AstroNotes

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...

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 c...

We announce a public Deep Drilling program with DECam which will produce public alerts from the individual griz exposures and the nightly deep stacks, and run from March to June 2021.

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...

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 ...

Spectroscopy from the Liverpool Telescope shows AT2021gmj to be a young Type II supernova. The spectrum of AT2021gno is blue and featureless.

We observed AT 2021gca (ZTF21aapkbav) with the Lulin One-meter Telescope, Taiwan. We confirmed that the object is fading 0.3 mag per day in r-band since the discovery. The current magnitude r = 20....

We report the ZTF discovery of ZTF21aaqhhfu / 2021gno and ZTF21aaqgmjt / 2021gmj - two young supernova in the nearby galaxies NGC 4165 (z=0.0062,~46 Mpc) and NGC 3310 (z=0.0033,~13.1 Mpc). AT 2021g...

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 t...

We report the discovery of the fast, low-luminosity optical transient ZTF21aapkbav/AT2021gca with the Zwicky Transient Facility (ZTF). ZTF21aapkbav was first detected on 2021-03-17 09:23 UT at r=1...

Here we report the ATLAS discovery of the transient ATLAS21iid (AT2021gdz) in galaxy KUG 1150+203 at magnitude m_c = 18.39 +/- 0.08. At a distance of 93 Mpc, the transient was discovered on MJD = ...

Here we report the classification of AT 2021esi as a Type IIb SN.

We draw attention to the unusual lightcurve of AT2021esi from the combined ZTF and ATLAS survey data and Pan-STARRS1 observations. AT2021esi shows a rapidly rising and fast declining (1.5 mag in 10...

Here we report the ATLAS discovery of the transient ATLAS21iap (AT2021fpm) in galaxy MCG -02-51-008 at magnitude m_o = 16.69 +/- 0.04. At a distance of 81 Mpc, the transient was discovered on MJD ...

This report includes classifications of 5 transients.

We report the UV and X-ray detection of optical tidal disruption event (TDE) ZTF20acyydkh/AT2021ack.

This report includes the classification of AT 2021bxg as a Type IIn SN.

This report includes classifications of 7 transients.

We report ten 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...

This report includes the classification of AT 2021dwg as a Type Ic SN.

We report on optical observations of the fast blue transient ZTF21aakilyd/AT2021csp performed with Campo Imperatore Telescope.

We draw attention to the intrinsically faint and fast fading lightcurve of AT2021den from the combined Pan-STARRS and ATLAS survey data. It had a measured peak at M_w = -15.0 and a decline rate of ...

Motivated by recent discovery and classification reports of transients with spectra showing prominent narrow emission lines of carbon and/or oxygen, but lacking lines of hydrogen and helium, we pro...

We have obtained an optical spectrum of SN 2021crx, which shows it to be an unusually luminous member of the class of low-velocity Type II supernovae.

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 = 59267.2...

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...

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 = 59262.2...

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...

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....