2025syr results

2025syr results

Information

Transient

Name:	`AT2025syr`
Right ascension:	`20h56m58.74s`
Declination:	`-52d07m53.30s`
Discovery Date:	`July 26, 2025, 12:42 a.m.`
Classification:	`None`
Redshift:	`None`
MW E(B-V):	`0.032`

Host

Name:	`448301`
Right ascension:	`20h56m58.23s`
Declination:	`-52d07m56.55s`
Redshift:	`None`
Photometric Redshift:	`0.050`

Cutout Download Report

Downloaded	Unavailable
2MASS_H 2MASS_J 2MASS_K WISE_W1 WISE_W2 WISE_W3 WISE_W4 DES_g DES_r DES_z	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_i DES_Y

Processing Status: completed

Task Name	Status	Time (s)
Cutout download	processed	29.6
Transient MWEBV	processed	0.04
Host match	processed	4.07
Host information	processed	0.16
Host MWEBV	processed	0.04
Global aperture construction	processed	0.48
Global aperture photometry	processed	1.87
Validate global photometry	processed	4.9
Global host SED inference	processed	583.96
Local aperture photometry	processed	1.97
Validate local photometry	processed	0.02
Local host SED inference	processed	495.11

Imaging data

Spectral Energy Distribution

Aperture Photometry

Aperture details

RA, DEC (J2000):	20h56m58.74s, -52d07m53.30s
semi major axis, semi minor axis (arcsec):	2.03, 2.03
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	45.12	0.25	19.764	0.006	AB
DES_r	81.07	0.43	19.128	0.006	AB
DES_z	119.17	1.44	18.710	0.013	AB

Aperture details

RA, DEC (J2000):	20h56m58.28s, -52d07m56.36s
semi major axis, semi minor axis (arcsec):	17.89, 13.51
angle (degrees, anti-clockwise from east):	17.32

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_g	1236.86	1.45	16.169	0.001	AB
DES_r	2267.21	2.4	15.511	0.001	AB
DES_z	3390.86	8.13	15.074	0.003	AB
2MASS_J	4480.35	408.07	13.877	0.099	Vega
2MASS_K	4871.83	688.29	12.843	0.153	Vega
WISE_W1	2356.42	40.79	12.770	0.019	Vega
WISE_W2	1497.18	45.53	12.623	0.033	Vega
WISE_W3	6117.76	165.51	9.260	0.029	Vega

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.898	9.081	9.238
{\rm log}_{10}({\rm SFR})	-1.440	-0.795	-0.297
{\rm log}_{10}({\rm sSFR})	-10.557	-9.892	-9.282
{\rm stellar\ age}	5.098	6.955	8.852

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.760	-1.308	-0.710
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.845	-1.013	0.220

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.393	0.741	1.121
\delta	-0.509	-0.193	0.180
\tau_1/\tau_2	0.732	1.070	1.420
Q_{PAH}	0.499	2.093	5.014
U_{min}	2.899	8.050	14.844
{\rm log}_{10}(\gamma_e)\,	-3.235	-2.079	-0.956

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.705	-1.352	-0.305
{\rm log}_{10}(\tau_{AGN})\,	0.976	1.470	1.956

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.523	-0.829	-0.348
0.03-0.10 Gyr	-1.736	-0.868	-0.276
0.10-0.33 Gyr	-1.951	-1.050	-0.490
0.33-1.09 Gyr	-2.069	-1.164	-0.685
1.09-3.57 Gyr	-1.900	-1.030	-0.713
3.57-11.78 Gyr	-1.358	-0.870	-0.629
11.78-13.08 Gyr	-1.465	-0.820	-0.130

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.346	10.467	10.593
{\rm log}_{10}({\rm SFR})	-0.453	0.300	0.760
{\rm log}_{10}({\rm sSFR})	-10.949	-10.196	-9.674
{\rm stellar\ age}	5.657	7.262	9.078

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.899	-0.544	-0.328
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.711	-0.250	0.318

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.181	0.329	0.534
\delta	-0.879	-0.564	0.024
\tau_1/\tau_2	0.575	0.951	1.349
Q_{PAH}	0.588	1.440	3.917
U_{min}	2.629	7.431	14.518
{\rm log}_{10}(\gamma_e)\,	-3.371	-2.263	-1.273

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.896	-2.636	-1.728
{\rm log}_{10}(\tau_{AGN})\,	1.033	1.527	1.915

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.217	0.294	0.597
0.03-0.10 Gyr	-1.135	0.228	0.851
0.10-0.33 Gyr	-1.294	0.026	0.585
0.33-1.09 Gyr	-0.971	0.067	0.482
1.09-3.57 Gyr	-0.404	0.369	0.733
3.57-11.78 Gyr	0.083	0.530	0.743
11.78-13.08 Gyr	-0.095	0.612	1.286