2021dxi | Transient Name Server

RA/DEC (2000)

17:12:18.313 +13:25:39.36

258.0763051 +13.4275987

Type

Redshift

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2021-02-24 11:11:02.400

TNS AT

Public

Discovery Mag

18.35

Filter

g-ZTF

Reporter/s

C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

P48_ZTF-Cam_g

▌

ATLAS-MLO_ATLAS-01_orange

▌

ATLAS-MLO_ATLAS-01_cyan

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
	9095	2021-03-03 04:24:24	LT / SPRAT	600	LT Robot	LT pipeline and Ismael Pérez-Fournon	SGLF	tns_2021dxi_2021-03-03_04-24-24_LT_SPRAT_SGLF.txt		Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), ▌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

g-ZTF

P48_ZTF-Cam

2021-02-22 12:40:19 - 2021-02-26 12:11:31

2459268.028 - 2459272.008

Photometry

ID	Obs-date	JD	Mag. / Flux	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
195005	2021-02-26 12:11:31	2459272.008	13.31		ABMag	g-ZTF	P48_ZTF-Cam	30	ZTF
195004	2021-02-24 11:11:02	2459269.966	18.35		ABMag	g-ZTF	P48_ZTF-Cam	30	ZTF
195003	2021-02-22 12:40:19	2459268.028		20.31	ABMag	g-ZTF	P48_ZTF-Cam	30	ZTF	[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2021-02-24 13:17:46 - 2021-02-24 13:17:46

2459270.054 - 2459270.054

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
195023	2021-02-24 13:17:46	2459270.054	17.338	0.058	18.76	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

cyan-ATLAS

ATLAS-MLO_ATLAS-01

2021-02-16 14:48:29 - 2021-02-16 14:48:29

2459262.117 - 2459262.117

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
195022	2021-02-16 14:48:29	2459262.117			19.79	ABMag	cyan-ATLAS	ATLAS-MLO_ATLAS-01	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
100639	2021-02-28 13:38:01	ATLAS_Bot1	J. Tonry, L. Denneau, A. Heinze et al.	ATLAS	ATLAS	17:12:18.316	+13:25:39.50	2021-02-24 13:17:45.600	17.338	orange-ATLAS		PSN		ATLAS21gxx	ATLAS				N
100623	2021-02-28 09:59:23	ZTF_Bot1	C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration	ZTF	ZTF	17:12:18.313	+13:25:39.36	2021-02-24 11:11:02.400	18.35	g-ZTF		PSN		ZTF21aanehlz	ZTF			2021TNSTR.630....1F	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

9085

2021-03-04 10:42:12

Ismael Perez-Fournon

I. Perez-Fournon, C. Jimenez Angel, F. Poidevin (IAC & ULL), R. Shirley (Univ. of Southampton), R. Marques-Chaves (Univ. of Geneva), S. Geier (GRANTECAN & IAC), Y. Shu (MPA), S. Rodney, J. Roberts-Pierel (Univ. of South Carolina), A. Bolton (NSF's NOIRLab), S. Chakrabarti, P. Craig, and B. Alamiri (RIT)

SGLF

AT 2021dxi (ZTF21aanehlz, ATLAS21gxx) has been recently reported to TNS by ZTF and ATLAS as a possible supernova. However, the 5 mag brightening (in ZTF g-band) in two days and the association with a faint, blue, point-like source in the DESI Legacy Imaging Surveys (with magnitudes g=21.24, r=20.97, z=21.6) suggested that it is a bright CV as confirmed by our LT SPRAT spectroscopy. The brightest ZTF observed magnitudes are g = 13.308 +/- 0.024 on 2021-02-26 12:11:19 and r = 13.584 +/- 0.017 on 2021-02-26 11:44:54. After correction for galactic extinction, Ag = 0.534 and Ar = 0.369, the corrected brightest magnitudes are g = 12.774 and r = 13.215. 2020dxi is one of the brightest CVs discovered by ZTF. Photometric data were provided by the Zwicky Transient Facility (https://www.ztf.caltech.edu) and processed through the Lasair (https://lasair.roe.ac.uk), ALeRCE (https://alerce.online), ANTARES (https://antares.noirlab.edu), Fink (https://fink-broker.org), and MARS (https://mars.lco.global) brokers and by the Asteroid Terrestrial-impact Last Alert System (ATLAS, Tonry et al. 2018).

2021TNSCR.683....1P

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
9095	2021-03-03 04:24:24	LT / SPRAT	600	LT Robot	LT pipeline and Ismael Pérez-Fournon	SGLF	tns_2021dxi_2021-03-03_04-24-24_LT_SPRAT_SGLF.txt		Object

AT 2021dxi

Spectra

Light curves

Comments