SN 2018brz
RA/DEC ()
08:33:22.300 -76:37:39.83
128.342917 -76.627731
Type
SN Ia
Redshift
0.019
Source Group
ASAS-SN
Discovery Date
2018-05-15 01:26:24
TNS AT
Y
Public
Y
Host Name
2MASX J08332211-7637363
Discovery Mag
16.5
Filter
g-Sloan
Discoverer/s
K. Z. Stanek, for the ASAS-SN team
Separated 37,050.600 arcsec from TESS-active sector/s (12,13) source : RA=11:49:11.040, DEC=-83:22:45.12
Separated 18,199.200 arcsec from TESS-active sector/s (12,13) source : RA=07:03:47.316, DEC=-77:37:22.44
Separated 38,168.100 arcsec from TESS-active sector/s (12,13) source : RA=05:15:04.922, DEC=-78:07:24.60
Separated 37,050.600 arcsec from TESS-Sector12 source : RA=11:49:11.040, DEC=-83:22:45.12
Separated 18,199.200 arcsec from TESS-Sector12 source : RA=07:03:47.316, DEC=-77:37:22.44
Separated 38,168.100 arcsec from TESS-Sector13 source : RA=05:15:04.922, DEC=-78:07:24.60

Spectra

 SN_2018brz - 2018-05-19 09:15:00 Other / Other (None)z=
Show H at z=vexp= km/s
Show He at z=vexp= km/s
Show He II at z=vexp= km/s
Show O at z=vexp= km/s
Show [O I] at z=vexp= km/s
Show O II at z=vexp= km/s
Show [O II] at z=vexp= km/s
Show [O III] at z=vexp= km/s
Show Na at z=vexp= km/s
Show Mg at z=vexp= km/s
Show Mg II at z=vexp= km/s
Show Si II at z=vexp= km/s
Show S II at z=vexp= km/s
Show Ca II at z=vexp= km/s
Show [Ca II] at z=vexp= km/s
Show Fe II at z=vexp= km/s
Show Fe III at z=vexp= km/s
Show Å at z=vexp= km/s
Show Å at z=vexp= km/s
Show Tellurics 
Show Galaxy lines at z=
Show WR-WN at z=vexp= km/s
Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
20402018-05-19 09:15:00Other / Other600 Lluis Galbany (U. Pitt), Angel R. Lopez-Sanchez (AAO, Maquarie U.), Yago Ascasibar (UAM), Kristin Fiegert (AAO) Angel R. Lopez-Sanchez (AAO, Maquarie U.)None tns_2018brz_2018-05-19_09-15-00_Other_Other.txtObjectObservations were performed on the 4m Anglo-Australian Telescope at Siding Spring Observatory using Koala+AAOmega and Grisms 580V+1000R (3500-6000A and 6300-7300A).
Light Curves
FilterTel / InstObs-date rangePhotometry
G-GaiaGaia_Gaia-photometric2018-04-12 09:12:57 - 2018-05-17 14:52:482
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
287462018-05-17 14:52:4815.980.2ABMagG-GaiaGaia_Gaia-photometric60Robot
287452018-04-12 09:12:5721.5ABMagG-GaiaGaia_Gaia-photometricRobot[Last non detection]
g-SloanASASSN-3_Paczynski2018-05-08 23:02:24 - 2018-05-15 01:26:242
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
285782018-05-15 01:26:2416.5ABMagg-SloanASASSN-3_Paczynski
285772018-05-08 23:02:2417.6ABMagg-SloanASASSN-3_Paczynski[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
187042018-05-20 20:32:37Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts08:33:22.300-76:37:39.832018-05-17 14:52:4815.98G-GaiaPSNGaia18bgkGaiaAlertsconfirmed SN Ia SN 2018brz
186222018-05-15 22:14:31KZStanekK. Z. Stanek, for the ASAS-SN teamASAS-SN08:33:22.277-76:37:39.862018-05-15 01:26:2416.5g-SloanPSNASASSN-18kdASAS-SNIn several epochs, unknown redshift host
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
20352018-05-19 15:28:22lgalbany Lluis Galbany (U. Pitt), Angel R. Lopez-Sanchez (AAO, Maquarie U.), Yago Ascasibar (UAM), Kristin Fiegert (AAO)NoneSN Ia0.019We report the spectroscopic classification of SN 2018brz (RA=08:33:22.27, DEC=-76:37:39.8) in an anonymous host galaxy. The candidate was discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN: Shappee et al. 2014) on UT 2018-05-15 at ~16.5 mag. Observations were performed on the 4m Anglo-Australian Telescope at Siding Spring Observatory on 2018 May 19 9:15 UT, using Koala+AAOmega and Grisms 580V+1000R (3500-6000A and 6300-7300A). Classification was done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). The spectrum shows the typical "W" SII absorption (5454,5640A), and MgII, and FeII features characteristic of type Ia supernovae. SNID gives a reasonable fit to all its main spectral features with the pre-peak spectrum of SN 1999aa placed roughly at z ~ 0.019. Velocities measured at the bottom of both SII absorptions are consistent with -9,500 km/s.

Comments

Object coordinates updated according to AT-report 18704 of Group GaiaAlerts
Previous RA, DEC: 08:33:22.277, -76:37:39.86 (128.34282, -76.62774)
Updated RA, DEC: 08:33:22.300, -76:37:39.83 (128.342917, -76.627731)