2025alsa

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Information

Transient

Name: AT2025alsa
Right ascension: 16h56m05.51s
Declination: 4d31m32.77s
Discovery Date: Aug. 20, 2025, 6:37 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.085

Host

Name:
Right ascension: 16h56m05.48s
Declination: 4d31m33.39s
Redshift: None
Photometric Redshift: 0.069
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 6.26
Transient MWEBV processed 0.04
Host match processed 5.06
Host information processed 0.11
Host MWEBV processed 0.06
Global aperture construction processed 2.41
Global aperture photometry processed 5.5
Validate global photometry processed 13.77
Global host SED inference processed 403.08
Local aperture photometry processed 5.58
Validate local photometry processed 0.02
Local host SED inference processed 420.6
 

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) = 16h56m05.51s, 4d31m32.77s
semi major axis, semi minor axis (arcsec) = 1.53, 1.53
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_g 14.08 0.17 21.028 0.013 AB
PanSTARRS_g 12.9 0.36 21.123 0.031 AB
PanSTARRS_r 22.05 0.47 20.541 0.023 AB
DES_r 25.57 0.34 20.381 0.015 AB
PanSTARRS_i 30.26 0.44 20.198 0.016 AB
PanSTARRS_z 35.32 1.02 20.030 0.031 AB
DES_z 36.97 1.03 19.980 0.030 AB
PanSTARRS_y 37.34 2.61 19.969 0.076 AB

Aperture details

RA, DEC (J2000) = 16h56m05.48s, 4d31m33.48s
semi major axis, semi minor axis (arcsec) = 9.12, 7.03
angle (degrees, anti-clockwise from east) = -32.29

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_g 63.14 0.57 19.399 0.010 AB
PanSTARRS_g 69.21 1.89 19.300 0.030 AB
PanSTARRS_r 104.99 2.43 18.847 0.025 AB
DES_r 108.0 1.06 18.816 0.011 AB
PanSTARRS_i 161.77 2.25 18.378 0.015 AB
PanSTARRS_z 196.85 5.28 18.165 0.029 AB
DES_z 155.06 2.96 18.424 0.021 AB
PanSTARRS_y 248.19 13.6 17.913 0.060 AB
2MASS_J 424.48 219.91 16.435 0.562 Vega
2MASS_H 454.39 349.29 15.889 0.835 Vega
2MASS_K 809.45 363.02 14.792 0.487 Vega
WISE_W1 133.34 20.74 15.889 0.169 Vega
WISE_W2 67.89 23.55 15.982 0.377 Vega
WISE_W3 -4.84 90.09 Vega
 

Imaging data

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Spectral Energy Distribution

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Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.603 8.762 8.893
{\rm log}_{10}({\rm SFR}) -2.161 -1.513 -0.906
{\rm log}_{10}({\rm sSFR}) -10.995 -10.329 -9.638
{\rm stellar\ age} 3.126 5.882 7.296

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.656 -1.133 -0.601
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.679 -0.737 0.227

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.168 0.468 0.919
\delta -0.593 -0.209 0.152
\tau_1/\tau_2 0.689 1.059 1.420
Q_{PAH} 1.320 3.441 5.651
U_{min} 2.950 7.851 14.991
{\rm log}_{10}(\gamma_e)\, -2.846 -1.787 -0.631

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.791 -0.488 0.026
{\rm log}_{10}(\tau_{AGN})\, 1.048 1.427 1.949

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.450 -1.755 -1.263
0.03-0.10 Gyr -2.341 -1.501 -0.827
0.10-0.33 Gyr -2.092 -1.314 -0.618
0.33-1.08 Gyr -1.839 -1.110 -0.699
1.08-3.53 Gyr -1.696 -1.096 -0.861
3.53-11.56 Gyr -1.939 -1.221 -0.962
11.56-12.85 Gyr -2.199 -1.293 -0.774

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.501 9.603 9.712
{\rm log}_{10}({\rm SFR}) -0.731 -0.352 0.030
{\rm log}_{10}({\rm sSFR}) -10.347 -9.946 -9.533
{\rm stellar\ age} 6.593 7.688 9.923

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.225 -0.760 -0.406
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.501 -0.026 0.206

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.233 0.446 0.704
\delta -0.420 -0.055 0.243
\tau_1/\tau_2 0.738 1.127 1.550
Q_{PAH} 0.543 1.587 3.608
U_{min} 2.725 7.477 14.375
{\rm log}_{10}(\gamma_e)\, -2.984 -1.721 -0.707

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.719 -2.215 -1.246
{\rm log}_{10}(\tau_{AGN})\, 1.053 1.455 1.888

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.624 -0.451 -0.267
0.03-0.10 Gyr -0.883 -0.316 0.137
0.10-0.33 Gyr -1.456 -0.756 -0.314
0.33-1.08 Gyr -1.656 -0.958 -0.539
1.08-3.53 Gyr -1.481 -0.746 -0.361
3.53-11.56 Gyr -0.663 -0.289 -0.128
11.56-12.85 Gyr -0.602 -0.075 0.579