SIMBAD references

2003A&A...397..997P - Astronomy and Astrophysics, volume 397, 997-1010 (2003/1-3)

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. and SPERAUSKAS J.

Abstract (from CDS):

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. 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 0.1 mag 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.

Abstract Copyright:

Journal keyword(s): stars: late type - stars: carbon - techniques: photometric - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/397/997): table1.dat table2.dat table3.dat table5.dat table7.dat>

Simbad objects: 4823

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2019.08.21-03:45:02

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