2025ahby

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Information

Transient

Name: AT2025ahby
Right ascension: 13h44m36.15s
Declination: -29d55m52.84s
Discovery Date: Dec. 16, 2025, 1:40 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.050

Host

Name: 88925
Right ascension: 13h44m35.95s
Declination: -29d55m59.49s
Redshift: 0.037666
Photometric Redshift:

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	5.94
Transient MWEBV	processed	0.04
Host match	processed	4.41
Host information	processed	0.11
Host MWEBV	processed	0.04
Global aperture construction	processed	0.67
Global aperture photometry	processed	3.94
Validate global photometry	processed	12.02
Global host SED inference	processed	413.54
Local aperture photometry	processed	3.78
Validate local photometry	processed	0.02
Local host SED inference	processed	428.34

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) = 13h44m36.15s, -29d55m52.84s
semi major axis, semi minor axis (arcsec) = 2.68, 2.68
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
PanSTARRS_g	89.36	0.78	19.022	0.009	AB
PanSTARRS_r	145.35	1.33	18.494	0.010	AB
PanSTARRS_i	188.57	1.27	18.211	0.007	AB
PanSTARRS_z	233.7	1.99	17.978	0.009	AB
PanSTARRS_y	273.06	4.91	17.809	0.020	AB

Aperture details

RA, DEC (J2000) = 13h44m35.81s, -29d55m58.71s
semi major axis, semi minor axis (arcsec) = 20.69, 14.73
angle (degrees, anti-clockwise from east) = -69.94

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	303.7	4.46	17.694	0.016	AB
GALEX_NUV	505.68	3.32	17.140	0.007	AB
PanSTARRS_g	3276.76	5.04	15.111	0.002	AB
PanSTARRS_r	5512.6	8.6	14.547	0.002	AB
PanSTARRS_i	7399.34	8.15	14.227	0.001	AB
PanSTARRS_z	9322.31	12.99	13.976	0.002	AB
PanSTARRS_y	10551.25	32.34	13.842	0.003	AB
2MASS_J	13245.91	444.64	12.700	0.036	Vega
2MASS_H	18503.03	610.12	11.864	0.036	Vega
2MASS_K	15965.12	858.13	11.554	0.058	Vega
WISE_W1	8344.85	63.87	11.397	0.008	Vega
WISE_W2	5590.42	69.95	11.192	0.014	Vega
WISE_W3	31125.05	229.92	7.493	0.008	Vega
WISE_W4	51097.75	1688.91	5.509	0.036	Vega

Imaging data

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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})\,	8.877	9.068	9.200
{\rm log}_{10}({\rm SFR})	-1.958	-1.025	-0.330
{\rm log}_{10}({\rm sSFR})	-11.107	-10.144	-9.314
{\rm stellar\ age}	2.702	6.095	8.206

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.123	-0.531	-0.198
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.781	-1.090	-0.028

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.220	0.693	1.088
\delta	-0.577	-0.207	0.221
\tau_1/\tau_2	0.667	1.051	1.443
Q_{PAH}	1.055	2.934	5.087
U_{min}	3.194	8.632	15.894
{\rm log}_{10}(\gamma_e)\,	-3.007	-1.653	-0.792

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.952	-2.118	-0.709
{\rm log}_{10}(\tau_{AGN})\,	1.023	1.505	1.939

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.031	-1.204	-0.756
0.03-0.10 Gyr	-2.250	-0.995	-0.215
0.10-0.33 Gyr	-1.822	-0.884	-0.261
0.33-1.09 Gyr	-1.626	-0.872	-0.319
1.09-3.61 Gyr	-1.828	-0.956	-0.614
3.61-11.93 Gyr	-1.974	-0.995	-0.688
11.93-13.25 Gyr	-2.087	-0.980	-0.285

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.667	10.777	10.866
{\rm log}_{10}({\rm SFR})	0.794	1.063	1.413
{\rm log}_{10}({\rm sSFR})	-10.015	-9.710	-9.284
{\rm stellar\ age}	6.904	8.193	10.969

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.735	-0.379	-0.172
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.898	-1.651	-0.865

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.277	0.519	0.789
\delta	-0.291	-0.012	0.184
\tau_1/\tau_2	0.611	1.045	1.475
Q_{PAH}	0.825	1.582	3.064
U_{min}	2.544	7.297	13.981
{\rm log}_{10}(\gamma_e)\,	-3.432	-2.367	-1.761

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.468	-1.734	-1.311
{\rm log}_{10}(\tau_{AGN})\,	1.386	1.791	2.027

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.179	0.730	0.973
0.03-0.10 Gyr	0.795	1.156	1.557
0.10-0.33 Gyr	-0.680	0.346	0.957
0.33-1.09 Gyr	-1.124	-0.071	0.526
1.09-3.61 Gyr	-0.820	0.215	0.695
3.61-11.93 Gyr	0.282	0.836	1.004
11.93-13.25 Gyr	0.580	1.186	1.836