AT 2018dyb
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RA/DEC (2000)
16:10:58.774 -60:55:23.16
242.74489 -60.9231
Type
TDE
Redshift
0.018
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS
Discovery ReportClassification Report
Source Group
ASAS-SN
Discovery Date
2018-07-11 05:31:12
TNS AT
Y
Public
Y
Host Name
WKK 6047
Host Redshift
0.017932
Discovery Mag
16.5
Filter
V-Johnson
Discoverer/s
J. Brimacombe, R. Cornect, K. Z. Stanek, for the ASAS-SN team

Spectra

 ▌AT_2018dyb - 2018-07-17 03:34:00 SOAR / Goodmanz=
▌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
22872018-07-17 03:34:00SOAR / Goodman900Y.-C. PanY.-C. Pan tns_2018dyb_2018-07-17_03-34-00_SOAR_Goodman.flmObject
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-2_Cassius2018-07-02 02:09:36 - 2018-07-11 05:31:122
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
320262018-07-11 05:31:1216.5VegaMagV-JohnsonASASSN-2_Cassius
320252018-07-02 02:09:3617.5VegaMagV-JohnsonASASSN-2_Cassius[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
206642018-07-15 17:12:57KZStanekJ. Brimacombe, R. Cornect, K. Z. Stanek, for the ASAS-SN teamASAS-SN16:10:58.774-60:55:23.162018-07-11 05:31:1216.5V-JohnsonPSNASASSN-18pgASAS-SNIn several epochs, on the rise, low Galactic latitude field
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
22802018-07-17 20:44:16UCSCTr_Bot1Y.-C. Pan, R. J. Foley (UCSC), S. W. Jha (Rutgers), A. Rest (STScI), D. Scolnic (Chicago/KICP)TDE0.018TDE. Blue continuum with several spectral features. We identify some features as likely being He II 4686, H beta, He I 5876, and H alpha in emission. All lines have FWHM of ~12,000 km/s. Using a distance modulus of 34.4 mag to the host galaxy and correcting for MW extinction, the discovery magnitude corresponds to M = -18.5 mag, similar to other TDEs, but more luminous than most SNe II. From the confirmation image, the transient appears coincident with the nucleus of its host galaxy. ATel 11865

Comments

Patrick Vallely (The Ohio State University)

Mon, 07/16/2018 - 14:22

http://www.astronomy.ohio-state.edu/~assassin/followup/asassn-18pg.png