2019sgf | Transient Name Server

RA/DEC (2000)

06:18:01.440 +22:22:28.70

94.506 +22.374639

Type

CV

Redshift

Discovery Report Classification Report

Reporting Group

ASAS-SN

Discovering Data Source

ASAS-SN

Discovery Date

2019-10-07 13:12:00.000

TNS AT

Y

Public

Y

Discovery Mag

15.7

Filter

g-Sloan

Reporter/s

K. Z. Stanek, C. S. Kochanek, for the ASAS-SN team

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

Gaia_Gaia-photometric_G

▌

ASASSN-1_Brutus_g

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
	5294	2019-10-10 09:31:56	MDM-2.4 / BC-OSU		Rupert		None	tns_2019sgf_2019-10-10_09-31-56_MDM-2.4_BC-OSU.txt		Object			The spectrum is dominated by Balmer and He I lines. Halpha and Hbeta show a narrow emission on top of an absorption, typical for a dwarf nova outburst. We also identify He II 4686 in emission which indicates that the progenitor system might be a magnetic CV, consistent with the conclusions from ATels 13176 and 13190.
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 The spectrum is dominated by Balmer and He I lines. Halpha and Hbeta show a narrow emission on top of an absorption, typical for a dwarf nova outburst. We also identify He II 4686 in emission which indicates that the progenitor system might be a magnetic CV, consistent with the conclusions from ATels 13176 and 13190.

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

G-Gaia

Gaia_Gaia-photometric

2021-10-17 20:39:50 - 2022-03-24 09:15:50

2459505.361 - 2459662.886

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
273498	2022-03-24 09:15:50	2459662.886	15.21	0.2		ABMag	G-Gaia	Gaia_Gaia-photometric	60	Robot
273497	2021-10-17 20:39:50	2459505.361			21.5	ABMag	G-Gaia	Gaia_Gaia-photometric		Robot	[Last non detection]

g-Sloan

ASASSN-1_Brutus

2019-10-05 13:12:00 - 2019-10-07 13:12:00

2458762.05 - 2458764.05

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
93998	2019-10-07 13:12:00	2458764.05	15.7			ABMag	g-Sloan	ASASSN-1_Brutus
93997	2019-10-05 13:12:00	2458762.05			18.3	ABMag	g-Sloan	ASASSN-1_Brutus			[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
142932	2022-04-02 09:52:27	Gaia_Bot1	S.T. Hodgkin,E. Breedt,A. Delgado et al.	GaiaAlerts	GaiaAlerts	06:18:01.440	+22:22:28.70	2022-03-24 09:15:50.400	15.21	G-Gaia		Other		Gaia22bgi	GaiaAlerts		outburst of confirmed CV ASASSN-19yt. Spectrum on TNS.		N
49001	2019-10-08 15:28:09	Krzysztof Stanek	K. Z. Stanek,C. S. Kochanek,for the ASAS-SN team et al.	ASAS-SN	ASAS-SN	06:18:01.452	+22:22:29.06	2019-10-07 13:12:00.000	15.7	g-Sloan		PNV		ASASSN-19yt	ASAS-SN		Present in several epochs, a bright transient on the rise, near the Galactic plane, so could be a Nova or a CV	2019TNSTR2029....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

5286

2019-10-15 15:48:30

Adam Kawash

Adam Kawash

None

CV

1

1

Spectrum is that of a dwarf nova in outburst and suggests the progenitor system be a magnetic CV, consistent with the conclusions from ATels 13176 and 13190.

2019TNSCR2086....1K

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2019sgf_classrep_5286.png	not flux calibrated	2019-10-15 15:48:30	Adam Kawash

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
5294	2019-10-10 09:31:56	MDM-2.4 / BC-OSU		Rupert		None	tns_2019sgf_2019-10-10_09-31-56_MDM-2.4_BC-OSU.txt		Object			The spectrum is dominated by Balmer and He I lines. Halpha and Hbeta show a narrow emission on top of an absorption, typical for a dwarf nova outburst. We also identify He II 4686 in emission which indicates that the progenitor system might be a magnetic CV, consistent with the conclusions from ATels 13176 and 13190.

Comments

Object coordinates updated

Object coordinates updated according to AT-report 142932 of Group GaiaAlerts
Previous RA, DEC: 06:18:01.452, +22:22:29.06 (94.50605, +22.37474)
Updated RA, DEC: 06:18:01.440, +22:22:28.70 (94.506, 22.374639)

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