AstroNotes

Here we report the ATLAS discovery of the transient ATLAS21grj (AT2021dnn) in galaxy NGC 0304 at magnitude o = 15.71 +/- 0.03. At a distance of 65 Mpc, the transient was discovered on MJD = 59267.23 …

We have detected radio emission from the hydrogen-poor super-luminous supernova 2020tcw at 64 days post discovery.

This report includes the classification of one Type Ia SN at pre-maximum.

We have obtained an optical spectrum of SN 2021ckj, which shows it to be an unusual Type I supernova with narrow carbon and helium lines superimposed on a blue continuum with several broad spectral f…

Here we report the ATLAS discovery of the transient ATLAS21gks (AT2021dct) in galaxy NGC 1207 at magnitude o = 19.31 +/- 0.17. At a distance of 64 Mpc, the transient was discovered on MJD = 59262.22 …

Here we report the ATLAS discovery of the transient ATLAS21ghj (AT2021dch) in galaxy WISEA J130523.61+293037.2 at magnitude c = 18.42 +/- 0.08. At a distance of 88 Mpc, the transient was discovered o…

This report includes classifications of 3 normal Type Ia SNe, one SN Ia-91T, one young Type II SN showing flash features, and one object was classified as a CV.

Here we report the ATLAS discovery of the transient ATLAS21gfy (AT2021dbg) in galaxy MCG -01-24-014 at magnitude m_c = 18.13 +/- 0.06. At a distance of 92 Mpc, the transient was discovered on MJD = …

We report the detection of 6 GHz radio emission from the hydrogen-poor super-luminous supernova 2017ens

Here we report the ATLAS discovery of the transient ATLAS21flz (AT2021cwc) in galaxy UGC 03502 at magnitude c = 18.25 +/- 0.09. At a distance of 90 Mpc, the transient was discovered on MJD = 59258.38…

We report UV/optical and X-ray observations of the fast, luminous blue transient ZTF21aakilyd/AT2021csp.

We have obtained an optical spectrum of SN 2021cdw, which shows it to be a young Type II supernova.

We report the discovery of ZTF21aakilyd (AT 2021csp), a rapidly-rising and luminous (M ~ -20) blue transient at z=0.081. A Liverpool Telescope spectrum obtained shortly following the discovery is fe…

This report includes classifications of 3 Type Ia SNe and 1 Type II SN. For AT2021ckl the observed spectrum is consistent with only host galaxy light. The acquisition image of ZTF21aajezvp did not sh…

This report includes classifications of 3 Type Ia SNe, 2 Type II SNe, and 1 Type Ic SN.

We report the discovery of ZTF21aaiaqhh / 2021can - a rapidly rising young supernova in the nearby galaxy (z=0.0207, ~90 Mpc). The transient was discovered on February 07, 2021 at 07:55 UT with an ab…

We report the discovery of the fast optical transient ZTF21aahifke/AT2021clk with the Zwicky Transient Facility (ZTF, Bellm et al. 2019, Graham et al. 2019), as part of the "ZTFReST" project aiming a…

We draw attention to the rapidly fading lightcurve of AT2021buk from the combined ZTF and ATLAS survey data. The nature of AT2021buk is consistent with that of foreground CV, however, it is possible …

Here we report our VLA observation of the Type Ib/c supernova SN2021bhd. We detect a single point source (consistent with the position of SN2021bhd) with a flux level of ~0.47 mJy at a central freque…

Here we report the ATLAS discovery of the transient ATLAS21dov (AT2021bxu) in galaxy ESO 478- G 006 at magnitude m_c = 17.23 +/- 0.05. At a distance of 65 Mpc (redshift independent, from NED), the t…

We report on the ZTF discovery of ZTF21aagwbjr/AT2021buv, a fast optical transient that is temporally and spatially consistent with GRB210204A. ZTF21aagwbjr was first detected 45 minutes after the lo…

This report includes classifications of 8 Type Ias, 1 Type II, and 1 CV.

Here we report the ATLAS discovery of the transient ATLAS21dmw (AT2021bsf) in galaxy WISEA J120604.02+203213.0 at magnitude o = 17.16 +/- 0.06. At a distance of 104 Mpc, the transient was discovered …

This report includes classifications of 6 Type Ias, 1 Type Ia-91T-like, 1 TDE, 1 SLSN-I and 1 Type II.

This report includes the classification of 3 Type Ia SNe, 1 Type Ic-BL, and 1 blue transient at an unknown redshift. We also report negative transient detections for two targets.

