2025spn

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Information

Transient

Name: AT2025spn
Right ascension: 17h44m08.12s
Declination: 37d46m48.08s
Discovery Date: July 29, 2025, 4:40 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.029

Host

Name:
Right ascension: 17h44m08.30s
Declination: 37d46m49.48s
Redshift: None
Photometric Redshift: 0.118

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	29.41
Transient MWEBV	processed	0.12
Host match	processed	6.98
Host information	processed	0.14
Host MWEBV	processed	0.04
Global aperture construction	processed	0.66
Global aperture photometry	processed	4.49
Validate global photometry	processed	12.42
Global host SED inference	processed	449.8
Local aperture photometry	processed	5.01
Validate local photometry	processed	0.02
Local host SED inference	not enough filters	20.15

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) = 17h44m08.12s, 37d46m48.08s
semi major axis, semi minor axis (arcsec) = 0.94, 0.94
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_z	32.56	1.18	20.118	0.039	AB

Aperture details

RA, DEC (J2000) = 17h44m08.28s, 37d46m49.72s
semi major axis, semi minor axis (arcsec) = 9.03, 7.57
angle (degrees, anti-clockwise from east) = -84.78

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	18.26	3.58	20.746	0.213	AB
GALEX_NUV	31.74	3.12	20.146	0.107	AB
DES_g	252.38	1.08	17.895	0.005	AB
PanSTARRS_g	257.8	1.97	17.872	0.008	AB
PanSTARRS_r	468.05	2.78	17.224	0.006	AB
PanSTARRS_i	673.7	1.64	16.829	0.003	AB
PanSTARRS_z	841.11	4.7	16.588	0.006	AB
DES_z	846.38	6.25	16.581	0.008	AB
PanSTARRS_y	987.44	12.35	16.414	0.014	AB
2MASS_J	1234.74	166.08	15.276	0.146	Vega
2MASS_H	922.66	278.53	15.120	0.328	Vega
2MASS_K	1178.05	320.6	14.384	0.295	Vega
WISE_W1	578.64	18.29	14.295	0.034	Vega
WISE_W2	331.51	25.63	14.260	0.084	Vega
WISE_W3	558.57	74.8	11.858	0.145	Vega
WISE_W4	497.59	456.32	10.538	0.996	Vega

Imaging data

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Spectral Energy Distribution

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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})\,	10.725	10.767	10.847
{\rm log}_{10}({\rm SFR})	0.277	0.535	0.812
{\rm log}_{10}({\rm sSFR})	-10.508	-10.228	-9.954
{\rm stellar\ age}	7.358	8.798	11.200

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.621	-0.482	-0.381
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.451	-0.033	0.361

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.091	0.144	0.234
\delta	-0.870	-0.619	-0.297
\tau_1/\tau_2	0.753	1.199	1.623
Q_{PAH}	0.585	1.546	3.285
U_{min}	2.647	7.922	15.506
{\rm log}_{10}(\gamma_e)\,	-2.754	-1.808	-1.154

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.559	-3.738	-2.727
{\rm log}_{10}(\tau_{AGN})\,	1.137	1.682	1.994

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.380	0.010	0.220
0.03-0.10 Gyr	0.350	0.655	0.953
0.10-0.32 Gyr	-0.667	0.194	0.535
0.32-1.05 Gyr	-1.543	-0.307	0.086
1.05-3.40 Gyr	-1.420	-0.265	0.211
3.40-11.01 Gyr	-0.069	0.871	1.025
11.01-12.24 Gyr	0.828	1.536	1.980