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Chen et al. (2019) Classical Cepheid dataset. Nature Astronomy 2019, 3, 320

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Number of objects
in Chen et al. dataset:		2330

Number of confirmed all 
sky Cepheids (present in 
the OGLE allGalCep.listID
file):				1197

Number of first overtone 
Cepheids (1O) in confirmed
all sky Cepheids:		 153  (153 / 1197 = 12.8%)

** NOTE: 1O Cepheids in Chen at al. (2019) have wrong distances (not
   corrected for P_1O/P_FU)

Number of all sky Cepheids
with wrong periods 
(|Delta P| > 0.04 day):  	 171  (171 / 1197 = 14.3%)		

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OGLE VERIFICATION:

689 objects from the Chen et al. list could have been checked with the
OGLE light curves:

** 419 objects are verified as DCEPs by OGLE Cepheids from the
   allGalCep.listID file

** 116 non_Classical_Cepheids are presented in NON_DCEPs_Part1.list file
   and their light curves are in the Cepheid_Missclassification/Wise_Catalog
   directory

** 154 additional non_Classical_Cepheids are presented in
   NON_DCEPs_Part2.list file and their light curves are in data/ directory
   (among them 52 T2CEP+ACEP, 48 ECL)

** 3 faint objects can be in principle DCEPs but additional verification
   is needed 

SUMMARIZING:

The contamination of the Chen et al. (2019) sample is:

270 NON_DCEPs / 689 verified objects = 39.2%

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Format of NON_DCEPs_Part1.list file:

column (1)	WISE ID 
column (2)	RA (2000) according to Chen et al.
column (3	DEC (2000) according to Chen et al.
column (4)	OGLE ID
column (5)	Period [days]

Format of NON_DCEPs_Part2.list file:

column (1)	Number in the Chen et al. (2019) data file
column (2)	OGLE ID
column (3)	Period [days]
column (4)	RA (2000) according to Chen et al.
column (5)	DEC (2000) according to Chen et al.
column (6)	Wise Catalog ID
column (7)	comment

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