Access to Astronomical Catalogues

← Click to display the menu
J/AJ/109/618          RR Lyrae Stars in NGC 5053                   (Nemec+ 1995)

B,V Photometry of the RR Lyrae Stars in the Very Metal-Poor Globular Cluster NGC 5053 Nemec J.M., Mateo M., Schombert J.M. <Astron. J. 109, 618 (1995)> =1995AJ....109..618N
ADC_Keywords: Clusters, globular; Stars, variable; Photometry Abstract: The RR Lyrae stars in NGC 5053 are investigated using B,V photometry derived from CCD frames taken on 15 nights between 1985 and 1994. Estimates of fundamental photometric parameters are presented for the ten stars, including mean B and V magnitudes, pulsation periods, pulsation amplitudes, <B>-<V> colors, and period change rates. Until now the mean B,V magnitudes were unknown because the previous photographic photometry by Baade [Mitteilungen der Hamburger, Sternwarte, B6, n.29 (1928)], Sawyer [Pub. DDO 1, No. 18, p. 357 (1946)], Rosino [MSAIt, 20, 3 (1949)], and Mannino [Pub. Obs. Bologna, 8, No. 12 (1963)] is not on the Johnson system and is not readily transformed to that system. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1 44 75 Photometry of the ab-type RR Lyrae star V1 table2 44 84 Photometry of the c-type RR Lyrae star V2 table3 44 75 Photometry of the ab-type RR Lyrae star V3 table4 44 119 Photometry of the ab-type RR Lyrae star V4 table5 44 15 Photometry of the ab-type RR Lyrae star V5 table6 44 78 Photometry of the c-type RR Lyrae star V6 table7 44 91 Photometry of the c-type RR Lyrae star V7 table8 44 77 Photometry of the c-type RR Lyrae star V8 table9 44 35 Photometry of the ab-type RR Lyrae star V9 table10 44 124 Photometry of the c-type RR Lyrae star V10 table11.dat 123 10 Properties of the RR Lyrae stars in NGC 5053 table1.tex 71 152 TeX (plain) version of Table 1 table2.tex 70 152 TeX (plain) version of Table 2 table3.tex 74 147 TeX (plain) version of Table 3 table4.tex 63 208 TeX (plain) version of Table 4 table5.tex 73 60 TeX (plain) version of Table 5 table6.tex 72 146 TeX (plain) version of Table 6 table7.tex 72 159 TeX (plain) version of Table 7 table8.tex 77 143 TeX (plain) version of Table 8 table9.tex 76 78 TeX (plain) version of Table 9 table10.tex 73 219 TeX (plain) version of Table 10 table11.tex 78 82 TeX (plain) version of Table 11
Byte-by-byte Description of file: table1 table2 table3 table4 table5 table6 Byte-by-byte Description of file: table7 table8 table9 table10
Bytes Format Units Label Explanations
1- 2 I2 --- Night Observing night number 5- 16 F12.4 d HJD *HJD of midpoint of observation 19- 24 F6.3 mag Vmag []? V magnitude 26- 30 F5.3 mag e_Vmag *[]? Uncertainty in Vmag 33- 38 F6.3 mag Bmag *[]? B magnitude 40- 44 F5.3 mag e_Bmag *[]? Uncertainty in Bmag
Note on HJD: The mid-HJD of each exposure was computed using M. Fletcher's (Dominion Astrophysical Observatory) REDSUN program. Note on Bmag: In file table3.dat, night 17, HJD 8416.7570, the B magnitude was derived from I through a V-I,B-V transformation. Note on e_Vmag, e_Bmag: The uncertainties are lower limits since they are the quantities returned by the photometry programs and do not include the systematic zero-point uncertainties introduced by the transformation from instrumental to standard magnitudes.
Byte-by-byte Description of file: table11.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Star Star number, V1 to V10 6- 7 A2 --- l_P [≥] In one case, V10, this is '≥' 8- 15 F8.6 d P Pulsation period for the current epoch 16- 21 F6.2 10-9 Beta ? Period rate change = delta P / delta t 23- 24 A2 --- Type Bailey type 25- 30 F6.2 mag Bmin B magnitude at minimum light 31- 35 F5.2 mag e_Bmin *Uncertainty in Bmin 36- 41 F6.2 mag Bmax B magnitude at maximum light 42- 46 F5.2 mag e_Bmax *Uncertainty in Bmax 47- 52 F6.2 mag AB B amplitude 53- 57 F5.2 mag e_AB Uncertainty in AB, based on eBmin,eBmax 58- 63 F6.2 mag Vmin V magnitude at minimum light 64- 68 F5.2 mag e_Vmin *Uncertainty in Vmin 69- 74 F6.2 mag Vmax V magnitude at maximum light 75- 79 F5.2 mag e_Vmax *Uncertainty in Vmax 80- 85 F6.2 mag AV V amplitude 86- 90 F5.2 mag e_AV Uncertainty in AV, based on eVmin,eVmax 91- 96 F6.2 mag <B> Intensity mean <B> magnitude 97-101 F5.2 mag e_<B> Uncertainty in <B> 102-107 F6.2 mag <V> Intensity mean <V> magnitude 108-112 F5.2 mag e_<V> Uncertainty in <V> 113-118 F6.2 mag <B>-<V> Intensity mean <B>-<V> color 119-123 F5.2 mag e_<B>-<V> Uncertainty in <B>-<V>
Note on e_Bmin, e_Bmax, e_Vmin, e_Vmax: Uncertainties in minimum and maximum magnitudes are subjective estimates based on the number and quality of the observations.
Origin: AAS CD-ROM series, Volume 4, 1995 Lee Brotzman [ADS] 02-May-1995 (JD completed at CDS)
(End) [CDS] 11-Jul-1995
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

catalogue service

© UDS/CNRS

Contact