RA/DEC (2000)
14:55:06.082 +46:43:45.32
223.775343093 +46.7292543462
Type
SN II
Redshift
0.026
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2024-04-12 08:43:18.002
TNS AT
Y
Public
Y
Host Name
SDSS J145506.53+464350.9
Host Redshift
0.02614445
Discovery Mag
18.2584
Filter
g-ZTF
Reporter/s
A. Munoz-Arancibia, F. Forster, F.E. Bauer, G. Pignata, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Gallardo, P. Huijse, H. Larranaga, E. Pizarro, I. Reyes, P. Sanchez-Saez, A. Sepulveda, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2024gke - 2024-04-20 11:05:35 P60 / SEDM (ZTF)z=
 ▌SN_2024gke - 2024-04-13 01:46:45 CA-2.2m / CAFOS (None)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌PS2_GPC2_i
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
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
17011 2024-04-20 11:05:35 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2024gke_2024-04-20_11-05-35.433069_P60_SEDM_ZTF.ascii Object
16971 2024-04-13 01:46:45 CA-2.2m / CAFOS 2200 N. Blagorodnova; G. Garcia Moreno; J. M. González; G. Katusiime; J. Mansilla; A. Rojo; Guijarro; Y. Calatayud; S. Gongora; D. D Hugo Tranin; N. Blagorodnova None tns_2024gke_2024-04-13_01-46-45_CA-2.2m_CAFOS.txt Object The spectrum shows common characteristics of young hydrogen-rich supernovae at early times: a blue continuum and a broad H alpha P-Cygni profile. From the minimum of the H alpha absorption, we estimate an expansion velocity of ~14,000 km/s.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
i-P1 PS2_GPC2 2024-04-19 11:56:13 - 2024-04-19 11:56:13 2460419.99737 - 2460419.99737 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
401852 2024-04-19 11:56:13 2460419.99737 17.93 0.03 20.7 ABMag i-P1 PS2_GPC2 45 Robot
g-ZTF P48_ZTF-Cam 2024-04-04 10:30:29 - 2024-04-12 08:43:18 2460404.9378356 - 2460412.8634028 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
400736 2024-04-12 08:43:18 2460412.8634028 18.2584 0.0624403 20.8074 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
400735 2024-04-04 10:30:29 2460404.9378356 20.8215 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
orange-ATLAS ATLAS-MLO_ATLAS-01 2024-04-14 11:58:36 - 2024-04-17 10:34:34 2460414.99903 - 2460417.94067 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
401387 2024-04-17 10:34:34 2460417.94067 17.912 0.11 18.86 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
401386 2024-04-14 11:58:36 2460414.99903 15.89 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 110 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
208116 2024-04-20 09:31:40 PS1_Bot1 K. C. Chambers, T. de Boer, J. Herman et al. Pan-STARRS Pan-STARRS 14:55:06.082 +46:43:45.32 2024-04-19 11:56:12.768 17.93 i-P1 PSN PS24bue Pan-STARRS N
207866 2024-04-17 14:22:49 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 14:55:06.072 +46:43:45.19 2024-04-17 10:34:33.888 17.912 orange-ATLAS PSN ATLAS24fwe ATLAS N
207544 2024-04-12 13:50:35 ALeRCE A. Munoz-Arancibia, F. Forster, F.E. Bauer et al. ALeRCE ZTF 14:55:06.083 +46:43:45.42 2024-04-12 08:43:18.002 18.2584 g-ZTF PSN SDSS J145506.53+464350.9 ZTF24aajhotx ALeRCE Early SN candidate (g-rise > 0.32+-0.01 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF24aajhotx 2024TNSTR1034....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
16924 2024-04-20 15:11:04 ZTF_Bot1 J. Sollerman, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN II 0.026 1 ZTF 2024TNSCR1156....1S
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
17011 2024-04-20 11:05:35 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2024gke_2024-04-20_11-05-35.433069_P60_SEDM_ZTF.ascii Object
16884 2024-04-13 23:20:19 Nadejda Blagorodnova Mujortova N. Blagorodnova; G. Garcia Moreno; J. M. González; G. Katusiime; J. Mansilla; A. Rojo; Guijarro; Y. Calatayud; S. Gongora; D. Del Ser; O. Fors; M. Ardèvol; J. Donada; V. Fernandez; J. Garcia Cardoso; B. Gilabert; A. Girón; E. Gombau; M. Gort; A. Moreso; A. Moron; A. Puigdevall; T. Zhang (Universitat de Barcelona) None SN II 0.026144 1 We report the classification for AT2024gke as a SN II. The transient was discovered by ZTF with the internal name of ZTF24aajhotx, and was reported to TNS by ALErCE as an early SN candidate with a rise time in g-band of > 0.32+-0.01 mag/day. The object is located in the galaxy SDSS J145506.53+464350.9 with redshift of z=0.026144 (NED). Within the training program Calar Alto Academy UB, we obtained a classification spectrum of AT2024gke on the night of 12th of April 2024 (MJD 60413.074) with the low-resolution spectrograph CAFOS (Calar Alto Faint Object Spectrograph), mounted on the CAHA 2.2m telescope. The used grism G-200 offers a resolution of 400 - 500 km/s. The data was reduced using a custom-developed Python pipeline. The flux was calibrated using a standard star at airmass 3.5 (BD+33 2642), while the science target was obtained at airmass 1, resulting in an excessive correction in the blue wavelengths. Based on observations collected at the Centro Astronómico Hispano en Andalucía (CAHA) at Calar Alto, operated jointly by Junta de Andalucía and Consejo Superior de Investigaciones Científicas (IAA-CSIC). 2024TNSCR1054....1B
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
16971 2024-04-13 01:46:45 CA-2.2m / CAFOS 2200 N. Blagorodnova; G. Garcia Moreno; J. M. González; G. Katusiime; J. Mansilla; A. Rojo; Guijarro; Y. Calatayud; S. Gongora; D. D Hugo Tranin; N. Blagorodnova None tns_2024gke_2024-04-13_01-46-45_CA-2.2m_CAFOS.txt Object The spectrum shows common characteristics of young hydrogen-rich supernovae at early times: a blue continuum and a broad H alpha P-Cygni profile. From the minimum of the H alpha absorption, we estimate an expansion velocity of ~14,000 km/s.

Comments

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 208116 of Group Pan-STARRS
Previous RA, DEC: 14:55:06.083, +46:43:45.42 (223.77534530000003, +46.7292828)
Updated RA, DEC: 14:55:06.082, +46:43:45.32 (223.775343093, 46.7292543462)