SAGE-Var Full Catalog Description

Overview

SAGE-Var is a follow-up to the SAGE and SAGE-SMC Legacy programs. The SAGE-Var program obtained 4 epochs of photometry at 3.6 and 4.5 microns covering the bar of the Large Magellanic Cloud (LMC) and the central region of the Small Magellanic Cloud (SMC) in order to probe the variability of extremely red sources missed by variability surveys conducted at shorter wavelengths, and to provide additional epochs of observation for known variables. The 6 total epochs of observations probe infrared variability on 15 different timescales ranging from 20 days to 5 years.

If you use these catalogs, please cite Riebel et al. (2015).

Name Intype Units Description
desig char none Source IRAC Designation
ra real deg Right Ascension, J2000
dec real deg Declination, J2000
e1_36 real Jy Epoch 1 flux in [3.6] band
e1_36_u real Jy Uncertainty in Epoch 1 [3.6] flux
e2_36 real Jy Epoch 2 flux in [3.6] band
e2_36_u real Jy Uncertainty in Epoch 2 [3.6] flux
e3_36 real Jy Epoch 3 flux in [3.6] band
e3_36_u real Jy Uncertainty in Epoch 3 [3.6] flux
e4_36 real Jy Epoch 4 flux in [3.6] band
e4_36_u real Jy Uncertainty in Epoch 4 [3.6] flux
e5_36 real Jy Epoch 5 flux in [3.6] band
e5_36_u real Jy Uncertainty in Epoch 5 [3.6] flux
e6_36 real Jy Epoch 6 flux in [3.6] band
e6_36_u real Jy Uncertainty in Epoch 6 [3.6] flux
e1_45 real Jy Epoch 1 flux in [4.5] band
e1_45_u real Jy Uncertainty in Epoch 1 [4.5] flux
e2_45 real Jy Epoch 2 flux in [4.5] band
e2_45_u real Jy Uncertainty in Epoch 2 [4.5] flux
e3_45 real Jy Epoch 3 flux in [4.5] band
e3_45_u real Jy Uncertainty in Epoch 3 [4.5] flux
e4_45 real Jy Epoch 4 flux in [4.5] band
e4_45_u real Jy Uncertainty in Epoch 4 [4.5] flux
e5_45 real Jy Epoch 5 flux in [4.5] band
e5_45_u real Jy Uncertainty in Epoch 5 [4.5] flux
e6_45 real Jy Epoch 6 flux in [4.5] band
e6_45_u real Jy Uncertainty in Epoch 6 [4.5] flux
mean_36 real Jy Mean [3.6] flux
mean_36_u real Jy RMS Uncertainty in mean [3.6] flux
mean_45 real Jy Mean [4.5] flux
mean_45_u real Jy RMS Uncertainty in mean [4.5] flux
var_36_1 real none Variability index at [3.6] for interval 1
Variability index is defined as the number of standard deviations by which two epochs differ in brightness.
Table 5 of Riebel et al. (2015) defines the intervals.
var_36_2 real none Variability index at [3.6] for interval 2
var_36_3 real none Variability index at [3.6] for interval 3
var_36_4 real none Variability index at [3.6] for interval 4
var_36_5 real none Variability index at [3.6] for interval 5
var_36_6 real none Variability index at [3.6] for interval 6
var_36_7 real none Variability index at [3.6] for interval 7
var_36_8 real none Variability index at [3.6] for interval 8
var_36_9 real none Variability index at [3.6] for interval 9
var_36_10 real none Variability index at [3.6] for interval 10
var_36_11 real none Variability index at [3.6] for interval 11
var_36_12 real none Variability index at [3.6] for interval 12
var_36_13 real none Variability index at [3.6] for interval 13
var_36_14 real none Variability index at [3.6] for interval 14
var_36_15 real none Variability index at [3.6] for interval 15
var_45_1 real none Variability index at [4.5] for interval 1
var_45_2 real none Variability index at [4.5] for interval 2
var_45_3 real none Variability index at [4.5] for interval 3
var_45_4 real none Variability index at [4.5] for interval 4
var_45_5 real none Variability index at [4.5] for interval 5
var_45_6 real none Variability index at [4.5] for interval 6
var_45_7 real none Variability index at [4.5] for interval 7
var_45_8 real none Variability index at [4.5] for interval 8
var_45_9 real none Variability index at [4.5] for interval 9
var_45_10 real none Variability index at [4.5] for interval 10
var_45_11 real none Variability index at [4.5] for interval 11
var_45_12 real none Variability index at [4.5] for interval 12
var_45_13 real none Variability index at [4.5] for interval 13
var_45_14 real none Variability index at [4.5] for interval 14
var_45_15 real none Variability index at [4.5] for interval 15
ogle_id char none ID From the OGLE-III Catalog of Variable Stars
ogle_class char none Classification from the OGLE-III CVS
ogle_per real days Variability period from the OGLE-III CVS
macho_id char none ID from the MACHO survey
macho_per real days Variability period from the MACHO survey
grams_class char none Classification of best fitting GRAMS model (C or O)
yso_class char none `Y' if a source is classified as a YSO candidat