J/MNRAS/334/20 UBV(RI)c photometry of HIP red stars (Koen+, 2002)
UBV(RI)c photometry of Hipparcos red stars.
Koen C., Kilkenny D., van Wyk F., Cooper D., Marang F.
<Mon. Not. R. Astron. Soc. 334, 20 (2002)>
=2002MNRAS.334...20K 2002MNRAS.334...20K
ADC_Keywords: Stars, late-type ; Stars, M-type ; Photometry, UBVRI
Keywords: catalogues - stars: fundamental parameters - stars: late-type
Abstract:
We present homogeneous and standardized UBV(RI)c photometry for
nearly 550 M stars selected from the Hipparcos satellite data base
(Cat. I/239) using the following selection criteria: lack of obvious
variability (no Hipparcos variability flag); δ<+10°,
(V-I)>1.7; and V magnitude fainter than about 7.6. Comparisons are
made between the current photometry, other ground-based data sets and
Hipparcos photometry. We use linear discriminant analysis to determine
a luminosity segregation criterion for late-type stars, and principal
component analysis to study the statistical structure of the colour
indices and to calibrate absolute magnitude in terms of (V-I) for the
dwarf stars. Various methods are used to determine the mean absolute
magnitude of the giant stars. We find 10 dwarf stars, apparently
previously unrecognized (prior to Hipparcos) as being within 25pc,
including five within 20pc.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 73 30 Photometry of GJ stars from the supplementary
standards of Kilkenny et al. (1998MNRAS.294...93K 1998MNRAS.294...93K)
table2.dat 103 544 Photometry of Hipparcos red stars
table7.dat 71 14 "New" nearby stars
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10- 15 F6.3 mag Vmag V magnitude
17- 21 F5.3 mag e_Vmag rms uncertainty on Vmag
23- 27 F5.3 mag B-V B-V colour index
29- 33 F5.3 mag e_B-V rms uncertainty on B-V
35- 39 F5.3 mag U-B U-B colour index
41- 45 F5.3 mag e_U-B rms uncertainty on U-B
47- 51 F5.3 mag V-R V-Rc colour index
53- 57 F5.3 mag e_V-R rms uncertainty on V-R
59- 63 F5.3 mag V-I V-Ic colour index
65- 69 F5.3 mag e_V-I rms uncertainty on V-I
72- 73 I2 --- o_Vmag Number of observations in UBV(RI)c
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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- 6 I6 --- HIP HIP (Cat. I/239) number
8- 16 A9 --- Name Other name
18- 19 A2 --- Var Variability flag (1)
21- 26 F6.3 mag Vmag Mean V magnitude
28- 31 F4.3 mag e_Vmag ? rms uncertainty on Vmag
33- 37 F5.3 mag B-V Mean B-V colour index
39- 42 F4.3 mag e_B-V ? rms uncertainty on B-V
44- 48 F5.3 mag U-B ? Mean U-B colour index
50- 53 F4.3 mag e_U-B ? rms uncertainty on U-B
55- 59 F5.3 mag V-R Mean V-Rc colour index
61- 64 F4.3 mag e_V-R ? rms uncertainty on V-R
66- 70 F5.3 mag V-I ? Mean V-Ic colour index
72- 75 F4.3 mag e_V-I ? rms uncertainty on V-I
77 I1 --- o_Vmag Number of observations in UBV(RI)c
79- 84 F6.2 mag VMAG ? Absolute V magnitude
86- 91 F6.2 mag e_VMAG ? rms uncertainty on VMAG
93-103 A11 --- SpType Spectral type
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Note (1): Variability flags:
B: BY Dra type
C: double from the CCDM (Cat. I/269) catalogue
D: known double (or multiple) star
F: Flare star
M: Mira type
N: unnamed unclassified variables (includes "suspected" variable stars)
P: Pulsating star
V: named variable star with no classification
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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- 6 I6 --- HIP HIP (Cat. I/239) number
8- 18 A11 --- Name Other name
20- 24 F5.1 mas plx Parallax
26- 28 F3.1 mas e_plx rms uncertainty on plx
30- 33 F4.1 pc Dist Distance
35- 40 F6.3 mag Vmag V magnitude
42- 46 F5.3 mag B-V B-V colour index
48- 52 F5.3 mag U-B U-B colour index
54- 58 F5.3 mag V-R V-Rc colour index
60- 64 F5.3 mag V-I V-Ic colour index
66 I1 --- o_Vmag Number of observations in UBV(RI)c
68- 71 A4 --- SpType MK spectral type
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History:
From electronic version of the journal
* 10-Dec-2002: In table7, IHP 104644, Name corrected from
CD-44 14344 to CD-44 14334
(End) James Marcout, Patricia Bauer [CDS] 27-Sep-2002