J/A+A/476/73 Calibration of Cepheid Period/Luminosity relation (Fouque+, 2007)
A new calibration of Galactic Cepheid period-luminosity relations from B to K
bands, and a comparison to LMC relations.
Fouque P., Arriagada P., Storm J., Barnes T.G., Nardetto N., Merand A.,
Kervella P., Gieren W., Bersier D., Benedict G.F., McArthur B.E.
<Astron. Astrophys., 476, 73-81 (2007)>
=2007A&A...476...73F 2007A&A...476...73F
ADC_Keywords: Stars, variable ; Parallaxes, trigonometric ; Magnitudes, absolute
Keywords: stars: variables: Cepheids - stars: distances -
stars: fundamental parameters - galaxies: distances and redshifts
Abstract:
The universality of the Cepheid period-luminosity (PL) relations has
been under discussion since metallicity effects were assumed to play
a role in the value of the intercept and, more recently, of the slope
of these relations. The goal of the present study is to calibrate the
Galactic PL relations in various photometric bands (from B to K) and
to compare the results to the well-established PL relations in the LMC.
We use a set of 59 calibrating stars, the distances of which are
measured using five different distance indicators: Hubble Space
Telescope and revised Hipparcos parallaxes, infrared surface
brightness and interferometric Baade-Wesselink parallaxes, and
classical Zero-Age-Main-Sequence-fitting parallaxes for Cepheids
belonging to open clusters or OB stars associations. A detailed
discussion of absorption corrections and projection factor to be
used is given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 26 158 Adopted weighted mean extinction values for the 155
Cepheids in (Laney & Caldwell, 2007MNRAS.377..147L 2007MNRAS.377..147L),
GT Car, SU Cru and BG Cru
table6.dat 43 81 Adopted parallax of our calibrators
table7.dat 75 59 Adopted absolute magnitudes of the 59 calibrators in
7 photometric bands (from B to Ks) and for two
Wesenheit indices, V-I and B-I
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Star Star name
13- 17 F5.3 mag E(B-V) Adopted weighted mean extinction value
19- 23 F5.3 mag e_E(B-V) rms uncertainty on E(B-V)
25- 26 I2 --- N Number of measures
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 9 A9 -- Star Star name
12- 19 F8.6 [d] logP Period
21- 24 F4.2 mas plx Adopted parallax
26- 29 F4.2 mas e_plx rms uncertainty on plx
31 I1 --- src1 Adopted source for distance indicator (1)
32 A1 --- u_src1 Uncertainty flag on Source1 (2)
33 I1 --- src2 ? Other available distance indicator (1)
34 A1 --- u_src2 Uncertainty flag on Source2 (2)
35 I1 --- src3 ? Other available distance indicator (1)
36 A1 --- u_src3 Uncertainty flag on Source3 (2)
37 I1 --- src4 ? Other available distance indicator (1)
38 A1 --- u_src4 Uncertainty flag on Source4 (2)
39 I1 --- src5 ? Other available distance indicator (1)
40 A1 --- u_src5 Uncertainty flag on Source5 (2)
42- 43 A2 --- Mode Pulsation mode (3)
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Note (1): Five different distance indicators considered, as follow:
1 = HST, Hubble Space Telescope parallaxes
2 = IBW, interferometric Baade-Wesselink parallaxes
3 = IRSB, infrared surface brightness parallaxes
4 = ZAMS, classical Zero-Age-Main-Sequence-fitting parallaxes
5 = HIP, revised Hipparcos parallaxes
Note (2): When a distance indicator is of low quality or leads to rejection.
Note (3): Mode as follows:
FO = stars suspected to pulse in the first overtone mode
DM = double mode pulsator
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Star Star name
14- 21 F8.6 [d] logP Period
23- 27 F5.2 mag BMAG Adopted absolute Johnson B magnitude
29- 33 F5.2 mag VMAG Adopted absolute Johnson V magnitude
35- 39 F5.2 mag RcMAG ? Adopted absolute Cousins R magnitude
41- 45 F5.2 mag IcMAG Adopted absolute Cousins I magnitude
47- 51 F5.2 mag Wvi Adopted absolute reddening-free Wesenheit index
Wvi=V-2.55(V-I)
53- 57 F5.2 mag Wbi Adopted absolute reddening-free Wesenheit index
Wbi=B-1.866(B-I)
59- 63 F5.2 mag JMAG Adopted absolute Johnson J magnitude
65- 69 F5.2 mag HMAG ? Adopted absolute Johnson H magnitude
71- 75 F5.2 mag KsMAG Adopted absolute Johnson Ks magnitude
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 31-Dec-2007