2025ywh

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Information

Transient

Name: AT2025ywh
Right ascension: 22h31m41.48s
Declination: 20d24m36.57s
Discovery Date: Sept. 29, 2025, 7 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.043

Host

Name:
Right ascension: 22h31m41.54s
Declination: 20d24m35.63s
Redshift: None
Photometric Redshift: 0.133

Processing Status

Task Name	Status	Time taken (s)	Warning Flag
Host match	processed	5.12
Cutout download	processed	16.87
Global aperture construction	processed	2.66
Local aperture photometry	processed	6.44
Global aperture photometry	processed	6.73
Validate local photometry	no valid phot	0.02
Validate global photometry	processed	17.95
Host information	processed	0.11
Global host SED inference	processed	958.19
Local host SED inference	not processed	None
Transient information	processed	0.0
Transient MWEBV	processed	0.06
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) = 22h31m41.48s, 20d24m36.57s
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) = 22h31m41.53s, 20d24m35.91s
semi major axis, semi minor axis (arcsec) = 4.72, 4.35
angle (degrees, anti-clockwise from east) = -62.92

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	7.66	2.17	21.690	0.308	AB
GALEX_NUV	5.76	1.53	21.998	0.288	AB
SDSS_u	5.17	4.4	22.116	0.924	AB
SDSS_g	9.5	1.53	21.456	0.175	AB
DES_g	12.89	0.35	21.124	0.030	AB
PanSTARRS_g	16.01	0.99	20.889	0.067	AB
SDSS_r	13.31	2.53	21.090	0.207	AB
PanSTARRS_r	21.79	1.04	20.554	0.052	AB
DES_r	19.0	0.81	20.703	0.046	AB
SDSS_i	24.19	3.81	20.441	0.171	AB
PanSTARRS_i	22.92	1.27	20.500	0.060	AB
PanSTARRS_z	24.91	3.12	20.409	0.136	AB
SDSS_z	-2.42	18.54			AB
DES_z	28.65	2.77	20.257	0.105	AB
PanSTARRS_y	53.23	7.1	19.585	0.145	AB
2MASS_J	-27.5	118.29			Vega
2MASS_H	239.07	148.77	16.586	0.676	Vega
2MASS_K	136.91	240.0	16.721	1.903	Vega
WISE_W1	63.61	8.24	16.692	0.141	Vega
WISE_W2	29.06	10.98	16.903	0.410	Vega
WISE_W3	87.63	64.02	13.869	0.793	Vega
WISE_W4	-3.33	346.72			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})\,	8.580	9.010	9.280
{\rm log}_{10}({\rm SFR})	-0.079	0.424	0.704
{\rm log}_{10}({\rm sSFR})	-9.317	-8.492	-7.943
{\rm stellar\ age}	0.125	4.185	6.869

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.182	-0.418	-0.010
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.541	-0.255	-0.046

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.310	0.886	1.314
\delta	0.266	0.354	0.389
\tau_1/\tau_2	0.729	1.227	1.654
Q_{PAH}	0.926	2.437	4.449
U_{min}	3.417	9.549	17.151
{\rm log}_{10}(\gamma_e)\,	-3.088	-2.097	-0.974

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.315	-1.193	-0.265
{\rm log}_{10}(\tau_{AGN})\,	1.028	1.387	1.814

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.798	-0.156	0.312
0.03-0.10 Gyr	-0.005	0.515	0.848
0.10-0.32 Gyr	-2.629	-0.866	-0.235
0.32-1.04 Gyr	-4.218	-1.365	-0.693
1.04-3.36 Gyr	-4.460	-1.407	-0.733
3.36-10.85 Gyr	-4.786	-1.340	-0.638
10.85-12.05 Gyr	-4.506	-1.207	-0.293