Here we report the ATLAS discovery of the transient ATLAS21dkt (AT2021bmx) in galaxy ESO 317- G 006 at magnitude o = 17.17 +/- 0.06. At a distance of 51 Mpc, the transient was discovered on MJD = 592…

Here we report the ATLAS discovery of the transient ATLAS21dks (AT2021bmw) in galaxy IC 4325 at magnitude o = 17.93 +/- 0.12. At a distance of 68 Mpc, the transient was discovered on MJD = 59247.54 (…

We carried out radio follow-up observations of SN 2020adow with the Jansky VLA. Measured fluxes at 5 GHz are reported.

We update the classification of AT 2021tf as a Type Ibn supernova using the Lick 3-m Shane telescope.

This report includes classifications of 4 Type Ia, 1 Type Ia-pec, 1 Type Ibc, 1 Type I, and 1 AGN.

Here we report the ATLAS discovery of the transient ATLAS2021dia (AT2021bls) offset by 50 kpc from NGC 6223 at magnitude o = 17.39 +/- 0.05. At a distance of 80 Mpc, the transient was discovered on M…

Here we report the ATLAS discovery of the transient ATLAS21dic (AT2021blu) in galaxy UGC 05829 at magnitude m_o = 18.49 +/- 0.18. At a distance of 8 Mpc, the transient was discovered on MJD = 59246…

Here we report the ATLAS discovery of the transient ATLAS21dib (AT2021blt) in galaxy NGC 4214 at magnitude m_o = 18.52 +/- 0.12. At a distance of 3 Mpc, the transient was discovered on MJD = 59246.5…

Here we report the ATLAS discovery of the transient ATLAS21dhs (AT2021bkx) in galaxy WISEA J033454.41-004720.1 at magnitude m_o = 18.67 +/- 0.14. At a distance of 96 Mpc, the transient was discovere…

Here we report the ATLAS discovery of the transient ATLAS21dhp (AT2021bkw) in galaxy 2MASX J14211351+2042536 at magnitude m_o = 16.55 +/- 0.05. At a distance of 82 Mpc, the transient was discovered …

Here we report the spectroscopic classification of SN 2021bhd (ATLAS21dfr; Shingles et al. Astronote 2021-31) in galaxy UGC 08737. The spectrum shows a good match with several Type Ib/c supernovae. T…

Here we report the ATLAS discovery of the transient ATLAS21dgf (AT2021bjk) in galaxy MCG -02-06-017 at magnitude m_o = 18.65 +/- 0.13. At a distance of 71 Mpc, the transient was discovered on MJD = 5…

This report includes classifications of 6 Type Ia's and an unclassified object.

This report includes classifications of 2 Type Ia's, and 1 inconclusive object.

Here we report the ATLAS discovery of the transient ATLAS21dgc (AT2021bjb) in galaxy ABELL S0753:[WFC91] 065 at magnitude o = 18.08 +/- 0.19. At a distance of 57 Mpc, the transient was discovered on …

Here we report the ATLAS discovery of the transient ATLAS21dfz (AT2021biz) in galaxy NGC 4227 at magnitude m_o = 18.34 +/- 0.16. At a distance of 97 Mpc (redshift independent, from NED), the transie…

Here we report the ATLAS discovery of the transient ATLAS21dfy (AT2021biy) in galaxy NGC 4631 at magnitude m_o = 18.12 +/- 0.14. At a distance of 4 Mpc (redshift independent, from NED), the transien…

We report on the classification of SN 2020adkm as a SLSN at z = 0.226. In addition, we identify possible broad H-alpha emission and absorption in this event, which otherwise matches the spectral fea…

Here we report the ATLAS discovery of the transient ATLAS21dfr (AT2021bhd) in galaxy UGC 08737 at magnitude m_o = 18.51 +/- 0.18. At a distance of 39 Mpc, the transient was discovered on MJD = 59242…

Here we report the classification of 6 optical transients with 3 SN Ia: SN2020aett, SN2021Y, SN2021dn; 2 SN IIP: SN2020zjk, SN2020addp; and 1 SN Ib: SN2021dx.

This report includes classifications of 4 Type Ia's, 1 02cx-like SNIa, 1 91T-like SNIa, 1 SN Ibn, and 1 Type II SN

This report includes classifications of 1 Type Ia 91bg-like SN, and a noisy spectrum of an unclassified transient.

We report the spectroscopic classification of AT 2020aeuv, 2021lx, 2021xv and 2021avg.

Here we report the ATLAS discovery of the transient ATLAS21dao (AT2021bbm) in galaxy NGC 2959 at magnitude m_o = 17.53 +/- 0.10. At a distance of 63 Mpc, the transient was discovered on MJD = 59238…

This report includes classifications of 4 Type Ia's, and 1 object showing a blue continuum.