AstroNotes

We report 7 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is >30 days and a typical peak r-band magnitude is 19-20…

This report includes classifications of 1 type Ia (SN 2021knh) and 1 type Ic-peculiar SN (SN 2021krf). SN 2021krf presents some similarities with the peculiar type-Ic SN 2005ek, as it shows C II line…

We observed AT2021lfa with GMOS-S, and identify z=1.063 as the most probable redshift for this candidate afterglow.

We report the discovery of a fast-fading red transient (a candidate afterglow).

We classify SN 2020jyh as a young Type Ia supernova using spectra from the Southern African Large Telescope (SALT).

Here we report the ATLAS discovery of the transient ATLAS21nmi (AT2021koq) in galaxy UGC 11177 at magnitude o = 17.84 +/- 0.11. At a distance of 84 Mpc, the transient was discovered on MJD = 59332.49…

Here we report the ATLAS discovery of the transient ATLAS21nlx (AT2021koj) in galaxy MCG-02-22-003 at magnitude o = 18.19 +/- 0.08. At a distance of 64 Mpc, the transient was discovered on MJD = 5933…

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…

We highlight photometric and spectroscopic observations of ATLAS21nak (AT2021kgj), discovered in the host galaxy NGC 4188 at z = 0.014 (65 Mpc). Spectra indicate it is a type IIn and historic detecti…

We report the classification of SN2021fpl as a SLSN-I

We report the discovery of a highly reddened and rapidly rising Galactic transient by the Palomar Gattini-IR survey. The source PGIR21fjn / AT2021kgk was first detected on UT 2021-04-19 at a magnitud…

Here we report the spectroscopic classification of SN 2021jvp (PS21dhv; Chen et al. AstroNote 2021-124) in galaxy WISEA J142047.66-194744.9. The spectrum shows a good match with SN 1991bg around pea…

we report on behalf of the DESIRT team on three rapidly rising transients.

We report the identification of a fast-evolving transient by the Zwicky Transient Facility.

Here we report the ATLAS discovery of the transient ATLAS21nak (AT2021kgj) in galaxy NGC 4188 at magnitude m_o = 17.15 +/- 0.06. At a distance of 65 Mpc, the transient was discovered on MJD = 59322…

We report spectroscopic classifications of three SNe-Ia and one 91T-like event.

This report includes classifications of two Type Ia's, one Type II, and one Type Ic.

We have obtained optical spectra of SN 2021jom and SN 2021jwd, which show them to be young Type II supernovae approximately a week after explosion.

This report includes classifications of two Type Ia's, two Type II's, and one peculiar Type II. The peculiar Type II SN 2021hqe is similar to SN 1987A around three weeks after explosion.

This report includes classifications of 6 SNe Ia, 1 SN IIn, 1 CV, and 1 He nova.

We have obtained an optical spectrum of SN 2021jpk, which shows it to be a Type Ibn supernova a few days before or at maximum.

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 three SNe Ia, one SN Ib, and a reclassification of the former blue, featureless transient SN 2021iso as a SN II.

We have obtained optical spectra of SN 2021inc and SN 2021jmg, which show them to be a young Type II supernova and a Type Ic supernova close to maximum, respectively.

Here we report the ATLAS discovery of the transient ATLAS21lte (AT2021iwv) in galaxy MCG +15-01-008 at magnitude c = 18.29 +/- 0.17. At a distance of 67 Mpc, the transient was discovered on MJD = 593…

We report 7 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is about 50 days and a typical peak r-band magnitude is …

This report includes classifications of 4 SNe Ia, 1 SN IIP, 1 SN IIn, and 2 CVs. The SN IIP and the SN IIn are located in the same host galaxy and exploded within a few weeks of each other.

Here we report the ATLAS discovery of the transient ATLAS21lyp (AT2021jad) in galaxy NGC 1964 at magnitude m_c = 15.42 +/- 0.01. At a distance of 20 Mpc, the transient was discovered on MJD = 59315…

This report includes classifications of three Type Ia's, three Type II's, and a young blue featureless transient.

This report includes the classification of one Type Ia supernova.

Here we report the DESIRT discovery of the transient AT2021irn in galaxy 2MFGC 11748 (z= 0.05684), and AT2021iro in galaxy LEDA 1226591 (z= 0.13717). AT2021irn was discovered on 2021-04-06 05:56 UT w…

We report spectroscopic classification of AT2021hud as a SN II

We report spectroscopic classifications of three SNe Ia.

This report includes classifications of 6 Type Ia's, 1 Type Ic, 4 Type II's, and a CV. SN2021fox shows particularly strong and broad HeI5876+NaID.

This report includes classifications of 1 Type Ia and a re-classification of a superluminous supernova (SLSN) as a Type II SLSN.

We report spectroscopic classifications of 3 optical transients, including two SNe Ia and one SN IIb.

This report includes classifications of 2 transients: a SN Ic-BL and a SLSN-II

We report the spectroscopic classification of SN 2021hpr in NGC 3147 (z=0.009346)

We classify SN 2021dqs as a Type II SN. It's ZTF light curve indicates a rise time of >35 days with a rebrightening.

We report the discovery of the fast optical transient ZTF21aaquyjp/AT2021hel with the Zwicky Transient Facility (ZTF). ZTF data at these coordinates are public and the light curve of ZTF21aaquyjp can…

We report the discovery and classification of ZTF21aanxhjv/AT2021ehb, a young, UV-bright tidal disruption event in a galaxy at z=0.017, still on the rise to peak.

We report six ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is about 40 days and a typical peak r-band magnitude i…

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

This report includes classifications of 3 transients.

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

This report includes classifications of 3 transients.

We identify SN 2021flc as a SLSN-I candidate.

This report includes classifications of 5 transients.

We report spectroscopic classification of AT2021fom as a SN Ia.

We observed the fast optical transient ZTF21aapkbav/AT2021gca (Andreoni et al., AstroNote 2021-89; Chen et al., AstroNote 2021-92) with the Gemini North telescope equipped with the GMOS instrument (p…