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South Pole Telescope (SPT)

Product Name
2020 Point Source Catalog
Mission
SPT

Description

This page provides data products associated with the point-source catalog from 2530 square degrees of SPT data described in Everett et al. (2020). Linked below are the full three-band source catalog (down to a significance threshold of 4.5 sigma), the differential number counts in each band---total and divided into synchrotron- and dust-dominated counts---and the cumulative number counts in each band.


Catalog

Column descriptions from Everett et al. 2020:

1. Source ID: the IAU designation for the SPT-detected source.
2. RA: right ascension (J2000) in degrees.
3. DEC: declination (J2000) in degrees.
4. S/N (95 GHz): detection significance (signal-to-noise ratio) in the 95 GHz band.
5. Sraw (95 GHz): raw flux (uncorrected for flux boosting) in the 95 GHz band.
6. Sbest (95 GHz): median value of de-boosted flux at 95 GHz.
7. dSup (95 GHz): upper error bar (1-sigma normal equivalent) of de-boosted flux at 95 GHz.
8. dSdown (95 GHz): lower error bar (1-sigma normal equivalent) of de-boosted flux at 95 GHz.
9. S/N (150 GHz): detection significance (signal-to-noise ratio) in the 150 GHz band.
10. Sraw (150 GHz): raw flux (uncorrected for flux boosting) in the 150 GHz band.
11. Sbest (150 GHz): median value of de-boosted flux at 150 GHz.
12. dSup (150 GHz): upper error bar (1-sigma normal equivalent) of de-boosted flux at 150 GHz.
13. dSdown (150 GHz): lower error bar (1-sigma normal equivalent) of de-boosted flux at 150 GHz.
14. S/N (220 GHz): detection significance (signal-to-noise ratio) in the 150 GHz band.
15. Sraw (220 GHz): raw flux (uncorrected for flux boosting) in the 220 GHz band.
16. Sbest (220 GHz): median value of de-boosted flux at 220 GHz.
17. dSup (220 GHz): upper error bar (1-sigma normal equivalent) of de-boosted flux at 220 GHz.
18. dSdown (220 GHz): lower error bar (1-sigma normal equivalent) of de-boosted flux at 220 GHz
19. alpha95-150raw: estimate (from the raw flux in each band) of the 95 GHz-150 GHz spectral index alpha
20. alpha95-150best: median value of spectral index.
21. d_alpha95-150up: upper error bar (1-sigma normal equivalent) of spectral index.
22. d_alpha95-150down: lower error bar (1-sigma normal equivalent) of spectral index.
23. alpha150-220raw: estimate (from the raw flux in each band) of the 150 GHz-220 GHz spectral index alpha
24. alpha150-220best: median value of spectral index.
25. d_alpha150-220up: upper error bar (1-sigma normal equivalent) of spectral index 27. P(alpha > 1.51): fraction of the spectral index posterior probability distribution above the threshold value of 1.51. A higher value of P means the source is more likely to be dust-dominated.
28. Type: source classification ((sync)hrotron- or (dust)-dominated).
29. External counterparts: (1): SUMSS, (2): IRAS, (3): AT20G, (4): WISE, (5): PMN, (6): AKARI/FIS, (7): AKARI/IRC, (8): RASS
30. Extended flag: flag for extended sources.
31. Redshift: cross-matched redshift from NED, if available.
32. Cut selection: (1): Ext cut, (2): z cut, (3): SMG list, (4): stars

If you have any questions regarding this data set or its use please contact Wendy Everett (wendeline.everett_at_colorado.edu).


Differential Source Counts at 95 GHz

1. Flux range [low]: Low end of flux bin in which counts were estimated. In units of Jy.
2. Flux range [high]: High end of flux bin in which counts were estimated. In units of Jy.
3. dN/dS total no cuts, central: Central value of differential counts (in units of number per square degree per Jy) for all sources detected at 95 GHz.
4. dN/dS total no cuts, lower error bar: 1-sigma lower error bar for differential counts (in units of number per square degree per Jy) for all sources detected at 95 GHz.
5. dN/dS total no cuts, upper error bar: 1-sigma upper error bar for differential counts (in units of number per square degree per Jy) for all sources detected at 95 GHz.
6. dN/dS synchrotron z cut, central: Same as [3] for synchrotron-dominated sources detected at 95 GHz.
7. dN/dS synchrotron z cut, lower error bar: Same as [4] for synchrotron-dominated sources detected at 95 GHz.
8. dN/dS synchrotron z cut, upper error bar: Same as [5] for synchrotron-dominated sources detected at 95 GHz.
9. dN/dS dust z cut, central: Same as [3] for dust-dominated sources detected at 95 GHz.
10. dN/dS dust z cut, lower error bar: Same as [4] for dust-dominated sources detected at 95 GHz.
11. dN/dS dust z cut, upper error bar: Same as [5] for dust-dominated sources detected at 95 GHz.
12. Completeness: Average value of completeness across the flux range given by [1] and [2].

