AT 2019tlu
RA/DEC (2000)
22:51:07.411 +53:50:15.04
342.78088 +53.83751
Type
CV
Redshift
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2019-10-27 05:16:48.000
TNS AT
Y
Public
Y
Discovery Mag
15.4
Filter
g-Sloan
Reporter/s
K. Z. Stanek, for the ASAS-SN team

Spectra

 AT_2019tlu - 2019-10-27 21:36:00 Ekar / AFOSC (Padova-Asiago)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
53912019-10-27 21:36:00Ekar / AFOSC1200TomasellaTomasellaPadova-Asiago tns_2019tlu_2458784.40_Ekar_AFOSC_Padova-Asiago.dat tns_2019tlu_2458784.40_Ekar_AFOSC_Padova-Asiago.fitsObjectPadova-Asiago
Light Curves
FilterTel / InstObs-date rangePhotometry
g-SloanASASSN-1_Brutus2019-10-24 07:40:48 - 2019-10-24 07:40:481
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
983062019-10-24 07:40:4818.5ABMagg-SloanASASSN-1_Brutus[Last non detection]
g-SloanASASSN-4_Leavitt2019-10-27 05:16:48 - 2019-10-27 05:16:481
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
983072019-10-27 05:16:4815.4ABMagg-SloanASASSN-4_Leavitt
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
509062019-10-27 20:59:58KZStanekK. Z. Stanek, for the ASAS-SN teamASAS-SNASAS-SN22:51:07.411+53:50:15.042019-10-27 05:16:48.00015.4g-SloanPNVASASSN-19zyASAS-SNPresent in two epochs, on the rise, in TESS, no Vizier match, near the Galactic plane, so might be a classical Nova or a CV
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
53822019-10-28 11:22:32linatomaL. Tomasella, S. Benetti, E. Cappellaro, M. Turatto (INAF Osservatorio Astronomico di Padova)Padova-AsiagoCVPadova-AsiagoThe spectrum shows a blue continuum with narrow Halpha, Hbeta and Hgamma in emission at the rest wavelength. The transient is therefore a cataclysmic variable (CV). The Balmer decrement from the emission components, with the presence of a fairly strong Halpha and higher members of the series showing progressively stronger absorptions, confirms the classification as a dwarf nova. Also the He I emission at 587.6 nm is clearly visible2019TNSCR2214....1T