2025khy

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Information

Transient

Name: AT2025khy
Right ascension: 23h28m52.21s
Declination: 9d00m35.86s
Discovery Date: May 8, 2025, 11:25 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.037

Host

Name: 2025khy
Right ascension: 23h28m52.78s
Declination: 9d00m34.62s
Redshift: 0.039517
Photometric Redshift: 0.082

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	17.56
Transient MWEBV	processed	0.03
Host match	processed	1.68
Host information	processed	0.08
Host MWEBV	processed	0.04
Global aperture construction	processed	0.63
Global aperture photometry	processed	7.42
Validate global photometry	processed	19.48
Global host SED inference	processed	573.83
Local aperture photometry	processed	7.45
Validate local photometry	processed	0.02
Local host SED inference	processed	574.69

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) = 23h28m52.21s, 9d00m35.86s
semi major axis, semi minor axis (arcsec) = 2.56, 2.56
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	11.42	3.0	21.255	0.285	AB
SDSS_g	2.36	0.95	22.969	0.439	AB
DES_g	4.56	0.18	22.253	0.043	AB
PanSTARRS_g	4.67	0.63	22.227	0.147	AB
SDSS_r	5.89	1.64	21.975	0.302	AB
PanSTARRS_r	4.46	0.58	22.276	0.140	AB
DES_r	5.99	0.4	21.956	0.073	AB
SDSS_i	5.22	2.51	22.106	0.523	AB
PanSTARRS_i	7.11	0.83	21.771	0.127	AB
PanSTARRS_z	14.62	1.73	20.987	0.128	AB
SDSS_z	25.76	8.57	20.373	0.361	AB
DES_z	7.57	0.71	21.702	0.101	AB
PanSTARRS_y	7.89	4.52	21.657	0.621	AB

Aperture details

RA, DEC (J2000) = 23h28m52.77s, 9d00m34.88s
semi major axis, semi minor axis (arcsec) = 7.88, 5.37
angle (degrees, anti-clockwise from east) = -30.23

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	24.94	1.32	20.408	0.058	AB
GALEX_NUV	28.73	0.9	20.254	0.034	AB
SDSS_u	94.57	7.78	18.961	0.089	AB
SDSS_g	138.53	3.62	18.546	0.028	AB
PanSTARRS_g	148.52	1.63	18.471	0.012	AB
SDSS_r	201.08	5.16	18.142	0.028	AB
PanSTARRS_r	199.86	1.48	18.148	0.008	AB
DES_r	221.48	1.41	18.037	0.007	AB
SDSS_i	233.64	7.17	17.979	0.033	AB
PanSTARRS_i	238.83	2.14	17.955	0.010	AB
PanSTARRS_z	278.79	4.4	17.787	0.017	AB
SDSS_z	339.2	21.98	17.574	0.070	AB
DES_z	293.32	2.87	17.732	0.011	AB
PanSTARRS_y	266.08	11.47	17.837	0.047	AB
2MASS_J	357.5	177.71	16.622	0.540	Vega
2MASS_H	605.61	285.75	15.577	0.512	Vega
2MASS_K	39.0	277.0	18.085	7.712	Vega
WISE_W1	155.14	15.02	15.724	0.105	Vega
WISE_W2	102.65	22.49	15.533	0.238	Vega
WISE_W3	106.53	95.32	13.657	0.971	Vega
WISE_W4	364.3	443.32	10.876	1.321	Vega

Imaging data

Click the image to load the interactive plot.

Spectral Energy Distribution

Click the image to load the interactive plot.

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	7.064	7.442	7.762
{\rm log}_{10}({\rm SFR})	-1.700	-1.042	-0.612
{\rm log}_{10}({\rm sSFR})	-9.406	-8.227	-7.914
{\rm stellar\ age}	0.068	2.408	7.186

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.044	-0.169	0.096
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.647	-0.981	-0.180

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.624	1.129	1.890
\delta	0.048	0.255	0.357
\tau_1/\tau_2	0.605	1.090	1.576
Q_{PAH}	0.829	2.565	5.275
U_{min}	3.467	9.492	17.928
{\rm log}_{10}(\gamma_e)\,	-2.928	-1.579	-0.502

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.621	-0.509	0.155
{\rm log}_{10}(\tau_{AGN})\,	1.185	1.590	1.986

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.028	-2.028	-1.465
0.03-0.10 Gyr	-1.634	-0.912	-0.458
0.10-0.33 Gyr	-4.679	-2.709	-1.741
0.33-1.09 Gyr	-6.921	-3.627	-2.243
1.09-3.60 Gyr	-7.929	-3.718	-2.313
3.60-11.90 Gyr	-8.165	-3.636	-2.242
11.90-13.23 Gyr	-8.006	-3.300	-1.945

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.272	8.874	9.226
{\rm log}_{10}({\rm SFR})	-0.182	0.190	0.409
{\rm log}_{10}({\rm sSFR})	-9.264	-8.665	-7.943
{\rm stellar\ age}	0.242	6.488	10.449

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.202	-0.663	-0.350
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.730	-0.731	0.269

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.192	0.307	0.511
\delta	-0.759	-0.507	-0.225
\tau_1/\tau_2	0.441	0.916	1.396
Q_{PAH}	0.580	1.634	3.222
U_{min}	3.551	9.730	17.840
{\rm log}_{10}(\gamma_e)\,	-3.239	-2.070	-1.044

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.007	-2.698	-1.778
{\rm log}_{10}(\tau_{AGN})\,	1.006	1.423	1.877

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.530	-2.248	-1.397
0.03-0.10 Gyr	-0.021	0.352	0.572
0.10-0.33 Gyr	-3.944	-2.627	-1.000
0.33-1.09 Gyr	-6.407	-3.747	-1.395
1.09-3.60 Gyr	-5.637	-2.628	-1.073
3.60-11.90 Gyr	-4.827	-1.652	-0.804
11.90-13.23 Gyr	-4.897	-1.207	0.092