2025ddh

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Information

Transient

Name: AT2025ddh
Right ascension: 8h38m55.36s
Declination: 43d25m27.45s
Discovery Date: March 2, 2025, 7:57 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.022

Host

Name: 2025ddh
Right ascension: 8h38m56.04s
Declination: 43d25m52.41s
Redshift: 0.054466
Photometric Redshift: 0.064

Processing Status

Task Name	Status	Time taken (s)
Host match	processed	3.34
Cutout download	processed	13.67
Global aperture construction	processed	0.6
Local aperture photometry	processed	3.91
Global aperture photometry	processed	4.05
Validate local photometry	processed	0.02
Validate global photometry	processed	14.37
Host information	processed	0.08
Global host SED inference	processed	365.06
Local host SED inference	failed	0.01
Transient information	processed	0.0
Transient MWEBV	processed	0.04
Host MWEBV	processed	0.05
Log transient processing status	blocked	None

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) = 8h38m55.36s, 43d25m27.45s
semi major axis, semi minor axis (arcsec) = 1.89, 1.89
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	0.32	1.53	25.125	5.142	AB
SDSS_g	1.22	0.62	23.685	0.554	AB
PanSTARRS_g	0.37	0.34	24.988	1.018	AB
SDSS_r	-0.99	0.94			AB
PanSTARRS_r	1.07	0.42	23.822	0.427	AB
SDSS_i	-0.12	1.49			AB
PanSTARRS_i	1.05	0.45	23.848	0.464	AB
PanSTARRS_z	1.15	1.19	23.749	1.127	AB
SDSS_z	0.36	4.83	25.018	14.672	AB
PanSTARRS_y	7.68	3.77	21.686	0.533	AB

Aperture details

RA, DEC (J2000) = 8h38m56.00s, 43d25m51.97s
semi major axis, semi minor axis (arcsec) = 20.47, 8.98
angle (degrees, anti-clockwise from east) = -169.05

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	61.25	1.26	19.432	0.022	AB
GALEX_NUV	94.32	0.99	18.964	0.011	AB
SDSS_u	259.74	11.69	17.864	0.049	AB
SDSS_g	1069.35	9.22	16.327	0.009	AB
PanSTARRS_g	1169.42	2.54	16.230	0.002	AB
SDSS_r	1974.42	12.99	15.661	0.007	AB
PanSTARRS_r	2112.72	3.14	15.588	0.002	AB
SDSS_i	2735.43	16.8	15.307	0.007	AB
PanSTARRS_z	3031.08	8.46	15.196	0.003	AB
SDSS_z	3268.32	36.72	15.114	0.012	AB
PanSTARRS_y	4046.99	25.18	14.882	0.007	AB
2MASS_J	4742.0	277.26	13.815	0.063	Vega
2MASS_H	5039.74	396.05	13.276	0.085	Vega
2MASS_K	5922.76	487.76	12.631	0.089	Vega
WISE_W1	2782.91	36.43	12.590	0.014	Vega
WISE_W2	1719.78	46.26	12.472	0.029	Vega
WISE_W3	5111.43	183.45	9.455	0.039	Vega
WISE_W4	5787.5	1110.35	7.874	0.208	Vega

Imaging data

Spectral Energy Distribution

Host SED inference

Local parameter details

Documentation

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.502	10.574	10.637
{\rm log}_{10}({\rm SFR})	-0.194	-0.009	0.172
{\rm log}_{10}({\rm sSFR})	-10.773	-10.581	-10.398
{\rm stellar\ age}	5.450	6.588	7.591

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.454	-0.243	-0.089
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.088	0.071	0.211

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.221	0.331	0.479
\delta	-0.406	-0.116	0.108
\tau_1/\tau_2	0.559	0.895	1.244
Q_{PAH}	0.873	1.844	3.107
U_{min}	2.732	7.041	13.594
{\rm log}_{10}(\gamma_e)\,	-2.987	-2.191	-1.562

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.317	-3.406	-2.501
{\rm log}_{10}(\tau_{AGN})\,	0.994	1.444	1.880

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	0.129	0.301	0.469
0.03-0.10 Gyr	-0.924	-0.299	0.057
0.10-0.33 Gyr	-0.744	-0.165	0.196
0.33-1.08 Gyr	-0.007	0.396	0.628
1.08-3.56 Gyr	0.559	0.779	0.966
3.56-11.73 Gyr	0.411	0.654	0.792
11.73-13.03 Gyr	0.030	0.634	1.071