around ~4700A, which we associated to CIV 4648A. We classified it as a …

Here we report the discovery and classification of SN2020abog (ZTF20acpgjac) as a SN Ia.

Here we report the classification of 3 optical transients with 1 SN Ia: SN2020aajf and 2 SN IIP: SN2020tfb and SN2020vfv.

Here we report the ATLAS discovery of the transient ATLAS20bgkn (AT2020able) in galaxy WISEA J092602.94+243114.9 at magnitude o = 18.95 +/- 0.18. At a distance of 108 Mpc, the transient was discovere…

Here we report the ATLAS discovery of the transient ATLAS20bgkm (AT2020abjq) in galaxy UGC 678 at magnitude o = 17.42 +/- 0.06. At a distance of 72 Mpc, the transient was discovered on MJD = 59185.38…

Here we report the ATLAS discovery of the transient ATLAS20bgez (AT2020abcq) in galaxy ESO 563- G 017 at magnitude m_o = 18.80 +/- 0.18. At a distance of 58 Mpc, the transient was discovered on MJD …

Here we report the ATLAS discovery of the transient ATLAS20bgey (AT2020abcp) in galaxy CGCG 044-044 NED02 at magnitude m_o = 17.14 +/- 0.13. At a distance of 104 Mpc, the transient was discovered on…

We report the spectroscopic classification of SN 2020aary, SN 2020aatc, SN 2020aaul and SN 2020aauk as young SNe Ia and of SN 2020aatb as a young SN II.

This classification includes the report of 2 Type Ia's and 1 Galaxy. ZTF20acqyfdh shows a spectrum that is relatively blue, and shows narrow (unresolved) emission lines that are likely from the host…

This report includes the classification of 1 Type Ia and 1 Type IIn. SN 2020yrn is a Type IIn at z=0.123. First discovery by Gaia means it is at least one month from explosion. We see a blue continuu…

This report includes classifications of 6 Type Ia's, 1 Type II, and 1 ambiguous object. SN2020zoq is a young Type II, with a blue continuum and clear P-Cygni Balmer series and NaD/HeI. AT2020znl has…

This report includes classifications of 5 Type Ia's, a superluminous supernova, and a tidal disruption event. The TDE appears to have a fast rise and was discovered before peak. Swift follow-up obser…

Here we report the classification of 8 optical transients with 5 SN Ia: SN2020wuw, SN2020ycx, SN2020yfo, SN2020ypm, SN2020ywz; 1 SN II: SN2020tqq and 2 SN IIn: SN2020ryo, SN2020vou.

This report includes classifications of a type Ib/c supernova.

We have obtained an optical spectrum of SN 2020zia, which shows it to be a young Type II supernova.

This report includes classifications of 8 Type Ia's, a potentially very young SN Ib-pec, 1 AGN, and a cataclysmic variable.

We are carrying out the "Pan-STARRS Search for Kilonovae" in galaxies which are closer than 200 Mpc in the ongoing Pan-STARRS Near Earth Object surveys (see Smartt et al. AstroNote 2019-48 for detail…

Here we report the discovery and classification of SN2020zct (ZTF20acezhcf) as a SN Iax[02cx-like].

This report includes the classification of 4 Type Ia's, 1 Type Ia-91bg like, and 2 Type IIs. AT2020yxk shows a blue continuum with possible weak broad features, consistent with a SN II at z=0.13. AT…

Here we report the classification of 5 optical transients with 2 SN Ia: SN 2020tjo, SN 2020vem; 1 SN IIP: SN 2020tet; 1 SN IIn: SN 2020tyk; and 1 SLSN: SN 2020xgd.

This report includes classifications of 4 type Ia's and 2 Type II's. AT2020yyw is consistent with a Type II a few days after explosion. Its host galaxy is not in NED, implying that it is potentially …

We have obtained an optical spectrum of SN 2020yts, which shows it to be a young Type II supernova.

This report includes classifications of 2 Type Ia's, 1 Type IIn, and 2 transients with a blue continuum. AT2020yxf has tentative detection of an emission feature at 6563A, potentially consistent with…

This report includes classifications of 3 Type Ia's, and 1 SLSNe Ic. SN2020xga SLSN Ic at z=0.36, relatively soon after explosion. We encourage followup observations.

