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J/A+A/291/121       Study of star V9 in 47 Tuc   (Storm+ 1994)

A Baade-Wesselink analysis of the RR Lyrae star V9 in 47 Tucanae. STORM J., NORDSTROEM B., CARNEY B.W., ANDERSEN J. <Astron. Astrophys. 291, 121 (1994)> =1994A&A...291..121S (SIMBAD/NED Reference)
ADC_Keywords: Stars, variable ; Photometry, infrared ; Radial velocities Keywords: stars: fundamental parameters - stars: absolute magnitudes - stars; horizontal branch - stars: variables: other (RR Lyrae) - globular clusters: individual: 47 Tuc Description: We present an infrared K-band light curve and a radial velocity curve for the RR Lyrae star V9 in the metal rich globular cluster 47 Tucanae ([Fe/H]=-0.71). Combining these new data with the optical photometry presented in Carney et al. (1993PASP..105..294C), we perform a Baade-Wesselink analysis and derive a distance modulus of 47 Tuc of 13.23mag±0.17 and absolute mean magnitudes of <MV≥0.32mag and <MK≥-0.57mag for V9. We also present a well populated visual-infrared color-magnitude diagram of the cluster, reaching from the upper red giant branch to the subgiant branch. Objects: -------------------------------------------------- RA (2000) DE Name -------------------------------------------------- 00 23.6 -72 05 47 Tuc V9 = HV 810 -------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1 32 97 K magnitudes for V9 table2 43 116 Infrared-optical color-magnitude data for 47 Tuc table3 56 71 Radial velocities for V9 in 47 Tuc
Byte-by-byte Description of file: table1
Bytes Format Units Label Explanations
1- 12 F12.4 d HJD Heliocentric Julian Date at mid-exposure 14- 19 F6.4 --- Phase [0/1[ Phase computed according to the ephemeris HJD(max) = 2447485.385 + 0.736852 * E (days) 21- 26 F6.3 mag Kmag Average K-band magnitude computed after binning the data according to time in bins of 11 measurements and rejecting 3 sigma outliers iteratively. 28- 32 F5.3 mag e_Kmag rms uncertainty on Kmag
Byte-by-byte Description of file: table2
Bytes Format Units Label Explanations
1- 3 I3 --- ID Sequential number 5- 11 F7.3 pix Xpos X coordinate in the IR detector frame 12- 18 F7.3 pix Ypos Y coordinate in the IR detector frame 20- 25 F6.3 mag K0mag Dereddened K magnitude of the star 27- 31 F5.3 mag e_K0mag rms uncertainty on K0mag 33- 37 F5.3 mag (V-K)0 Dereddened (V-K) color of the star 39- 43 F5.3 mag e_(V-K)0 rms uncertainty on (V-K)0
Byte-by-byte Description of file: table3
Bytes Format Units Label Explanations
1- 12 F12.4 d HJD Heliocentric Julian Date at mid-exposure 14- 19 F6.4 --- Phase [0/1[ Phase computed according to the ephemeris HJD(max) = 2447485.385 + 0.736852 * E (days) 21- 25 F5.1 km/s RV Radial velocity 27- 29 F3.1 km/s e_RV rms uncertainty on RV 31- 35 F5.3 --- Depth ? Depth of the CORAVEL cross-correlation dip 37- 41 F5.3 --- e_Depth ? rms uncertainty on Depth 43- 46 F4.1 km/s Width ? Width of the CORAVEL cross-correlation dip 48- 50 F3.1 km/s e_Width ? rms uncertainty on Width 52- 55 I4 --- N Average number of counts per channel for the measurement
Courtesy: Jesper Storm
(End) Patricia Bauer [CDS] 12-Apr-1996
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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