2025whd

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Information

Transient

Name: AT2025whd
Right ascension: 1h47m34.95s
Declination: -17d17m31.20s
Discovery Date: Aug. 25, 2025, 11:02 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.015

Host

Name:
Right ascension: 1h47m34.91s
Declination: -17d17m31.41s
Redshift: None
Photometric Redshift: 0.188

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	40.32
Transient MWEBV	processed	0.06
Host match	processed	7.43
Host information	processed	0.14
Host MWEBV	processed	0.04
Global aperture construction	processed	0.67
Global aperture photometry	processed	5.62
Validate global photometry	processed	16.33
Global host SED inference	processed	476.26
Local aperture photometry	processed	6.46
Validate local photometry	no valid phot	0.03
Local host SED inference	not processed	None

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) = 1h47m34.95s, -17d17m31.20s
semi major axis, semi minor axis (arcsec) = 0.64, 0.64
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) = 1h47m34.89s, -17d17m31.40s
semi major axis, semi minor axis (arcsec) = 5.09, 3.33
angle (degrees, anti-clockwise from east) = -113.36

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	1.12	0.77	23.775	0.746	AB
GALEX_NUV	1.78	1.08	23.273	0.659	AB
SDSS_u	10.73	4.03	21.324	0.408	AB
SDSS_g	50.65	2.17	19.638	0.047	AB
DES_g	49.64	0.3	19.660	0.007	AB
PanSTARRS_g	50.62	1.0	19.639	0.021	AB
SDSS_r	127.79	3.51	18.634	0.030	AB
PanSTARRS_r	125.19	1.27	18.656	0.011	AB
DES_r	136.82	0.51	18.560	0.004	AB
SDSS_i	199.19	4.87	18.152	0.027	AB
PanSTARRS_i	188.24	1.21	18.213	0.007	AB
PanSTARRS_z	249.66	2.75	17.907	0.012	AB
SDSS_z	269.2	12.63	17.825	0.051	AB
DES_z	264.86	2.07	17.842	0.008	AB
PanSTARRS_y	288.95	6.25	17.748	0.023	AB
2MASS_J	378.98	115.5	16.559	0.331	Vega
2MASS_H	404.18	195.31	16.016	0.525	Vega
2MASS_K	353.05	204.45	15.693	0.629	Vega
WISE_W1	160.85	14.87	15.685	0.100	Vega
WISE_W2	112.95	14.12	15.429	0.136	Vega
WISE_W3	-26.69	56.98			Vega
WISE_W4	49.8	421.85	13.037	9.198	Vega

Imaging data

Click the image to load the interactive plot.

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})\,	10.577	10.680	10.818
{\rm log}_{10}({\rm SFR})	-1.159	-0.162	0.412
{\rm log}_{10}({\rm sSFR})	-11.808	-10.815	-10.205
{\rm stellar\ age}	5.789	6.971	10.569

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.612	-1.199	-0.834
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.562	-0.660	0.131

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.386	0.547	0.708
\delta	-0.884	-0.716	-0.511
\tau_1/\tau_2	0.561	1.002	1.482
Q_{PAH}	0.804	2.645	5.439
U_{min}	3.417	9.389	17.339
{\rm log}_{10}(\gamma_e)\,	-2.666	-1.531	-0.380

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.891	-2.353	-1.435
{\rm log}_{10}(\tau_{AGN})\,	1.099	1.539	1.896

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.104	-0.436	0.074
0.03-0.10 Gyr	-1.761	-0.130	0.529
0.10-0.32 Gyr	-2.408	-0.231	0.529
0.32-1.01 Gyr	-3.189	-0.392	0.472
1.01-3.23 Gyr	-2.237	0.220	0.830
3.23-10.30 Gyr	-0.740	0.783	1.004
10.30-11.44 Gyr	-0.062	1.033	1.993