2026atb results

2026atb results

Information

Transient

Name:	`SN2026atb`
Right ascension:	`14h34m27.30s`
Declination:	`21d56m58.85s`
Discovery Date:	`Jan. 19, 2026, 11:49 a.m.`
Classification:	`SN Ia`
Redshift:	`0.017941`
MW E(B-V):	`0.046`

Host

Name:
Right ascension:	`14h34m28.51s`
Declination:	`21d56m56.52s`
Redshift:	`0.017941`
Photometric Redshift:	`None`

Cutout Download Report

Downloaded	Unavailable
2MASS_H 2MASS_J 2MASS_K WISE_W1 WISE_W2 WISE_W3 WISE_W4 GALEX_NUV GALEX_FUV PanSTARRS_g PanSTARRS_r PanSTARRS_i PanSTARRS_z PanSTARRS_y SDSS_i SDSS_r SDSS_u SDSS_z SDSS_g	DES_g DES_r DES_i DES_z DES_Y

Processing Status: completed

Task Name	Status	Time (s)
Cutout download	processed	0.94
Transient MWEBV	processed	0.1
Host match	processed	5.48
Host information	processed	0.04
Host MWEBV	processed	0.06
Global aperture construction	processed	0.18
Global aperture photometry	processed	1.31
Validate global photometry	processed	2.58
Global host SED inference	processed	544.67
Local aperture photometry	processed	1.2
Validate local photometry	processed	0.02
Local host SED inference	processed	568.75

Imaging data

Spectral Energy Distribution

Aperture Photometry

Aperture details

RA, DEC (J2000):	14h34m27.30s, 21d56m58.85s
semi major axis, semi minor axis (arcsec):	5.49, 5.49
angle (degrees, anti-clockwise from east):	0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	2.66	1.77	22.839	0.725	AB
GALEX_NUV	4.18	2.03	22.348	0.528	AB
SDSS_u	-2.3	3.8			AB
SDSS_g	4.22	1.73	22.338	0.446	AB
PanSTARRS_g	2.5	1.28	22.906	0.555	AB
SDSS_r	-0.1	2.39			AB
PanSTARRS_r	6.17	1.35	21.924	0.237	AB
SDSS_i	8.44	4.17	21.584	0.536	AB
PanSTARRS_i	7.03	1.85	21.783	0.286	AB
PanSTARRS_z	-6.5	4.69			AB
SDSS_z	-13.81	12.19			AB
PanSTARRS_y	-3.78	12.3			AB
2MASS_J	-97.18	107.09			Vega
2MASS_H	-50.79	200.1			Vega
2MASS_K	29.95	196.66	18.371	7.130	Vega

Aperture details

RA, DEC (J2000):	14h34m28.50s, 21d56m56.33s
semi major axis, semi minor axis (arcsec):	6.27, 3.66
angle (degrees, anti-clockwise from east):	-88.55

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	12.16	3.79	21.187	0.339	AB
GALEX_NUV	29.59	3.94	20.222	0.144	AB
SDSS_u	48.53	3.75	19.685	0.084	AB
SDSS_g	108.65	3.05	18.810	0.031	AB
PanSTARRS_g	97.13	1.24	18.932	0.014	AB
SDSS_r	153.57	3.79	18.434	0.027	AB
PanSTARRS_r	146.7	1.38	18.484	0.010	AB
SDSS_i	179.19	4.94	18.267	0.030	AB
PanSTARRS_i	163.51	1.85	18.366	0.012	AB
PanSTARRS_z	172.88	3.74	18.306	0.023	AB
SDSS_z	213.76	11.28	18.075	0.057	AB
PanSTARRS_y	174.33	9.03	18.297	0.056	AB
2MASS_J	251.16	107.72	17.005	0.466	Vega
2MASS_H	485.22	199.09	15.818	0.445	Vega
2MASS_K	297.19	197.6	15.880	0.722	Vega
WISE_W1	93.75	19.55	16.271	0.226	Vega
WISE_W2	42.88	17.77	16.480	0.450	Vega
WISE_W3	-30.27	36.67			Vega
WISE_W4	234.33	203.51	11.355	0.943	Vega

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	6.359	6.988	7.501
{\rm log}_{10}({\rm SFR})	-2.528	-2.047	-1.597
{\rm log}_{10}({\rm sSFR})	-9.797	-9.031	-8.034
{\rm stellar\ age}	0.221	5.946	8.248

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.299	-0.444	0.018
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.498	-0.612	-0.031

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.942	1.508	2.247
\delta	-0.182	0.109	0.295
\tau_1/\tau_2	0.557	0.934	1.357
Q_{PAH}	0.489	1.663	4.082
U_{min}	2.925	8.413	15.850
{\rm log}_{10}(\gamma_e)\,	-3.115	-2.101	-0.923

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.681	-0.808	0.006
{\rm log}_{10}(\tau_{AGN})\,	1.023	1.376	1.900

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.456	-1.820	-1.315
0.03-0.10 Gyr	-4.070	-2.555	-1.804
0.10-0.33 Gyr	-5.442	-3.228	-2.484
0.33-1.10 Gyr	-6.142	-3.479	-2.728
1.10-3.66 Gyr	-6.617	-3.445	-2.651
3.66-12.17 Gyr	-6.494	-3.289	-2.475
12.17-13.52 Gyr	-6.618	-3.261	-2.132

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.175	8.292	8.396
{\rm log}_{10}({\rm SFR})	-1.572	-1.277	-0.979
{\rm log}_{10}({\rm sSFR})	-9.872	-9.558	-9.244
{\rm stellar\ age}	6.238	7.583	9.696

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.777	-1.440	-1.005
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.542	0.206	0.436

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.104	0.304	0.516
\delta	-0.403	0.014	0.276
\tau_1/\tau_2	0.569	0.941	1.337
Q_{PAH}	0.970	2.498	4.492
U_{min}	2.819	8.141	14.818
{\rm log}_{10}(\gamma_e)\,	-3.154	-2.230	-1.177

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.308	-1.631	-0.975
{\rm log}_{10}(\tau_{AGN})\,	1.133	1.507	1.873

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.440	-1.979	-1.696
0.03-0.10 Gyr	-1.463	-1.147	-0.833
0.10-0.33 Gyr	-2.291	-1.541	-1.174
0.33-1.10 Gyr	-2.794	-2.000	-1.627
1.10-3.66 Gyr	-2.711	-1.958	-1.640
3.66-12.17 Gyr	-2.051	-1.660	-1.482
12.17-13.52 Gyr	-2.042	-1.478	-0.826