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J/A+A/518/A1      Galactic massive stars with AstraLux    (Maiz Apellaniz, 2010)

High-resolution imaging of Galactic massive stars with AstraLux: I. 138 fields with delta > -25 degrees. Maiz Apellaniz J. <Astron. Astrophys. 518, A1 (2010)> =2010A&A...518A...1M
ADC_Keywords: Stars, double and multiple ; Stars, O ; Stars, Wolf-Rayet ; Magnitudes ; Photometry, SDSS Keywords: techniques: high angular resolution - surveys - astrometry - binaries: visual - stars: early type - stars: massive Abstract: Massive stars have high-multiplicity fractions, and many of them have still undetected components, thus hampering the study of their properties. I study a sample of massive stars with high angular resolution to better characterize their multiplicity. I observed 138 fields that include at least one massive star with AstraLux, a lucky imaging camera at the 2.2m Calar Alto telescope. I also used observations of 3 of those fields with ACS/HRC on HST to obtain complementary information and to calibrate the AstraLux data. The results were compared with existing information from the Washington Double Star Catalog, Tycho-2, 2MASS, and other literature results. Description: File table2 contains the ACS/HRC measurements and file table3 the AstraLux measurements. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 74 15 List and properties of the detected pairs in the ACS/HRC data table3.dat 105 142 List and properties of the detected pairs in the AstraLux data
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 17 A17 --- Name System name 19- 24 A6 --- Filt Filter used for observations 26- 30 A5 --- m_Name Pair identification within system 32- 39 F8.2 d MJD Modified Julian Date of the observation 41- 46 F6.3 arcsec Sep Separation 48- 52 F5.3 arcsec e_Sep rms uncertainty in separation 54- 59 F6.2 deg PA Orientation 61- 64 F4.2 deg e_PA rms uncertainty in orientation 66- 69 F4.2 mag dmag Magnitude difference 71- 74 F4.2 mag e_dmag rms uncertainty in magnitude difference
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 17 A17 --- Name System name 19- 28 A10 --- WDS Washington Double Star (B/wds) identification 30- 34 A5 --- m_WDS Pair identification within system 36- 43 F8.2 d MJD Modified Julian Date of the observation 45- 50 F6.3 arcsec Sep Separation of the components 52- 56 F5.3 arcsec e_Sep rms uncertainty in separation 58- 63 F6.2 deg PA Orientation (N to E) 65- 68 F4.2 deg e_PA rms uncertainty in orientation 70 A1 --- f_WDS [y/n] Pair in WDS? (yes/no) 72 A1 --- u_dVT [a] Quality flag (1) 74- 78 F5.2 mag dVT ?=- Tycho-2 V magnitude difference 80- 84 F5.2 mag dz SDSS z magnitude difference (AstraLux) 86- 89 F4.2 mag e_dz rms uncertainty in SDSS z magnitude difference 91 A1 --- u_dH [a] Quality flag (1) 93- 97 F5.2 mag dH ?=- 2MASS H magnitude difference 99 A1 --- u_dK [ab] Quality flag (1) 101-105 F5.2 mag dK ?=- 2MASS K magnitude difference
Note (1): Flags as follows: a = Large (>0.2 mag) photometric uncertainty b = Low photometric quality (X flag)
Acknowledgements: Jesus Maiz Apellaniz, jmaiz(at)iaa.es
(End) Patricia Vannier [CDS] 29-Apr-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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