2025ahtn

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Information

Transient

Name: AT2025ahtn
Right ascension: 13h03m48.19s
Declination: 34d05m32.29s
Discovery Date: Dec. 20, 2025, 12:22 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.009

Host

Name: 2043718
Right ascension: 13h03m48.00s
Declination: 34d05m31.09s
Redshift: None
Photometric Redshift: 0.067

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	18.62
Transient MWEBV	processed	0.06
Host match	processed	4.45
Host information	processed	0.05
Host MWEBV	processed	0.11
Global aperture construction	processed	0.63
Global aperture photometry	processed	5.48
Validate global photometry	processed	3.48
Global host SED inference	processed	913.68
Local aperture photometry	processed	5.53
Validate local photometry	processed	0.03
Local host SED inference	processed	506.57

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) = 13h03m48.19s, 34d05m32.29s
semi major axis, semi minor axis (arcsec) = 1.56, 1.56
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	11.41	1.52	21.256	0.145	AB
SDSS_g	27.42	1.42	20.305	0.056	AB
DES_g	28.62	0.38	20.258	0.015	AB
PanSTARRS_g	29.18	0.45	20.237	0.017	AB
SDSS_r	42.48	1.82	19.830	0.047	AB
PanSTARRS_r	44.43	0.38	19.781	0.009	AB
SDSS_i	54.8	2.24	19.553	0.044	AB
PanSTARRS_i	56.7	0.54	19.516	0.010	AB
PanSTARRS_z	63.8	0.96	19.388	0.016	AB
SDSS_z	59.36	4.94	19.466	0.090	AB
DES_z	65.23	1.24	19.364	0.021	AB
PanSTARRS_y	68.43	2.2	19.312	0.035	AB

Aperture details

RA, DEC (J2000) = 13h03m47.98s, 34d05m31.27s
semi major axis, semi minor axis (arcsec) = 13.1, 11.67
angle (degrees, anti-clockwise from east) = -17.54

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	96.17	7.48	18.942	0.084	AB
GALEX_NUV	120.92	2.29	18.694	0.021	AB
SDSS_u	159.82	10.84	18.391	0.074	AB
SDSS_g	599.58	7.18	16.955	0.013	AB
DES_g	617.88	1.83	16.923	0.003	AB
PanSTARRS_g	626.04	3.47	16.908	0.006	AB
SDSS_r	923.21	9.59	16.487	0.011	AB
PanSTARRS_r	890.67	2.94	16.526	0.004	AB
SDSS_i	1143.59	12.83	16.254	0.012	AB
PanSTARRS_i	1118.89	4.21	16.278	0.004	AB
PanSTARRS_z	1215.63	7.53	16.188	0.007	AB
SDSS_z	1191.15	37.24	16.210	0.034	AB
DES_z	1148.32	5.96	16.250	0.006	AB
PanSTARRS_y	1311.67	17.35	16.105	0.014	AB
2MASS_J	1351.07	247.1	15.178	0.199	Vega
2MASS_H	1952.71	386.04	14.306	0.215	Vega
2MASS_K	1763.92	424.16	13.946	0.261	Vega
WISE_W1	857.57	22.17	13.868	0.028	Vega
WISE_W2	554.9	25.63	13.700	0.050	Vega
WISE_W3	1639.63	101.57	10.689	0.067	Vega
WISE_W4	2647.01	707.71	8.723	0.290	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})\,	8.835	8.994	9.113
{\rm log}_{10}({\rm SFR})	-1.998	-1.321	-0.572
{\rm log}_{10}({\rm sSFR})	-10.949	-10.318	-9.495
{\rm stellar\ age}	3.069	6.456	7.911

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.600	-1.113	-0.655
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.620	-0.819	0.069

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.171	0.483	1.016
\delta	-0.465	-0.004	0.302
\tau_1/\tau_2	0.705	1.065	1.427
Q_{PAH}	1.174	3.205	5.549
U_{min}	3.158	8.417	16.135
{\rm log}_{10}(\gamma_e)\,	-3.016	-2.049	-0.907

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.426	-0.610	-0.119
{\rm log}_{10}(\tau_{AGN})\,	1.067	1.483	1.907

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.758	-1.778	-1.256
0.03-0.10 Gyr	-2.104	-1.242	-0.463
0.10-0.33 Gyr	-1.659	-0.996	-0.300
0.33-1.08 Gyr	-1.880	-1.072	-0.566
1.08-3.53 Gyr	-2.047	-1.005	-0.710
3.53-11.58 Gyr	-1.965	-0.973	-0.744
11.58-12.87 Gyr	-2.091	-0.954	-0.392

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.107	10.172	10.234
{\rm log}_{10}({\rm SFR})	-0.173	0.020	0.224
{\rm log}_{10}({\rm sSFR})	-10.354	-10.147	-9.944
{\rm stellar\ age}	4.806	6.049	7.023

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.993	-0.757	-0.583
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.883	-1.694	-1.080

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.118	0.202	0.335
\delta	0.200	0.333	0.383
\tau_1/\tau_2	0.530	0.875	1.258
Q_{PAH}	1.296	3.055	5.183
U_{min}	2.594	7.447	14.220
{\rm log}_{10}(\gamma_e)\,	-2.911	-1.907	-1.217

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.787	-1.898	-1.572
{\rm log}_{10}(\tau_{AGN})\,	0.851	1.144	1.610

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.167	-0.018	0.116
0.03-0.10 Gyr	-0.269	0.029	0.311
0.10-0.33 Gyr	-0.118	0.163	0.387
0.33-1.08 Gyr	0.176	0.403	0.571
1.08-3.53 Gyr	0.194	0.394	0.581
3.53-11.58 Gyr	-0.047	0.220	0.360
11.58-12.87 Gyr	-0.307	0.230	0.622