AT 2017gwx
RA/DEC ()
21:55:48.960 -17:48:56.88
328.954 -17.8158
Type
CV
Redshift
0
Source Group
ASAS-SN
Discovery Date
2017-09-26 08:01:03
TNS AT
Y
Public
Y
Discovery Mag
16.34
Filter
V-Johnson
Discoverer/s
J. L. Prieto for the ASAS-SN team

Spectra

 AT_2017gwx - 2017-09-28 01:34:31 ESO-NTT / EFOSC2-NTT (ePESSTO)z=
 AT_2017gwx - 2017-09-27 02:22:36 Magellan-Baade / IMACS (ASAS-SN)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),
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
12492017-09-28 01:34:31ESO-NTT / EFOSC2-NTT600S.T. Hodgkin, K. RybickiM. Fraser, E. CallisePESSTO tns_2017gwx_2017-09-28_01-34-31_ESO-NTT_EFOSC2-NTT_ePESSTO.asci tns_2017gwx_2017-09-28_01-34-31_ESO-NTT_EFOSC2-NTT_ePESSTO.fitsObjectePESSTO
12402017-09-27 02:22:36Magellan-Baade / IMACSK. BoutsiaASAS-SN tns_2017gwx_2458023.59903_Magellan-Baade_IMACS_ASAS-SN.txt tns_2017gwx_2458023.59903_Magellan-Baade_IMACS_ASAS-SN.fitsObjectASAS-SN
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-1_Brutus2017-09-21 04:28:41 - 2017-09-26 08:01:033
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
205822017-09-26 08:01:0316.340.07VegaMagV-JohnsonASASSN-1_Brutus
205832017-09-24 08:09:0416.920.13VegaMagV-JohnsonASASSN-1_Brutus
205812017-09-21 04:28:4117.9VegaMagV-JohnsonASASSN-1_Brutus[Last non detection]
G-GaiaGaia_Gaia-photometric2017-05-19 18:14:24 - 2017-10-06 19:10:332
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
210592017-10-06 19:10:3317.630.2ABMagG-GaiaGaia_Gaia-photometric60Robot
210582017-05-19 18:14:2421.5ABMagG-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
140192017-10-10 08:13:06Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts21:55:48.960-17:48:56.882017-10-06 19:10:3317.63G-GaiaPSNGaia17cnyGaiaAlertsconfirmed CV near very faint PanSTARRs source, aka AT2017gwx
137552017-09-26 16:14:11jlprietoJ. L. Prieto for the ASAS-SN teamASAS-SN21:55:48.814-17:48:56.522017-09-26 08:01:0316.34V-JohnsonPSNASASSN-17myASAS-SNSN in faint host or CV. Rising, in 2 epochs.
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
12452017-09-28 15:08:24ePESSTO_Bot1S.T. Hodgkin, K. Rybicki, M. Fraser, E. Callis, O. Yaron, N. Knezevic on behalf of ePESSTOePESSTOCVePESSTO
12362017-09-27 20:15:57jlprietoJ. L. Prieto (UDP), K. Boutsia (LCO), T. Holoien (Carnegie)ASAS-SNCVASAS-SNWe obtained an optical spectrum of ASASSN-17my/AT2017gwx on UT 2017 Sep. 27.1 with IMACS (range 4100-9200 Angs.) mounted on the Magellan Baade 6.5m telescope at LCO. The spectrum shows a blue continuum with H-alpha (double-peaked), He I 5875 and He II 4686 in emission, and H-beta and H-gamma in absorption, all at z=0. This is consistent with a CV in outburst.

Comments

Object coordinates updated according to AT-report 14019 of Group GaiaAlerts
Previous RA, DEC: 21:55:48.814, -17:48:56.52 (328.953392, -17.8157)
Updated RA, DEC: 21:55:48.960, -17:48:56.88 (328.954, -17.8158)