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J/A+A/397/997       Hipparcos red stars                      (Platais+, 2003)

Hipparcos red stars in the HpVT2 and VIC systems. Platais I., Pourbaix D., Jorissen A., Makarov V.V., Berdnikov L.N., Samus N.N., Lloyd Evans T., Lebzelter T., Sperauskas J. <Astron. Astrophys. 397, 997 (2003)> =2003A&A...397..997P
ADC_Keywords: Stars, late-type ; Photometry, UBVRI ; Photometry, Cousins ; Radial velocities Keywords: stars: late type - stars: carbon - photometry - radial velocities Abstract: For Hipparcos M, S, and C spectral type stars, we provide calibrated instantaneous (epoch) Cousins V-I color indices using newly derived HpVT2 photometry. Three new sets of ground-based Cousins VI data have been obtained for more than 170 carbon and red M giants, observed at SAAO in 1984 and 1987 (table1), at Siding Spring Observatory in 2002 (table2), and with the Automatic Photoelectric Telescopes located at Fairborn Observatory from 1996 (table3). These datasets in combination with the published sources of VI photometry served to obtain the calibration curves linking Hipparcos/Tycho Hp-VT2 with the Cousins V-I index. In total, 321 carbon stars and 4464 M- and S-type stars have new V-I indices. The standard error of the mean V-I is about 0.1mag or better down to Hp∼9 although it deteriorates rapidly at fainter magnitudes. These V-I indices can be used to verify the published Hipparcos V-I color indices. Thus, we have identified a handful of new cases where, instead of the real target, a random field star has been observed. A considerable fraction of the DMSA/C and DMSA/V solutions for red stars appear not to be warranted. Most likely such spurious solutions may originate from usage of a heavily biased color in the astrometric processing. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 59 85 SAAO photometry of selected carbon stars table2.dat 45 47 BVI photometry at Siding Spring table3.dat 45 45 APT photometry of selected red variables table5.dat 48 61 Radial velocities of R and other selected carbon stars table7.dat 50 4785 Coefficients of the linear regression between Hp-VT2 and Hp for each of the Hipparcos M, S and C stars studied.
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/259 : The Tycho-2 Catalogue (Hog+ 2000) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- CGCS CGCS number (Cat. III/227) 5 A1 --- n_CGCS [a] a: close companion (1) 7- 12 I6 --- HIP ? HIP number 14- 22 A9 --- GCVS GCVS (variable) name 24- 28 F5.2 mag Vmag V magnitude 29 A1 --- n_Vmag [v] v: apparent variability 31- 34 F4.2 mag B-V B-V colour index 35 A1 --- n_B-V [v] v: apparent variability 36 A1 --- u_B-V Uncertainty flag on B-V 38- 41 F4.2 mag U-B U-B colour index 42 A1 --- n_U-B [v] v: apparent variability 43 A1 --- u_U-B Uncertainty flag on U-B 45- 48 F4.2 mag Rc-Ic ? Cousins R-I colour index 49 A1 --- n_Rc-Ic [v] v: apparent variability 51- 54 F4.2 mag V-Ic ? V-Ic colour index 55 A1 --- n_V-Ic [v] v: apparent variability 57 I1 --- o_Vmag Total number of observations
Note (1): Close companion: 1871 (9" separation, bright) 3855 (15") 3864 (11") 3966 (15", bright) 4179 (14") 4524 (13" & 18")
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP number 9- 17 A9 --- GCVS GCVS name 19- 29 F11.3 d JD Julian date 31- 35 F5.2 mag Vmag V magnitude 37- 40 F4.2 mag B-V B-V colour index 42- 45 F4.2 mag V-Ic V-Ic colour index
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP number 9- 17 A9 --- GCVS GCVS name 20- 23 F4.2 mag Vmag V magnitude 26- 29 F4.2 mag V-Ic V-Ic colour index 31- 35 F5.2 --- a0 Fit coefficient a_0_ (intercept) (1) 37- 41 F5.3 --- a1 Fit coefficient a_1_ (slope) (1) 43- 45 I3 --- o_Vmag Total number of observations
Note (1): V-Ic = a0 + a1Vmag
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 5 I5 --- HIP ? HIP number 8- 11 I4 --- CGCS ? CGCS number 14- 22 A9 --- GCVS GCVS name 24 A1 --- n_GCVS [a] a: Not HIP 29899. See Table 8 of paper 26- 36 F11.3 d JD Julian date 38- 43 F6.1 km/s HRV Heliocentric radial velocity 45- 47 F3.1 km/s e_HRV rms uncertainty on HRV
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos Catalogue number 8- 16 A9 --- Name GCVS variable star name or NSV suspected variable number 19- 23 F5.2 mag Hpmag Hipparcos median Hp magnitude (H44) 26- 29 F4.2 mag e_Hpmag Amplitude of Hp variation, i.e., H50-H49 32- 36 F5.2 --- b0 Fit coefficient b_0_ (intercept) (1) 38- 42 F5.2 --- b1 Fit coefficient b_1_ (slope) (1) 44- 48 F5.2 mag V-I Median V-I color (derived in this paper) 50 A1 --- SpType Crude spectral type
Note (1): Hp can be predicted for any VT2 via Hp = (b0 + VT2)/(1 - b1)
Acknowledgements: Dimitri Pourbaix History: * 04-Nov-2002: Catalog originalluCy received from Dimitri Pourbaix * 23-Apr-2004: A completed table7, including the "V-I" column which was not in the original version, was supplied by Alain Jorissen.
(End) Patricia Bauer [CDS] 04-Nov-2002
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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