2025ysw

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Information

Transient

Name: AT2025ysw
Right ascension: 1h49m19.03s
Declination: -15d56m27.29s
Discovery Date: Sept. 26, 2025, 12:30 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.012

Host

Name:
Right ascension: 1h49m18.77s
Declination: -15d56m28.70s
Redshift: None
Photometric Redshift: 0.161

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	17.6
Transient MWEBV	processed	0.09
Host match	processed	6.87
Host information	processed	0.11
Host MWEBV	processed	0.04
Global aperture construction	processed	0.64
Global aperture photometry	processed	6.83
Validate global photometry	processed	17.96
Global host SED inference	processed	463.72
Local aperture photometry	processed	6.69
Validate local photometry	no valid phot	0.02
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) = 1h49m19.03s, -15d56m27.29s
semi major axis, semi minor axis (arcsec) = 0.72, 0.72
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) = 1h49m18.76s, -15d56m28.38s
semi major axis, semi minor axis (arcsec) = 6.93, 4.92
angle (degrees, anti-clockwise from east) = -141.77

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	15.79	2.67	20.904	0.183	AB
GALEX_NUV	22.12	2.0	20.538	0.098	AB
SDSS_u	61.29	6.54	19.432	0.116	AB
SDSS_g	120.27	3.35	18.700	0.030	AB
DES_g	131.95	0.4	18.599	0.003	AB
PanSTARRS_g	134.07	1.18	18.582	0.010	AB
SDSS_r	216.99	4.87	18.059	0.024	AB
PanSTARRS_r	213.91	1.81	18.074	0.009	AB
DES_r	222.96	0.58	18.029	0.003	AB
SDSS_i	301.93	7.04	17.700	0.025	AB
PanSTARRS_i	273.78	1.53	17.806	0.006	AB
PanSTARRS_z	318.2	3.25	17.643	0.011	AB
SDSS_z	368.19	19.94	17.485	0.059	AB
DES_z	322.65	2.12	17.628	0.007	AB
PanSTARRS_y	375.53	9.77	17.463	0.028	AB
2MASS_J	261.87	149.27	16.960	0.619	Vega
2MASS_H	182.87	257.08	16.877	1.526	Vega
2MASS_K	522.16	264.93	15.268	0.551	Vega
WISE_W1	186.41	11.57	15.525	0.067	Vega
WISE_W2	135.99	15.13	15.227	0.121	Vega
WISE_W3	248.21	70.42	12.739	0.308	Vega
WISE_W4	1162.4	425.96	9.617	0.398	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})\,	10.363	10.418	10.490
{\rm log}_{10}({\rm SFR})	0.535	0.789	1.013
{\rm log}_{10}({\rm sSFR})	-9.944	-9.638	-9.414
{\rm stellar\ age}	5.718	6.434	7.439

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.131	-0.860	-0.667
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.935	0.234	0.409

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.134	0.196	0.298
\delta	-0.884	-0.658	-0.370
\tau_1/\tau_2	0.584	0.964	1.332
Q_{PAH}	0.331	1.063	2.289
U_{min}	2.558	7.275	14.265
{\rm log}_{10}(\gamma_e)\,	-3.091	-2.344	-1.419

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.245	-3.178	-2.218
{\rm log}_{10}(\tau_{AGN})\,	0.999	1.457	1.892

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.368	0.002	0.232
0.03-0.10 Gyr	0.658	0.930	1.161
0.10-0.32 Gyr	0.014	0.583	0.855
0.32-1.03 Gyr	-0.277	0.242	0.491
1.03-3.29 Gyr	-0.031	0.378	0.604
3.29-10.56 Gyr	0.394	0.583	0.694
10.56-11.74 Gyr	0.206	0.652	1.120