This report includes classifications of ATLAS20best as Supernova Type Ia at maximum.

We report the discovery of the fast optical transient ZTF20acozryr/AT2020yxz with the Zwicky Transient Facility (ZTF, Bellm et al. 2019, Graham et al. 2019) at coordinates (J2000,

This report includes classifications of 8 Type Ia's, and 1 galaxy. The spectrum of AT2020yrk reveals only galaxy light, and inspection of the acquisition images reveals no point source distinct from …

Here we report the ATLAS discovery of the transient ATLAS20bewg (AT2020ywx) in galaxy WISEA J115326.45+105347.2 at magnitude o = 16.53 +/- 0.06. At a distance of 96 Mpc, the transient was discovered …

This report includes classifications of 7 Type Ia's and 1 AGN.

We are carrying out the "Pan-STARRS Search for Kilonovae" which is a focused search for intrinsically faint transients, or rapidly evolving transients in galaxies which are closer than 200 Mpc in the…

This report includes classifications of 4 Type Ia's, 1 Type II and one blue featureless transient.

This report includes classifications of 5 Type Ia's, one galaxy and one nuclear transient. AT2020xys has a boxy He II 4686 feature as well as Bowen features, and resembles the AT2017bgt-like class o…

This report includes classifications of 5 Type Ia's, 2 Type II's, one galaxy and one blue, featureless transients.

We report on a spectrum of SN2019yxk, a transient showing a very long-lived plateau phase. The spectral signatures suggest a SN IIn classification. Strong H-alpha and H-beta, purely in emission, are …

We report the ATLAS discovery of a very long lived supernova-like transient ATLAS19bepo (AT2019yxk) offset by 5 arcseconds from the galaxy WISEA J041345.99-222607.4. We originally discovered ATLAS19…

This report includes classifications of 3 Type Ia's, of which 1 is a 91-T-like, 1 Type II and a galaxy. We also confirm the previously reported classifications of PS20khn as a SN II and AT2020wcj as …

This report includes classifications of 7 Type Ia's, 3 Type II's, 1 Type IIn, 1 Type Ib, 1 Type I, and 2 objects with blue featureless spectra. SN2020xkg is a Type II SN at ~+30d showing very low pho…

We have obtained an optical spectrum of SN 2020xlo, which shows it to be a young Type II supernova.

This report includes classifications of 3 Type Ia's, 1 Type II, and a likely Galactic cataclysmic variable. AT2020xqa shows a blue, featureless continuum and is a possible young core-collapse superno…

We report the classification of AT 2020wey / ZTF20acitpfz as a Tidal Disruption Event

Here we report the ATLAS discovery of the transient ATLAS20befn (AT2020xua) in galaxy UGC 12218 at magnitude c = 18.08 +/- 0.05. At a distance of 95 Mpc, the transient was discovered on MJD = 59143.3…

We report the discovery of ZTF20aclwclm / AT 2020xtz, a young transient in galaxy NGC 6574 reported by the ALeRCE broker (TNS #86978) using the ZTF public alert stream. The object was detected at 18…

We have obtained an optical spectrum of SN 2020win, which shows it to be a 91T-like peculiar Type Ia supernova at, or a few days before, maximum brightness.

Here we report the ATLAS discovery of the transient ATLAS20bdor (AT2020xkg) in galaxy ESO 564- G 031 at magnitude m_o = 18.24 +/- 0.19. At a distance of 68 Mpc, the transient was discovered on MJD =…

Here we report the ATLAS discovery of the transient ATLAS20bdoq (AT2020xhs) in galaxy UGC 01532 at magnitude m_c = 19.11 +/- 0.17. At a distance of 99 Mpc, the transient was discovered on MJD = 5914…

We report on the spectroscopic classification of three Type-I superluminous supernovae (SLSNe) and one Type-II SLSN, in addition to a Type-Ia and a Type-II SN. These SNe were selected with the Findin…

We announce the classifications of six SNIa: 2020tns, 2020soy, 2020uog, 2020uca, 2020ttg, and 2020uwo.