SPICY Catalog Definitions
Overview
The Spitzer/IRAC Candidate YSO (SPICY) Catalog consists of ~120,000 Spitzer/IRAC candidate young stellar objects (YSOs) based on surveys of the Galactic midplane between l ~ 255d and 110d, including the GLIMPSE I, II, and 3D, Vela-Carina, Cygnus X, and SMOG surveys (613 square degrees), augmented by near-infrared catalogs.
If you use SPICY data, please reference Kuhn et al. (2021).
| Name |
Intype |
Units |
Description |
| SPICY |
long |
|
Candidate YSO designation |
| ra |
double |
deg |
Right Ascension (ICRS) |
| dec |
double |
deg |
Declination (ICRS) |
| l |
double |
deg |
Galactic longitude |
| b |
double |
deg |
Galactic latitude |
| p1 |
float |
|
YSO random forest score from IRAC+2MASS photometry |
| p2 |
float |
|
YSO random forest score from IRAC+UKIDSS photometry |
| p3 |
float |
|
YSO random forest score from IRAC+VVV photometry |
| class |
char |
|
YSO class |
| silicate |
int |
|
Flag for possible strong silicate feature |
| pah |
int |
|
Flag for possible strong PAH feature |
| alpha |
double |
|
Spectral index used for YSO class |
| alpha_8 |
double |
|
Spectral index derived from the [4.5]-[8.0] color |
| alpha_24 |
double |
|
Spectral index derived from the [4.5]-[24] color |
| alpha_w4 |
double |
|
Spectral index derived from the [4.5]-W4 color |
| env |
char |
|
Classification of the YSO environment |
| grp |
char |
|
HDBSCAN gruop to which the star is assigned |
| var |
int |
|
ZTF light-curve variability flag |
| nr |
int |
|
Number of good ZTF r-band observations used |
| r |
double |
mag |
ZTF mean magnitude in the r-band |
| sigmar |
double |
mag |
ZTF light-curve standard deviation in the r-band |
| skewnessr |
double |
|
ZTF light-curve skew in the r-band |
| Spitzer |
char |
|
Spitzer source designation |
| mag3_6 |
float |
mag |
Spitzer/IRAC channel 1 magnitude |
| e_mag3_6 |
float |
mag |
Error on Spitzer/IRAC channel 1 magnitude |
| mag4_5 |
float |
mag |
Spitzer/IRAC channel 2 magnitude |
| e_mag4_5 |
float |
mag |
Error on Spitzer/IRAC channel 2 magnitude |
| mag5_8 |
float |
mag |
Spitzer/IRAC channel 3 magnitude |
| e_mag5_8 |
float |
mag |
Error on Spitzer/IRAC channel 3 magnitude |
| mag8_0 |
float |
mag |
Spitzer/IRAC channel 4 magnitude |
| e_mag8_0 |
float |
mag |
Error on Spitzer/IRAC channel 4 magnitude |
| csf |
int |
|
Close source flag |
| m3_6 |
int |
|
Number of detections in the 3.6 micron band |
| m4_5 |
int |
|
Number of detections in the 4.5 micron band |
| m5_8 |
int |
|
Number of detections in the 5.8 micron band |
| m8_0 |
int |
|
Number of detections in the 8.0 micron band |
| TWOMASS |
char |
|
2MASS source designation |
| UKIDSS |
char |
|
UKIDSS source designation |
| VIRAC |
int |
|
VIRAC source designation |
| GaiaDR2 |
long |
|
Gaia DR2 source designation |
| MIPS |
char |
|
Spitzer/MIPS source designation |
| AllWISE |
char |
|
AllWISE source designation |
| ZTFDR3 |
long |
|
ZTF DR3 source designation |