2019dks | Transient Name Server

RA/DEC (2000)

11:44:05.602 -04:40:25.21

176.023340622 -4.67366886865

Type

SN Ia-91T-like

Redshift

0.057

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2019-04-10 06:04:39.000

TNS AT

Public

Discovery Mag

18.71

Filter

r-ZTF

Reporter/s

J. Nordin, V. Brinnel, M. Giomi, J. van Santen (HU Berlin), A. Gal-Yam, O. Yaron, S. Schulze (Weizmann) on behalf of ZTF

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

P48_ZTF-Cam_r

▌

ATLAS-MLO_ATLAS-01_orange

▌

PS1_GPC1_w

Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)

Spectra

Select	ID	Obs-date (UT)	Tel / Inst	Exp-Time	Observer/s	Reducer/s	Group	Spectrum ascii file	Spectrum fits file	Spec. Type
	3963	2019-04-20 21:31:39	P60 / SEDM	2250	SEDmRobot	auto	ZTF	tns_2019dks_2019-04-20_21-31-39_P60_SEDM_ZTF.ascii		Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), 0 (observed) ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks
	3912	2019-04-19 08:48:50	FTN / FLOYDS-N	3600	Las Cumbres Observatory	Jamison Burke	Global SN Project	tns_2019dks_2019-04-19_08-48-50_FTN_FLOYDS-N_Global_SN_Project.ascii	tns_2019dks_2019-04-19_08-48-50_FTN_FLOYDS-N_Global_SN_Project.fits	Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), 0 (observed) ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

r-ZTF

P48_ZTF-Cam

2019-04-07 06:36:50 - 2019-04-13 05:31:44

2458580.7755903 - 2458586.7303819

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Remarks
61397	2019-04-13 05:31:44	2458586.7303819	18.71	0.08	20.1	ABMag	r-ZTF	P48_ZTF-Cam	30
61398	2019-04-10 06:04:39	2458583.7532292	19.76	0.19	20.04	ABMag	r-ZTF	P48_ZTF-Cam	30
61396	2019-04-07 06:36:50	2458580.7755903			20.4323	ABMag	r-ZTF	P48_ZTF-Cam	30	[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2019-04-11 10:33:36 - 2019-04-15 09:56:09

2458584.94 - 2458588.9139931

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
61756	2019-04-15 09:56:09	2458588.9139931	18.165	0.139	18.56	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot
61755	2019-04-11 10:33:36	2458584.94			18.65	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

w-P1

PS1_GPC1

2019-05-04 06:15:50 - 2019-05-04 06:15:50

2458607.7609954 - 2458607.7609954

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
75030	2019-05-04 06:15:50	2458607.7609954	17.84	0.02	22	ABMag	w-P1	PS1_GPC1	45	Robot

AT Reports

ID	Time received (UT)	Sender	Reporter/s	Reporting group	Disc. Data Source	RA	DEC	Discovery date (UT)	Discovery Mag.	Filter	AT Type	Internal name	Assoc. Groups	ADS Bibcode	Unreal
39693	2019-06-30 21:36:18	PS1_Bot1	K. C. Chambers,T. de Boer,J. Bulger et al.	Pan-STARRS	Pan-STARRS	11:44:05.602	-04:40:25.21	2019-05-04 06:15:50.000	17.84	w-P1	PSN	PS19cmn	Pan-STARRS		N
33145	2019-04-15 13:19:43	ATLAS_Bot1	J. Tonry,L. Denneau,A. Heinze et al.	ATLAS	ATLAS	11:44:05.599	-04:40:25.47	2019-04-15 09:56:09.000	18.165	orange-ATLAS	PSN	ATLAS19hhz	ATLAS		N
33008	2019-04-13 13:19:55	ZTF_AMPEL_NEW	J. Nordin,V. Brinnel,M. Giomi et al.	ZTF	ZTF	11:44:05.600	-04:40:25.24	2019-04-10 06:04:39.000	18.71	r-ZTF	PSN	ZTF19aaprzcr	ZTF	2019TNSTR.566....1N	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

3956

2019-05-01 01:04:24

ZTF_Bot1

C. Fremling, A. Dugas (Caltech), Y. Sharma (IIT Bombay) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN Ia-91T-like

0.057

ZTF

2019TNSCR2799....1F

Spectra

ID	Obs-date (UT)	Tel / Inst	Exp-Time	Observer/s	Reducer/s	Group	Spectrum ascii file	Spectrum fits file	Spec. Type	Assoc. Groups	End prop. period	Remarks
3963	2019-04-20 21:31:39	P60 / SEDM	2250	SEDmRobot	auto	ZTF	tns_2019dks_2019-04-20_21-31-39_P60_SEDM_ZTF.ascii		Object

3905

2019-04-19 22:13:17

Jamison Burke

Jamison Burke, Iair Arcavi, D. Andrew Howell, Daichi Hiramatsu, Curtis McCully, Stefano Valenti

Global SN Project

SN Ia-91T-like

0.057

Global SN Project

Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find good fits to several 91T-like Type Ia supernovae a few days to a week before maximum. The best-fit redshift from both SNID and Superfit is 0.057. Verification of this redshift is difficult, as the faint host (GALEXASC J114405.72-044028.8) can be seen in archival PanSTARRS images, but does not have a redshift listed in NED. There are also no obvious host spectral lines to measure the redshift. Assuming this redshift, we measure a Si II velocity of about 12,000 km/s and a Ca II velocity of about 13,000 km/s. We measure a B-band absolute magnitude of -19.5 and rising at a similar epoch as the spectrum. The object’s absolute magnitude and dwarf galaxy host indicate that it could be a super-Chandrasekhar event.

2019TNSCR.601....1B

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2019dks_classrep_3905_Global_SN_Project.ps		2019-04-19 22:13:17	Jamison Burke
tns_2019dks_classrep_3905_Global_SN_Project_0.ps		2019-04-19 22:13:17	Jamison Burke

Spectra

ID	Obs-date (UT)	Tel / Inst	Exp-Time	Observer/s	Reducer/s	Group	Spectrum ascii file	Spectrum fits file	Spec. Type	Assoc. Groups	End prop. period	Remarks
3912	2019-04-19 08:48:50	FTN / FLOYDS-N	3600	Las Cumbres Observatory	Jamison Burke	Global SN Project	tns_2019dks_2019-04-19_08-48-50_FTN_FLOYDS-N_Global_SN_Project.ascii	tns_2019dks_2019-04-19_08-48-50_FTN_FLOYDS-N_Global_SN_Project.fits	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 39693 of Group Pan-STARRS1
Previous RA, DEC: 11:44:05.600, -04:40:25.24 (176.0233321, -4.6736766)
Updated RA, DEC: 11:44:05.602, -04:40:25.21 (176.023340622, -4.67366886865)

SN 2019dks

Spectra

Light curves

Comments

Object coordinates updated