2025swn

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Information

Transient

Name: AT2025swn
Right ascension: 17h58m52.91s
Declination: 30d42m10.64s
Discovery Date: July 31, 2025, 6:44 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.038

Host

Name:
Right ascension: 17h58m53.15s
Declination: 30d42m17.28s
Redshift: None
Photometric Redshift: 0.060

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	16.27
Transient MWEBV	processed	0.09
Host match	processed	7.64
Host information	processed	0.14
Host MWEBV	processed	0.04
Global aperture construction	processed	0.73
Global aperture photometry	processed	4.78
Validate global photometry	processed	13.55
Global host SED inference	processed	452.15
Local aperture photometry	processed	5.68
Validate local photometry	processed	0.02
Local host SED inference	processed	460.52

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) = 17h58m52.91s, 30d42m10.64s
semi major axis, semi minor axis (arcsec) = 1.73, 1.73
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	4.43	0.3	22.285	0.073	AB
PanSTARRS_g	4.06	0.36	22.379	0.097	AB
PanSTARRS_r	6.46	0.51	21.874	0.085	AB
DES_r	7.46	0.24	21.718	0.035	AB
PanSTARRS_i	8.13	0.47	21.625	0.062	AB
PanSTARRS_z	7.95	1.29	21.649	0.176	AB
DES_z	10.0	0.73	21.400	0.079	AB
PanSTARRS_y	9.79	3.59	21.423	0.398	AB

Aperture details

RA, DEC (J2000) = 17h58m53.15s, 30d42m17.43s
semi major axis, semi minor axis (arcsec) = 9.52, 5.28
angle (degrees, anti-clockwise from east) = -169.18

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_g	131.99	1.52	18.599	0.013	AB
PanSTARRS_g	132.17	1.49	18.597	0.012	AB
PanSTARRS_r	197.28	2.12	18.162	0.012	AB
DES_r	212.43	1.16	18.082	0.006	AB
PanSTARRS_i	240.81	1.91	17.946	0.009	AB
PanSTARRS_z	268.04	5.25	17.829	0.021	AB
DES_z	281.31	3.61	17.777	0.014	AB
PanSTARRS_y	301.61	14.61	17.701	0.053	AB
2MASS_J	441.56	150.41	16.393	0.370	Vega
2MASS_H	224.37	232.57	16.655	1.125	Vega
2MASS_K	697.07	237.98	14.954	0.371	Vega
WISE_W1	125.98	13.51	15.950	0.116	Vega
WISE_W2	64.43	13.89	16.038	0.234	Vega
WISE_W3	116.88	57.95	13.557	0.538	Vega
WISE_W4	503.5	429.75	10.525	0.927	Vega

Imaging data

Click the image to load the interactive plot.

Spectral Energy Distribution

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	7.731	8.013	8.179
{\rm log}_{10}({\rm SFR})	-2.249	-1.639	-1.142
{\rm log}_{10}({\rm sSFR})	-10.298	-9.633	-8.972
{\rm stellar\ age}	1.916	5.222	7.085

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.618	-0.992	-0.298
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.555	-0.308	0.254

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.384	0.790	1.270
\delta	-0.281	0.049	0.268
\tau_1/\tau_2	0.654	1.005	1.366
Q_{PAH}	1.145	2.979	5.230
U_{min}	2.871	7.923	14.907
{\rm log}_{10}(\gamma_e)\,	-2.643	-1.692	-0.672

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-1.307	-0.270	0.272
{\rm log}_{10}(\tau_{AGN})\,	1.035	1.522	1.910

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.298	-1.667	-1.203
0.03-0.10 Gyr	-2.373	-1.685	-1.114
0.10-0.33 Gyr	-2.258	-1.602	-1.059
0.33-1.08 Gyr	-2.490	-1.756	-1.339
1.08-3.55 Gyr	-2.748	-1.916	-1.618
3.55-11.66 Gyr	-3.106	-2.058	-1.716
11.66-12.96 Gyr	-3.236	-2.170	-1.569

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.329	9.460	9.578
{\rm log}_{10}({\rm SFR})	-1.708	-1.001	-0.381
{\rm log}_{10}({\rm sSFR})	-11.096	-10.453	-9.786
{\rm stellar\ age}	3.966	6.123	7.623

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.613	-1.222	-0.867
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.177	0.108	0.395

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.144	0.265	0.422
\delta	-0.700	-0.309	0.094
\tau_1/\tau_2	0.651	0.996	1.368
Q_{PAH}	0.887	2.381	4.276
U_{min}	2.872	8.276	15.318
{\rm log}_{10}(\gamma_e)\,	-2.417	-1.325	-0.458

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.295	-3.253	-2.008
{\rm log}_{10}(\tau_{AGN})\,	1.068	1.585	1.970

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.011	-1.217	-0.891
0.03-0.10 Gyr	-1.895	-0.966	-0.255
0.10-0.33 Gyr	-1.237	-0.462	-0.001
0.33-1.08 Gyr	-0.850	-0.382	-0.074
1.08-3.55 Gyr	-0.822	-0.420	-0.154
3.55-11.66 Gyr	-1.069	-0.524	-0.297
11.66-12.96 Gyr	-1.407	-0.554	0.047