If you have any questions regarding this data set or its use please contact Wendy Everett (wendeline.everett_at_colorado.edu).


Differential Source Counts at 150 GHz

1. Flux range [low]: Low end of flux bin in which counts were estimated. In units of Jy.
2. Flux range [high]: High end of flux bin in which counts were estimated. In units of Jy.
3. dN/dS total no cuts, central: Central value of differential counts (in units of number per square degree per Jy) for all sources detected at 150 GHz.
4. dN/dS total no cuts, lower error bar: 1-sigma lower error bar for differential counts (in units of number per square degree per Jy) for all sources detected at 150 GHz.
5. dN/dS total no cuts, upper error bar: 1-sigma upper error bar for differential counts (in units of number per square degree per Jy) for all sources detected at 150 GHz.
6. dN/dS synchrotron z cut, central: Same as [3] for synchrotron-dominated sources detected at 150 GHz.
7. dN/dS synchrotron z cut, lower error bar: Same as [4] for synchrotron-dominated sources detected at 150 GHz.
8. dN/dS synchrotron z cut, upper error bar: Same as [5] for synchrotron-dominated sources detected at 150 GHz.
9. dN/dS dust z cut, central: Same as [3] for dust-dominated sources detected at 150 GHz.
10. dN/dS dust z cut, lower error bar: Same as [4] for dust-dominated sources detected at 150 GHz.
11. dN/dS dust z cut, upper error bar: Same as [5] for dust-dominated sources detected at 150 GHz.
12. dN/dS SMG, central: Same as [3] for SMG list sources detected at 150 GHz.
13. dN/dS SMG, lower error bar: Same as [4] for SMG list sources detected at 150 GHz.
14. dN/dS SMG, upper error bar: Same as [5] for SMG list sources detected at 150 GHz.
15. Completeness: Average value of completeness across the flux range given by [1] and [2].

If you have any questions regarding this data set or its use please contact Wendy Everett (wendeline.everett_at_colorado.edu).


Differential Source Counts at 220 GHz

1. Flux range [low]: Low end of flux bin in which counts were estimated. In units of Jy.
2. Flux range [high]: High end of flux bin in which counts were estimated. In units of Jy.
3. dN/dS total no cuts, central: Central value of differential counts (in units of number per square degree per Jy) for all sources detected at 220 GHz.
4. dN/dS total no cuts, lower error bar: 1-sigma lower error bar for differential counts (in units of number per square degree per Jy) for all sources detected at 220 GHz.
5. dN/dS total no cuts, upper error bar: 1-sigma upper error bar for differential counts (in units of number per square degree per Jy) for all sources detected at 220 GHz.
6. dN/dS synchrotron z cut, central: Same as [3] for synchrotron-dominated sources detected at 220 GHz.
7. dN/dS synchrotron z cut, lower error bar: Same as [4] for synchrotron-dominated sources detected at 220 GHz.
8. dN/dS synchrotron z cut, upper error bar: Same as [5] for synchrotron-dominated sources detected at 220 GHz.
9. dN/dS dust z cut, central: Same as [3] for dust-dominated sources detected at 220 GHz.
10. dN/dS dust z cut, lower error bar: Same as [4] for dust-dominated sources detected at 220 GHz.
11. dN/dS dust z cut, upper error bar: Same as [5] for dust-dominated sources detected at 220 GHz.
12. dN/dS SMG, central: Same as [3] for SMG list sources detected at 220 GHz.
13. dN/dS SMG, lower error bar: Same as [4] for SMG list sources detected at 220 GHz.
14. dN/dS SMG, upper error bar: Same as [5] for SMG list sources detected at 220 GHz.
15. Completeness: Average value of completeness across the flux range given by [1] and [2].

If you have any questions regarding this data set or its use please contact Wendy Everett (wendeline.everett_at_colorado.edu).


Cumulative Source Counts at 95 GHz

1. Flux range [low]: Low end of flux bin in which counts were estimated. In units of Jy.
2. Flux range [high]: High end of flux bin in which counts were estimated. In units of Jy.
3. N(>S) total no cuts, central: Central value of cumulative counts (in units of number per square degree) for all sources detected at 95 GHz.
4. N(>S) total no cuts, lower error bar: 1-sigma lower error bar for cumulative counts (in units of number per square degree) for all sources detected at 95 GHz.
5. N(>S) total no cuts, upper error bar: 1-sigma upper error bar for cumulative counts (in units of number per square degree) for all sources detected at 95 GHz.
6. N(>S) synchrotron z cut, central: Same as [3] for synchrotron-dominated sources detected at 95 GHz.
7. N(>S) synchrotron z cut, lower error bar: Same as [4] for synchrotron-dominated sources detected at 95 GHz.
8. N(>S) synchrotron z cut, upper error bar: Same as [5] for synchrotron-dominated sources detected at 95 GHz.
9. N(>S) dust z cut, central: Same as [3] for dust-dominated sources detected at 95 GHz.
10. N(>S) dust z cut, lower error bar: Same as [4] for dust-dominated sources detected at 95 GHz.
11. N(>S) dust z cut, upper error bar: Same as [5] for dust-dominated sources detected at 95 GHz.

