<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">File Summary:
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FileName      Lrecl    Records    Explanations
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tab1.readme      80         63    This file
tab1.dat        260        316    Table 1: LDN 1688 cloud members
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Byte-by-byte Description of file: tab1.dat
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  Bytes  Format  Units   Label         Explanations
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  1-  2  I2      h       RAH            Right Ascension J2000 (hours)           
  4-  5  I2      min     RAM            Right Ascension J2000 (minutes)         
  7- 11  F5.2    s       RAS            Right Ascension J2000 (seconds)         
 13- 15  I3      deg     DED            Declination J2000 (degrees)             
 17- 18  I2      arcmin  DEM            Declination J2000 (minutes)             
 20- 24  F5.2    arcsec  DES            Declination J2000 (seconds)             
 26- 30  F5.2    mag     Jmag           2MASS J                                 
 32- 36  F5.2    mag     e_Jmag         2MASS e_J (1)                           
 38- 42  F5.2    mag     Hmag           2MASS H                                 
 44- 48  F5.2    mag     e_Hmag         2MASS e_H (1)                           
 50- 54  F5.2    mag     Kmag           2MASS K                                 
 56- 60  F5.2    mag     e_Kmag         2MASS e_K (1)                           
 62- 64  A3      ---     Qflg           2MASS Quality flag                      
 66- 69  I4      ---     SR             Struve &amp; Rudkjobing (1949)              
 71- 74  I4      ---     WSB            Wilking, Schwartz &amp; Blackwell (1987)    
 76- 79  I4      ---     VSSG           Vrba et al. (1975)                      
 81- 84  I4      ---     GY             Greene &amp; Young (1992)                   
 86- 89  I4      ---     HYDRA          Wilking et al. (2005)                   
 91- 94  A4      ---     ISO_Oph        Bontemps et al. (2001)                  
 96- 99  I4      ---     IRAC           Allen et al. (2006)                     
101-119  A19     ---     Other          Other designations (2)                  
121-142  A22     ---     Xray1          Primary X-ray identification (3)        
144-165  A22     ---     Xray2          Secondary X-ray identification (3)      
167-170  A4      ---     IRAC_SED       IRAC SED class                          
172-175  A4      ---     IR_Spec_Index  3.6-24 micron spectral index            
177-195  A19     ---     Opt_Spec_Type  Optical spectral type (4)               
197-229  A33     ---     IR_Spec_Type   Infrared spectral type (5)              
231-260  A30     ---     Assoc_Crit     Criteria for association membership (6) 
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Note (1): NaN (no photometric error) indicates poor quality photometry.
Note (2): from Dolidze &amp; Arakaylen (1959), Chini (1981),
   Bouvier &amp; Appenzeller (1992), Martin et al. (1998),
   Grasdalen, Strom &amp; Strom (1973), Vrba et al. (1976), Elias (1978),
   Wilking &amp; Lada (1983), Wilking, Lada &amp; Young (1989), Comeron et al. (1993),
   Strom, Kepner &amp; Strom (1995), Allen (2002), or Leous et al. (1991).
Note (3): from Montmerle et al. (1983), Casanova et al. (1995),
   Grosso et al. (2000), Martin et al. (1998), Kamata et al. (1997),
   Imanishi et al. (2001), Gagne, Skinner &amp; Daniel (2004),
   N. Grosso or S. Sciortino (2005, private communication).
Note (4): from Cohen &amp; Kuhi (1979), Bouvier &amp; Appenzeller (1992),
   Walter et al. (1994), Luhman, Liebert &amp; Rieke (1997), Martin et al. (1998),
   Wilking (2005), Slesnick (2006).
Note (5): from Greene &amp; Meyer (1995), Greene &amp; Lada (1997), Wilking,
   Greene &amp; Meyer (1999), Luhman &amp; Rieke (1999), Cushing (2000),
   Natta et al. (2002), Wilking, Meyer &amp; Greene (2006).
Note (6): membership based on detected X-ray emission (x),
   strong H-alpha emission (ha), lithium absorption (li),
   location above ZAMS in H-R diagram (ext), or infrared excess in Spitzer
   IRAC band 2 (B2ex), band 4 (B4ex), or in MIPS (Mex).
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