2025xah

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Information

Transient

Name: AT2025xah
Right ascension: 8h29m42.88s
Declination: 35d35m37.03s
Discovery Date: Sept. 6, 2025, 12:12 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.039

Host

Name: SDSSJ082942.63+35354
Right ascension: 8h29m42.72s
Declination: 35d35m40.02s
Redshift: None
Photometric Redshift: 0.046

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	20.75
Transient MWEBV	processed	0.04
Host match	processed	4.88
Host information	processed	0.17
Host MWEBV	processed	0.04
Global aperture construction	processed	0.65
Global aperture photometry	processed	4.67
Validate global photometry	processed	12.64
Global host SED inference	processed	408.24
Local aperture photometry	processed	5.26
Validate local photometry	processed	0.02
Local host SED inference	processed	447.92

Cutout Download Report

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:

Aperture Photometry

Aperture details

RA, DEC (J2000) = 8h29m42.88s, 35d35m37.03s
semi major axis, semi minor axis (arcsec) = 2.23, 2.23
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_g	13.49	0.31	21.075	0.025	AB
PanSTARRS_g	14.13	0.5	21.024	0.038	AB
PanSTARRS_r	18.38	0.61	20.739	0.036	AB
PanSTARRS_i	22.74	0.5	20.508	0.024	AB
PanSTARRS_z	22.53	1.23	20.518	0.059	AB
DES_z	20.06	0.81	20.644	0.044	AB
PanSTARRS_y	28.04	4.1	20.281	0.159	AB

Aperture details

RA, DEC (J2000) = 8h29m42.62s, 35d35m40.17s
semi major axis, semi minor axis (arcsec) = 10.82, 4.15
angle (degrees, anti-clockwise from east) = -2.42

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	28.63	5.39	20.258	0.204	AB
GALEX_NUV	35.17	2.77	20.034	0.085	AB
DES_g	138.39	0.97	18.547	0.008	AB
PanSTARRS_g	150.46	1.51	18.456	0.011	AB
PanSTARRS_r	204.04	1.84	18.126	0.010	AB
PanSTARRS_i	248.18	1.49	17.913	0.007	AB
PanSTARRS_z	269.89	3.69	17.822	0.015	AB
DES_z	228.18	2.63	18.004	0.013	AB
PanSTARRS_y	324.93	12.25	17.621	0.041	AB
2MASS_J	523.1	146.52	16.209	0.304	Vega
2MASS_H	318.23	223.97	16.276	0.764	Vega
2MASS_K	-344.64	248.22			Vega
WISE_W1	132.33	15.84	15.897	0.130	Vega
WISE_W2	62.08	16.81	16.079	0.294	Vega
WISE_W3	-112.29	79.9			Vega
WISE_W4	487.71	522.57	10.560	1.163	Vega

Imaging data

Click the image to load the interactive plot.

Spectral Energy Distribution

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Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	7.843	8.088	8.218
{\rm log}_{10}({\rm SFR})	-1.949	-1.325	-0.576
{\rm log}_{10}({\rm sSFR})	-10.111	-9.463	-8.386
{\rm stellar\ age}	1.687	5.638	7.413

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.795	-1.458	-0.950
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.719	-0.740	0.167

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.150	0.465	0.951
\delta	-0.500	-0.073	0.215
\tau_1/\tau_2	0.733	1.108	1.470
Q_{PAH}	0.859	2.357	4.693
U_{min}	2.867	8.087	15.427
{\rm log}_{10}(\gamma_e)\,	-2.990	-1.990	-0.901

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.483	-0.509	-0.004
{\rm log}_{10}(\tau_{AGN})\,	1.148	1.440	1.851

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.173	-1.676	-1.246
0.03-0.10 Gyr	-1.977	-1.261	-0.434
0.10-0.33 Gyr	-2.522	-1.666	-1.113
0.33-1.09 Gyr	-3.192	-1.952	-1.488
1.09-3.59 Gyr	-3.087	-1.928	-1.605
3.59-11.83 Gyr	-3.514	-1.987	-1.659
11.83-13.15 Gyr	-3.412	-2.009	-1.445

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.118	9.238	9.349
{\rm log}_{10}({\rm SFR})	-0.627	-0.383	-0.137
{\rm log}_{10}({\rm sSFR})	-9.858	-9.616	-9.337
{\rm stellar\ age}	6.107	7.189	8.720

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.578	-1.126	-0.722
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	0.021	0.271	0.412

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.129	0.265	0.426
\delta	-0.215	0.115	0.302
\tau_1/\tau_2	0.569	0.916	1.284
Q_{PAH}	0.752	2.157	4.214
U_{min}	2.979	8.354	15.680
{\rm log}_{10}(\gamma_e)\,	-2.678	-1.724	-0.683

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.263	-3.315	-2.185
{\rm log}_{10}(\tau_{AGN})\,	1.042	1.563	1.947

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.573	-1.021	-0.725
0.03-0.10 Gyr	-0.552	-0.252	0.013
0.10-0.33 Gyr	-1.156	-0.617	-0.300
0.33-1.09 Gyr	-1.337	-0.886	-0.633
1.09-3.59 Gyr	-1.352	-0.890	-0.652
3.59-11.83 Gyr	-0.975	-0.695	-0.529
11.83-13.15 Gyr	-1.045	-0.553	0.034