If you have any questions regarding this data set or its use please contact Wendy Everett (wendeline.everett_at_colorado.edu).


Cumulative Source Counts at 150 GHz

1. Flux range [low]: Low end of flux bin in which counts were estimated. In units of Jy.
2. Flux range [high]: High end of flux bin in which counts were estimated. In units of Jy.
3. N(>S) total no cuts, central: Central value of cumulative counts (in units of number per square degree) for all sources detected at 150 GHz.
4. N(>S) total no cuts, lower error bar: 1-sigma lower error bar for cumulative counts (in units of number per square degree) for all sources detected at 150 GHz.
5. N(>S) total no cuts, upper error bar: 1-sigma upper error bar for cumulative counts (in units of number per square degree) for all sources detected at 150 GHz.
6. N(>S) synchrotron z cut, central: Same as [3] for synchrotron-dominated sources detected at 150 GHz.
7. N(>S) synchrotron z cut, lower error bar: Same as [4] for synchrotron-dominated sources detected at 150 GHz.
8. N(>S) synchrotron z cut, upper error bar: Same as [5] for synchrotron-dominated sources detected at 150 GHz.
9. N(>S) dust z cut, central: Same as [3] for dust-dominated sources detected at 150 GHz.
10. N(>S) dust z cut, lower error bar: Same as [4] for dust-dominated sources detected at 150 GHz.
11. N(>S) dust z cut, upper error bar: Same as [5] for dust-dominated sources detected at 150 GHz.
12. N(>S) SMG, central: Same as [3] for SMG list sources detected at 150 GHz.
13. N(>S) SMG, lower error bar: Same as [4] for SMG list sources detected at 150 GHz., excluding IRAS-FSC counterparts.

If you have any questions regarding this data set or its use please contact Wendy Everett (wendeline.everett_at_colorado.edu).


Cumulative Source Counts at 220 GHz

1. Flux range [low]: Low end of flux bin in which counts were estimated. In units of Jy.
2. Flux range [high]: High end of flux bin in which counts were estimated. In units of Jy.
3. N(>S) total no cuts, central: Central value of cumulative counts (in units of number per square degree) for all sources detected at 220 GHz.
4. N(>S) total no cuts, lower error bar: 1-sigma lower error bar for cumulative counts (in units of number per square degree) for all sources detected at 220 GHz.
5. N(>S) total no cuts, upper error bar: 1-sigma upper error bar for cumulative counts (in units of number per square degree) for all sources detected at 220 GHz.
6. N(>S) synchrotron z cut, central: Same as [3] for synchrotron-dominated sources detected at 220 GHz.
7. N(>S) synchrotron z cut, lower error bar: Same as [4] for synchrotron-dominated sources detected at 220 GHz.
8. N(>S) synchrotron z cut, upper error bar: Same as [5] for synchrotron-dominated sources detected at 220 GHz.
9. N(>S) dust z cut, central: Same as [3] for dust-dominated sources detected at 220 GHz.
10. N(>S) dust z cut, lower error bar: Same as [4] for dust-dominated sources detected at 220 GHz.
11. N(>S) dust z cut, upper error bar: Same as [5] for dust-dominated sources detected at 220 GHz.
12. N(>S) SMG, lower error bar: Same as [4] for SMG list sources detected at 220 GHz.
13. N(>S) SMG, upper error bar: Same as [5] for SMG list sources detected at 220 GHz.

If you have any questions regarding this data set or its use please contact Wendy Everett (wendeline.everett_at_colorado.edu).


Covariance Matrices for Number Counts

We provide covariance matrices for synchrotron-dominated number counts and SMG number counts from Everett et al. (2020). Files are available at LAMBDA

E20_SPT-SZ_PS_95GHz_sync_cov.dat
E20_SPT-SZ_PS_150GHz_sync_cov.dat
E20_SPT-SZ_PS_220GHz_sync_cov.dat
E20_SPT-SZ_PS_150GHz_dust_cov.dat
E20_SPT-SZ_PS_220GHz_dust_cov.dat

Additional Details:

  • The information on this page is taken from this SPT page.

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