Some notes on the JSDC V2 released to ESO on april 2014 - V2014-04-23
Files and additional stuff:
- the fits file with limited columns and associated records with initial column set under votable file format
- additional "unordered" stuff with more data and logs
- simbad otypes black list
Main changes:
- new color relations fitted on 195 stars (SNR>20, residuals < 5 sigma)
- refined filtering:
- -0.5 < Av < 3
- chi2 < 25 for av/dist, distance modulus & diameters
- modified e_LDD: diameter error corrected by LDD_chi2: Error on limb-darkened diameter (= weighted mean diameter error x SQRT(chi2) if chi2 > 1)
- removed useless LDD_quality column (former max_residuals on diameters)
- filtering uses all simbad otypes
Numbers
- input : 95482 stars from HIP2
- output : 74470 stars
Filtering stage
| time | step | desc | #columns | #rows |
|---|---|---|---|---|
| 2014-04-22T19-08-23 | Step 0 (catalog.vot -> catalog0.fits) | Convert raw VOTable catalog to FITS ... | 183 | 95482 |
| 2014-04-22T19-08-37 | Step 1 (catalog0.fits -> catalog1.fits) | Keep stars with diamFlag==1 ... | 183 | 87728 |
| 2014-04-22T19-08-41 | Step 2 (catalog1.fits -> catalog2.fits) | Rejecting stars with SB9 references ... | 183 | 86259 |
| 2014-04-22T19-08-45 | Step 3 (catalog2.fits -> catalog3.fits) | Rejecting stars with WDS references ... | 183 | 79501 |
| 2014-04-22T19-08-48 | Step 4 (catalog3.fits -> catalog4.fits) | Rejecting stars with MultFlag=S ... | 183 | 79178 |
| 2014-04-22T19-08-52 | Step 5 (catalog4.fits -> catalog5.fits) | Rejecting badcal stars ... | 183 | 79112 |
| 2014-04-22T19-08-57 | Step 6 (catalog5.fits -> catalog6.fits) | Rejecting stars with bad simbad otypes ... | 183 | 74470 |
| 2014-04-22T19-09-42 | Step 7 (catalog6.fits -> catalog7.fits) | Adding the 'Name' column to use one simbad script ... | 184 | 74470 |
| 2014-04-22T19-09-46 | Step 8 (catalog7.fits -> catalog8.fits) | Flagging duplicated Name entries ... | 184 | 74470 |
| 2014-04-22T19-09-48 | Step 9 (catalog8.fits -> catalog9.fits) | Renaming column from | 184 | 74470 |
| 2014-04-22T19-09-52 | Step 10 (catalog9.fits -> catalog10.fits) | Keeping final columns set | 62 | 74470 |
| 2014-04-22T19-09-54 | Step 11 (catalog10.fits -> catalog11.fits) | Clean useless params of catalog ... | 62 | 74470 |
Comparison vs JSDC V1:
- http://apps.jmmc.fr/~sclcat/JSDC_supplementary/jsdc_2014_04_23/DIFF_JSDC_V1.fits_jsdc-SVN20140422.fits/
- 5269 JSDC V1 not retrieved
- 41267 new ones
Comparison vs Bright star catalog
- BSC contains 9110 rows (a small fraction describes multiple systems)
- 9016 entries are included in HIP2, +250 of them have not been retained in the original list for JSDC V2 because of error on the plx
- 8727 (96%) BSC stars have been processed when constructing the JSDC but only 4836 (53%) get a robust diameter
- 1237 haven't good enough information to compute a robust diameter
- 1564 have been rejected for multiplicity
- 1047 have been rejected for bad object types
- others are rejected by badcal
Comparison vs Borde Merand TODO
Improvment space
- ~15 stars remain in this catalog which are probably binaries because included in TDS with a separation measure < 5 arc
Edit | Attach | Topic revision: r1 - 2014-04-24 - GuillaumeMella
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