2025gnb

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Information

Transient

Name: AT2025gnb
Right ascension: 7h46m40.62s
Declination: 17d34m13.10s
Discovery Date: April 2, 2025, 6:46 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.031

Host

Name: 2025gnb
Right ascension: 7h46m42.01s
Declination: 17d34m21.11s
Redshift: None
Photometric Redshift: 0.169
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 2.66
Cutout download processed 19.27
Global aperture construction processed 0.7
Local aperture photometry processed 6.97
Global aperture photometry processed 6.85
Validate local photometry no valid phot 0.03
Validate global photometry processed 19.39
Host information processed 0.09
Global host SED inference processed 513.28
Local host SED inference not processed None
Transient information processed 0.0
Transient MWEBV processed 0.13
Host MWEBV processed 0.07
Log transient processing status blocked 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) = 7h46m40.62s, 17d34m13.10s
semi major axis, semi minor axis (arcsec) = 0.69, 0.69
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys

Aperture details

RA, DEC (J2000) = 7h46m42.00s, 17d34m21.37s
semi major axis, semi minor axis (arcsec) = 4.13, 3.81
angle (degrees, anti-clockwise from east) = -173.19

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 7.4 1.78 21.727 0.261 AB
GALEX_NUV 9.26 1.63 21.484 0.192 AB
SDSS_u 58.55 3.46 19.481 0.064 AB
SDSS_g 126.71 3.11 18.643 0.027 AB
DES_g 129.45 0.5 18.620 0.004 AB
PanSTARRS_g 127.78 1.27 18.634 0.011 AB
SDSS_r 206.33 4.02 18.114 0.021 AB
PanSTARRS_r 208.39 0.85 18.103 0.004 AB
DES_r 224.35 1.21 18.023 0.006 AB
SDSS_i 277.0 5.04 17.794 0.020 AB
PanSTARRS_i 277.1 1.67 17.793 0.007 AB
PanSTARRS_z 315.78 4.3 17.652 0.015 AB
SDSS_z 365.93 12.83 17.492 0.038 AB
DES_z 337.21 2.7 17.580 0.009 AB
PanSTARRS_y 327.98 7.14 17.610 0.024 AB
2MASS_J 425.72 123.85 16.432 0.316 Vega
2MASS_H 236.99 178.98 16.596 0.820 Vega
2MASS_K 782.16 189.4 14.829 0.263 Vega
WISE_W1 189.01 11.83 15.510 0.068 Vega
WISE_W2 130.68 16.67 15.270 0.139 Vega
WISE_W3 343.45 67.74 12.386 0.214 Vega
WISE_W4 503.69 445.8 10.525 0.961 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.278 10.406 10.567
{\rm log}_{10}({\rm SFR}) -0.136 0.827 1.304
{\rm log}_{10}({\rm sSFR}) -10.581 -9.576 -9.059
{\rm stellar\ age} 2.768 5.306 7.237

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.724 -1.279 -0.915
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.518 -0.052 0.388

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.242 0.351 0.497
\delta -0.834 -0.598 -0.316
\tau_1/\tau_2 0.414 0.850 1.305
Q_{PAH} 0.404 1.177 2.647
U_{min} 2.833 8.210 16.016
{\rm log}_{10}(\gamma_e)\, -3.225 -2.411 -1.340

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.220 -2.982 -1.982
{\rm log}_{10}(\tau_{AGN})\, 0.999 1.473 1.920

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.420 -0.710 -0.042
0.03-0.10 Gyr -0.034 0.981 1.466
0.10-0.32 Gyr -0.842 0.776 1.210
0.32-1.02 Gyr -1.939 0.351 0.824
1.02-3.28 Gyr -0.733 0.580 0.973
3.28-10.48 Gyr -0.939 0.351 0.686
10.48-11.64 Gyr -1.159 0.340 1.265