2024cew | Transient Name Server

RA/DEC (2000)

17:01:05.291 +68:43:46.30

255.272044 +68.729529

Type

SN Ia-pec

Redshift

0.15

Discovery Report Classification Report

Related AstroNotes: 2024-52

Reporting Group

GOTO

Discovering Data Source

GOTO

Discovery Date

2024-02-11 05:27:37.728

TNS AT

Public

Discovery Mag

19.65

Filter

L-GOTO

Reporter/s

S. Belkin, B. Gompertz, K. Ackley, M. Dyer, F. Jiménez-Ibarra, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, L. Nuttall, E. Pallé, D. Pollacco, T. Killestein, A. Kumar, D. O'Neill, on behalf of GOTO collaboration

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

GOTO-N_GOTO-1_L

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
	16660	2024-02-14 05:10:45	INT-2.5m / IDS		B. Godson, M. Pursiainen, B. Warwick, M. J. Dyer, M. Mitchell		GOTO	tns_2024cew_2460354.7158016_INT-2.5m_IDS_GOTO.txt		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-1

2023-06-22 01:20:08 - 2024-02-11 05:27:38

2460117.555651 - 2460351.727525

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
389794	2024-02-11 05:27:38	2460351.727525	19.65	0.14		ABMag	L-GOTO	GOTO-N_GOTO-1	360
389793	2023-06-22 01:20:08	2460117.555651			20.4	ABMag	L-GOTO	GOTO-N_GOTO-1	360		[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
201936	2024-02-11 21:35:21	GOTO_bot	S. Belkin, B. Gompertz, K. Ackley et al.	GOTO	GOTO	17:01:05.291	+68:43:46.30	2024-02-11 05:27:37.728	19.65	L-GOTO		Other		GOTO24pw	GOTO			2024TNSTR.395....1B	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

16573

2024-02-14 22:00:11

Miika Pursiainen

B. Godson, M. Pursiainen, B. Warwick, M. J. Dyer, M. Mitchell, D. O'Neill, J. Lyman, T. Killestein, A. Sahu, A. Kumar, D. Coppejans, G. Ramsay, R. Kotak, B.Gompertz, K. Ackley, K. Ulaczyk, F. Jiminez-Ibarra, D. Steeghs, D. K. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. P. Breton, L. K. Nuttall, E. Pall'e, D. Pollacco on behalf of GOTO

GOTO

SN Ia-pec

0.15

GOTO

The transient is consistent with a Type Ia SN at a redshift of z=0.15 as classified using SNID. we also find additional matches to 91T-like SN, which is consistent with the high luminosity implied by the redshift. We classify the event as Ia-pec as the first three GOTO detections appear to suggest a very fast decline rate, before levelling out. Spectroscopic follow-up is recommended.

2024TNSCR.449....1G

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
16660	2024-02-14 05:10:45	INT-2.5m / IDS		B. Godson, M. Pursiainen, B. Warwick, M. J. Dyer, M. Mitchell		GOTO	tns_2024cew_2460354.7158016_INT-2.5m_IDS_GOTO.txt		Object

SN 2024cew

Spectra

Light curves

Comments