2020vdm | Transient Name Server

RA/DEC (2000)

05:00:11.860 +06:03:17.17

75.049417 +6.054769

Type

SN Ia

Redshift

0.06

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2020-10-08 09:35:24.576

TNS AT

Y

Public

Y

Discovery Mag

18.46

Filter

g-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

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	Assoc. Groups	End prop. period	Remarks
	7667	2020-10-14 06:46:40	P60 / SEDM	1800	SEDmRobot	auto	ZTF	tns_2020vdm_2020-10-14_06-46-40_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
	7638	2020-10-09 13:38:30	UH88 / SNIFS	1800	M E Huber		SCAT	tns_2020vdm_2459132.0684_UH88_SNIFS_SCAT.dat		Object			Reduced with a summit-based quick-reduction pipeline, only blue channel available
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 Reduced with a summit-based quick-reduction pipeline, only blue channel available

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

i-P1

PS2_GPC2

2020-10-04 12:21:36 - 2020-10-04 12:21:36

2459127.015 - 2459127.015

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
163778	2020-10-04 12:21:36	2459127.015	19.46	0.3	20.7	ABMag	i-P1	PS2_GPC2	45	Robot

r-ZTF

P48_ZTF-Cam

2020-10-08 10:36:15 - 2020-10-08 10:36:15

2459130.9418403 - 2459130.9418403

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
162456	2020-10-08 10:36:15	2459130.9418403	18.69	0.08	20.16	ABMag	r-ZTF	P48_ZTF-Cam	30

g-ZTF

P48_ZTF-Cam

2020-10-03 10:25:17 - 2020-10-08 09:35:25

2459125.9342245 - 2459130.8995949

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
162455	2020-10-08 09:35:25	2459130.8995949	18.46	0.07	19.86	ABMag	g-ZTF	P48_ZTF-Cam	30
162454	2020-10-03 10:25:17	2459125.9342245			19.5152	ABMag	g-ZTF	P48_ZTF-Cam	30		[Last non detection]

G-Gaia

Gaia_Gaia-photometric

2020-09-10 13:59:31 - 2020-10-06 13:55:12

2459103.083 - 2459129.08

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
162852	2020-10-06 13:55:12	2459129.08	18.91	0.2		ABMag	G-Gaia	Gaia_Gaia-photometric	60	Robot
162851	2020-09-10 13:59:31	2459103.083			21.5	ABMag	G-Gaia	Gaia_Gaia-photometric		Robot	[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2020-10-04 12:23:02 - 2020-10-08 12:36:00

2459127.016 - 2459131.025

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
164070	2020-10-08 12:36:00	2459131.025	18.7	0.137	19.12	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot
164069	2020-10-04 12:23:02	2459127.016			18.75	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot	[Last non detection]

AT Reports

ID	Time received (UT)	Sender	Reporter/s	Reporting group	Disc. Data Source	RA	DEC	Discovery date (UT)	Discovery Mag.	Filter	Related files	AT Type	Host name	Internal name	Assoc. Groups	End prop. period	Remarks	ADS Bibcode	Unreal	Auto classification
85260	2020-10-12 22:53:14	ATLAS_Bot1	J. Tonry, L. Denneau, A. Heinze et al.	ATLAS	ATLAS	05:00:11.856	+06:03:17.26	2020-10-08 12:36:00.000	18.7	orange-ATLAS		PSN		ATLAS20bcvp	ATLAS				N
85104	2020-10-12 16:23:54	PS2_Bot1	K. C. Chambers, T. de Boer, J. Bulger et al.	Pan-STARRS	Pan-STARRS	05:00:11.861	+06:03:17.16	2020-10-04 12:21:36.000	19.46	i-P1		PSN		PS20itd	Pan-STARRS				N
84460	2020-10-09 10:15:11	Gaia_Bot1	S.T. Hodgkin, E. Breedt, A. Delgado et al.	GaiaAlerts	GaiaAlerts	05:00:11.860	+06:03:17.17	2020-10-06 13:55:12.000	18.91	G-Gaia		PSN		Gaia20ert	GaiaAlerts		apparently hostless transient		N
84299	2020-10-08 11:42:35	ZTF_AMPEL_COMPLETE	J. Nordin, V. Brinnel, M. Giomi et al.	ZTF	ZTF	05:00:11.864	+06:03:17.14	2020-10-08 09:35:24.576	18.46	g-ZTF		PSN		ZTF20acgnzhj	ZTF		See arXiv:1904.05922 for selection criteria.	2020TNSTR3060....1N	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

7654

2020-10-14 17:42:23

ZTF_Bot1

A. Dahiwale, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN Ia

0.06

1

ZTF

2020TNSCR3122....1D

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
7667	2020-10-14 06:46:40	P60 / SEDM	1800	SEDmRobot	auto	ZTF	tns_2020vdm_2020-10-14_06-46-40_P60_SEDM_ZTF.ascii		Object

7625

2020-10-10 01:47:50

Michael Tucker

M A Tucker (IfA, UH Manoa) on behalf of the SCAT team

SCAT

SN Ia

0.06

1

SCAT

Likely a normal Type Ia SN a few days before maximum light. A few post-maximum SN Ib-norm templates also produce acceptable fits to the spectrum but lack a prominent absorption feature at ~5000A so we consider the pre-maximum SN Ia-norm classification more likely. Redshift, SN type, and age estimated via template cross-correlation with SNID (Blondin and Tonry 2007).

2020TNSCR3079....1T

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
7638	2020-10-09 13:38:30	UH88 / SNIFS	1800	M E Huber		SCAT	tns_2020vdm_2459132.0684_UH88_SNIFS_SCAT.dat		Object			Reduced with a summit-based quick-reduction pipeline, only blue channel available

Comments

Object coordinates updated

Object coordinates updated according to AT-report 84460 of Group GaiaAlerts
Previous RA, DEC: 05:00:11.864, +06:03:17.14 (75.04943465, +6.0547604)
Updated RA, DEC: 05:00:11.860, +06:03:17.17 (75.049417, 6.054769)

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