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Description Catalog Data Default Radius (arcmin) Mission Table Type
Cygnus OB2 Association Chandra X-Ray Point Source Catalog cygob2cxoN
1
 CHANDRA Object

1. Enter any constraints on the query below. [ Help on constraint syntax ]

(What about wildcards, spaces, and case sensitivity?)

2. To change the fields that are returned, select the box in the "View" column beside each field desired.

3. To sort the results by any field, select one box in the "Sort" column beside the field to sort on.


 Parameter (Unit) Min Value Max Value Value Type
name CXOCyg J203225.09+411019.6 CXOCyg J203401.44+411905.4 string
ra 20 32 25.09 20 34 01.44 position
dec +41 05 19.68 +41 23 58.23 position
off_axis (arcmin) 0.06 11.38 float
error_radius (arcsec) 0.01 1.02 float
count_rate (ct/s) 0.000058 0.169233 float
hb_count_rate (ct/s) -0.000010 0.047702 float
source_number 1 1003 integer
alt_name [AFM2007] 1 [AFM2007] 999 string
lii (degree) 79.99433 80.33277 float
bii (degree) 0.57986 0.92679 float
snr 1.00 121.01 float
extraction_area (pixel) 2 2070 integer
psf_fraction 0.39 0.91 float
counts (ct) 2 14913 integer
exposure (s) 14388.9 97770.0 float
sb_count_rate (ct/s) -0.000017 0.064017 float
mb_count_rate (ct/s) -0.000006 0.072828 float
median_energy (keV) 0.99 5.29 float
log_prob_constant -4.00 -0.00 float
flare_flag F F string
twomass_name 2MASS J20322545+4108473 2MASS J20340141+4119058 string
cxo_2mass_offset (arcsec) 0.01 3.25 float
jmag (mag) 4.67 17.44 float
jmag_error (mag) 0.01 0.37 float
hmag (mag) 3.51 15.86 float
hmag_error (mag) 0.01 0.26 float
ks_mag (mag) 2.70 15.83 float
ks_mag_error (mag) 0.01 0.36 float
jmag_flag A U string
hmag_flag A U string
ks_mag_flag A U string
vmag_extinction (mag) 0.01 45.95 float
vmag_extinction_flag U U string
fit_log_nh (log(H-atoms/cm^2)) 21.04 23.22 float
fit_log_nh_error (cm^-2) 0.00 1.46 float
fit_apec_kt (keV) 0.11 9.99 float
fit_apec_kt_error (keV) 0.11 9.80 float
fit_log_em (cm^-3) 52.40 57.70 float
fit_reduced_chi2 0.20 2.00 float
fit_dof 1 682 integer

4. Do you want to change your current query settings?


(e.g. 'Cyg X-1' or '12 00 00, 4 12 6')
Use semicolons (;) to separate multiple object names or coordinate pairs (e.g. 'Cyg X-2; 12.235, 15.345').
Default uses the optimum radius for each catalog searched.

Not all tables have observation dates/times. For those that do, the time portion of the date is optional.
Times are always in UTC. Separate multiple dates/ranges with semicolons (;). Range operator is '..'
(e.g. '1992-12-31; 48980.5; 1995-01-15 12:00:00; 1997-03-20 .. 2000-10-18').
rows
Select to display all catalog parameters instead of only defaults.

5.


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