2024zau | Transient Name Server

RA/DEC (2000)

06:47:16.376 +41:57:55.09

101.818234933 +41.9653019556

Type

TDE

Redshift

0.0815

Discovery Report Classification Report

Related AstroNotes: 2024-317, 2024-328

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2024-10-12 10:50:09.003

TNS AT

Y

Public

Y

Comments

[Prefix updated to TDE by admin on 2025-01-26]

Discovery Mag

20.9604

Filter

g-ZTF

Reporter/s

Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) 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
	18710	2024-11-10 02:35:54	NOT / ALFOSC	1800	A. Casasbuenas	Panos Charalampopoulos	None	tns_2024zau_2024-11-10_02-35-54.064_NOT_ALFOSC.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

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

L-GOTO

GOTO-N_GOTO-2

2024-10-29 01:52:12 - 2024-10-29 01:52:12

2460612.57792 - 2460612.57792

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
451048	2024-10-29 01:52:12	2460612.57792			19.5	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

L-GOTO

GOTO-N_GOTO-1

2024-10-31 01:44:34 - 2024-10-31 01:44:34

2460614.572608 - 2460614.572608

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
451049	2024-10-31 01:44:34	2460614.572608	19.31	0.17		ABMag	L-GOTO	GOTO-N_GOTO-1	180

r-ZTF

P48_ZTF-Cam

2024-10-12 09:21:02 - 2024-10-12 09:21:02

2460595.8896065 - 2460595.8896065

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
441882	2024-10-12 09:21:02	2460595.8896065			20.3951	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2024-10-12 10:50:09 - 2024-10-24 10:14:46

2460595.9514931 - 2460607.9269213

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
441884	2024-10-24 10:14:46	2460607.9269213	19.5653	0.175523		ABMag	g-ZTF	P48_ZTF-Cam
441883	2024-10-12 10:50:09	2460595.9514931	20.9604	0.312914		ABMag	g-ZTF	P48_ZTF-Cam

cyan-ATLAS

ATLAS-MLO_ATLAS-01

2024-10-30 12:56:32 - 2024-10-30 12:56:32

2460614.03926 - 2460614.03926

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
445706	2024-10-30 12:56:32	2460614.03926			19.25	ABMag	cyan-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2024-11-09 10:48:17 - 2024-11-09 10:48:17

2460623.9502 - 2460623.9502

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
445707	2024-11-09 10:48:17	2460623.9502	19.159	0.187	19.29	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot

w-P1

PS1_GPC1

2024-11-12 13:42:49 - 2024-11-12 13:42:49

2460627.0714 - 2460627.0714

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
460474	2024-11-12 13:42:49	2460627.0714	19.11	0.04	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	Related files	AT Type	Host name	Internal name	Assoc. Groups	End prop. period	Remarks	ADS Bibcode	Unreal	Auto classification
240246	2025-01-02 22:23:07	PS1_Bot1	K. C. Chambers,T. de Boer,J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	06:47:16.376	+41:57:55.09	2024-11-12 13:42:48.960	19.11	w-P1		PSN		PS24oef	Pan-STARRS				N
235049	2024-12-05 08:06:02	GOTO_bot	D. O'Neill,G. Ramsay,K. Ackley et al.	GOTO	GOTO	06:47:16.355	+41:57:55.08	2024-10-31 01:44:33.504	19.31	L-GOTO		Other		GOTO24isw	GOTO				N
232161	2024-11-10 09:18:04	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	06:47:16.364	+41:57:55.88	2024-11-09 10:48:17.280	19.159	orange-ATLAS		PSN		ATLAS24qbw	ATLAS				N
230230	2024-10-24 11:03:33	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	06:47:16.365	+41:57:55.38	2024-10-12 10:50:09.003	20.9604	g-ZTF		PSN		ZTF24abmzcpa	ZTF			2024TNSTR4135....1S	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

18615

2024-11-10 10:45:07

Panos Charalampopoulos

Panos Charalampopoulos

None

TDE

0.0815

1

2

We report the classification of AT2024zau as a Tidal Disruption Event (TDE) based on an optical spectrum obtained with the Nordic Optical Telescope on 2024-11-09 (i.e., MJD 60624.10). The host is faint and there is no strong evident nucleus, however the transient appears central. At a redshift of 0.0815, we tentatively identify CaII H&K and NaI D. We detect broad Halpha, and a blend of broad Hbeta and a narrower peak around HeII 4686. Comparison with a library of supernovae spectra using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), suggests AT2024zau is an around peak TDE (see attached images). We note that there is significant MW extinction (Av=0.37) which would make the g-r constant colour evolution to be around -0.3. At that redshift, and correcting for the MW extinction, the current absolute g-band magnitude is Mg ~ -19.25.

2024TNSCR4427....1C

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2024zau_classrep_18615.png	Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).	2024-11-10 10:45:07	Panos Charalampopoulos
tns_2024zau_classrep_18615_0.png	Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).	2024-11-10 10:45:07	Panos Charalampopoulos

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
18710	2024-11-10 02:35:54	NOT / ALFOSC	1800	A. Casasbuenas	Panos Charalampopoulos	None	tns_2024zau_2024-11-10_02-35-54.064_NOT_ALFOSC.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 240246 of Group Pan-STARRS
Previous RA, DEC: 06:47:16.365, +41:57:55.38 (101.8181874, +41.9653821)
Updated RA, DEC: 06:47:16.376, +41:57:55.09 (101.818234933, 41.9653019556)

Log in or register to post comments

Log in or register to post comments