SN 2017hig
RA/DEC (2000)
10:33:17.600 +16:24:27.14
158.323333 +16.407539
Type
SN Ia
Redshift
0.045
Source Group
GaiaAlerts
Discovery Date
2017-10-11 11:47:02
TNS AT
Y
Public
Y
Discovery Mag
17.53
Filter
G-Gaia
Discoverer/s
A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts team

Spectra

 SN_2017hig - 2017-10-14 15:38:52 Keck2 / DEIMOS (LOSS)z=
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   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
14362017-10-14 15:38:52Keck2 / DEIMOS300WeiKang Zheng, Thomas de Jaeger, Thomas G. Brink, Alexei. V. Filippenko (UC Berkeley)Thomas de JaegerLOSS tns_2017hig_2017-11-14.652_Keck2_DEIMOS_LOSS.txtObjectLOSS
Light Curves
FilterTel / InstObs-date rangePhotometry
G-GaiaGaia_Gaia-photometric2017-07-10 10:27:50 - 2017-10-11 11:47:022
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
211832017-10-11 11:47:0217.530.2ABMagG-GaiaGaia_Gaia-photometric60Robot
211822017-07-10 10:27:5021.5ABMagG-GaiaGaia_Gaia-photometricRobot[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
141002017-10-13 09:40:26Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts10:33:17.600+16:24:27.142017-10-11 11:47:0217.53G-GaiaPSNGaia17cowGaiaAlertscandidate SN near galaxy 2MASX J10331713+1624254
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
14322017-11-18 07:21:22weikangWeiKang Zheng, Thomas de Jaeger, Thomas G. Brink, Alexei. V. Filippenko (UC Berkeley)LOSSSN Ia0.045LOSSThe spectrum matches those of several normal Type Ia SNe a few days before maximum light. Adopting a redshift z = 0.045 from the assumed host galaxy 2MASX J10331713+1624254, the expansion velocity measured from the minimum of the Si II 635.5 nm line is ~14,100 km/s.

Comments

ATEL 10979 gives spectrum date as 2017-10-14.65 which is consistent with spectrum being pre maximum