2025ssd

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Information

Transient

Name: AT2025ssd
Right ascension: 0h07m57.67s
Declination: 15d06m12.22s
Discovery Date: July 30, 2025, 11:29 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.047

Host

Name: 1475319
Right ascension: 0h07m57.70s
Declination: 15d06m12.33s
Redshift: 0.132046
Photometric Redshift:

Processing Status

Task Name	Status	Time taken (s)	Warning Flag
Host match	processed	4.06
Cutout download	processed	33.83
Global aperture construction	processed	0.66
Local aperture photometry	processed	7.13
Global aperture photometry	processed	6.01
Validate local photometry	no valid phot	0.03
Validate global photometry	processed	17.65
Host information	processed	0.16
Global host SED inference	processed	483.99
Local host SED inference	not processed	None
Transient information	processed	0.0
Transient MWEBV	processed	0.09
Host MWEBV	processed	0.04
Processing status	blocked	N/A	N/A

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) = 0h07m57.67s, 15d06m12.22s
semi major axis, semi minor axis (arcsec) = 0.85, 0.85
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys

Data not available

Aperture details

RA, DEC (J2000) = 0h07m57.71s, 15d06m12.41s
semi major axis, semi minor axis (arcsec) = 7.69, 5.62
angle (degrees, anti-clockwise from east) = -157.67

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	1.89	0.82	23.209	0.473	AB
GALEX_NUV	3.55	0.72	22.525	0.221	AB
SDSS_u	91.08	6.09	19.001	0.073	AB
SDSS_g	380.26	5.42	17.450	0.015	AB
PanSTARRS_g	422.21	1.48	17.336	0.004	AB
SDSS_r	955.05	8.6	16.450	0.010	AB
PanSTARRS_r	980.18	2.2	16.422	0.002	AB
DES_r	1070.19	3.33	16.326	0.003	AB
SDSS_i	1465.84	11.18	15.985	0.008	AB
PanSTARRS_i	1468.19	2.07	15.983	0.002	AB
PanSTARRS_z	1939.53	5.31	15.681	0.003	AB
SDSS_z	1989.39	30.84	15.653	0.017	AB
DES_z	2066.86	13.31	15.612	0.007	AB
PanSTARRS_y	2373.96	9.58	15.461	0.004	AB
2MASS_J	3087.57	140.25	14.281	0.049	Vega
2MASS_H	3573.73	185.01	13.650	0.056	Vega
2MASS_K	3713.84	301.09	13.138	0.088	Vega
WISE_W1	1563.48	26.69	13.216	0.019	Vega
WISE_W2	991.34	32.4	13.070	0.035	Vega
WISE_W3	298.35	91.49	12.539	0.333	Vega
WISE_W4	-324.71	400.9			Vega

Imaging data

Spectral Energy Distribution

Host SED inference

Local parameter details

Documentation

Data not available

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	11.291	11.402	11.450
{\rm log}_{10}({\rm SFR})	-5.432	-2.196	-0.967
{\rm log}_{10}({\rm sSFR})	-16.882	-13.706	-12.347
{\rm stellar\ age}	7.263	10.746	11.459

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.831	-0.631	-0.474
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.540	-0.660	0.156

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.134	0.222	0.344
\delta	-0.589	-0.293	-0.057
\tau_1/\tau_2	0.492	0.931	1.435
Q_{PAH}	0.554	1.955	3.872
U_{min}	3.545	10.003	18.381
{\rm log}_{10}(\gamma_e)\,	-2.782	-1.470	-0.562

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.263	-3.236	-2.255
{\rm log}_{10}(\tau_{AGN})\,	1.089	1.585	1.955

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-6.927	-3.185	-1.303
0.03-0.10 Gyr	-6.145	-2.354	-0.901
0.10-0.32 Gyr	-6.493	-3.140	-1.180
0.32-1.04 Gyr	-5.997	-3.064	-1.106
1.04-3.36 Gyr	-3.527	-1.862	-0.187
3.36-10.86 Gyr	-1.275	0.985	1.630
10.86-12.07 Gyr	1.056	2.492	2.616