SN 2017eex
RA/DEC (2000)
10:23:19.406 +22:23:38.29
155.830858 +22.393969
Type
SN Ia
Redshift
---
Source Group
ASAS-SN
Discovery Date
2017-05-21 06:28:48
TNS AT
Y
Public
Y
Host Name
MCG +04-25-014
Host Redshift
0.03966
Comments
[Object redshift updated according to host-redshift by admin]
Discovery Mag
17.4
Filter
V-Johnson
Discoverer/s
G. Stone, R. Post, K. Z. Stanek, for the ASAS-SN team

Spectra

 SN_2017eex - 2017-05-23 04:42:30 FLWO-1.5m / FAST (ASAS-SN)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
10152017-05-23 04:42:30FLWO-1.5m / FASTM. Calkins (Harvard CfA)ASAS-SN tns_2017eex_2457896.696195_FLWO_1.5m_FAST_ASAS-SN.txt tns_2017eex_2457896.696195_FLWO_1.5m_FAST_ASAS-SN.fitsObjectASAS-SN
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-1_Brutus2017-05-14 07:12:00 - 2017-05-21 06:28:483
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
172062017-05-21 06:28:4817.4VegaMagV-JohnsonASASSN-1_Brutus
172072017-05-16 06:57:3617.4VegaMagV-JohnsonASASSN-1_Brutus
172052017-05-14 07:12:0017.4VegaMagV-JohnsonASASSN-1_Brutus[Last non detection]
G-GaiaGaia_Gaia-photometric2017-04-12 22:03:21 - 2017-05-21 15:17:162
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
172392017-05-21 15:17:1617.580.2ABMagG-GaiaGaia_Gaia-photometric60Robot
172382017-04-12 22:03:2121.5ABMagG-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
116532017-05-23 07:25:30Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts10:23:19.360+22:23:38.472017-05-21 15:17:1617.58G-GaiaPSNGaia17bigGaiaAlertscandidate SN near galaxy MCG +04-25-014, GS-TEC predicts SN Ia t=5 (aka ASASSN-17gl)
116292017-05-22 04:28:20KZStanekG. Stone, R. Post, K. Z. Stanek, for the ASAS-SN teamASAS-SN10:23:19.406+22:23:38.292017-05-21 06:28:4817.4V-JohnsonPSNASASSN-17glASAS-SNIn several epochs, confirmed by R. Post and G. Stone
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
10052017-05-23 18:22:24jlprieto E. Falco (Harvard CfA), J. L. Prieto (UDP; MAS)ASAS-SNSN IaASAS-SNWe obtained an optical spectrum of ASASSN-17gl/AT2017eex on UT 2017 May 23.2 with FAST mounted on the FLWO 1.5m telescope. The spectrum is that of a normal SN Ia at maximum light. Cross-correlation with a library of SN spectra using SNID (Blondin & Tonry 2007) shows that ASASSN-17gl is best fit with normal SN Ia at an age of +3 days after maximum light (best-fit template is the spectrum of SN Ia 2001ep at +3 days). After correcting for the host galaxy redshift, we measure a Si II 6355 Angs. expansion velocity of 10800 km/s.