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HD 233392


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Hipparcos red stars in the HpV_T2 and V I_C systems
For Hipparcos M, S, and C spectral type stars, we provide calibratedinstantaneous (epoch) Cousins V - I color indices using newly derivedHpV_T2 photometry. Three new sets of ground-based Cousins V I data havebeen obtained for more than 170 carbon and red M giants. These datasetsin combination with the published sources of V I photometry served toobtain the calibration curves linking Hipparcos/Tycho Hp-V_T2 with theCousins V - I index. In total, 321 carbon stars and 4464 M- and S-typestars have new V - I indices. The standard error of the mean V - I isabout 0.1 mag or better down to Hp~9 although it deteriorates rapidly atfainter magnitudes. These V - I indices can be used to verify thepublished Hipparcos V - I color indices. Thus, we have identified ahandful of new cases where, instead of the real target, a random fieldstar has been observed. A considerable fraction of the DMSA/C and DMSA/Vsolutions for red stars appear not to be warranted. Most likely suchspurious solutions may originate from usage of a heavily biased color inthe astrometric processing.Based on observations from the Hipparcos astrometric satellite operatedby the European Space Agency (ESA 1997).}\fnmsep\thanks{Table 7 is onlyavailable in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/397/997

The kinematics of the Small Magellanic Cloud from its field carbon stars
The present velocity survey observed 150 carbon stars in the SMC in thenear-IR with an individual precision of + or - 1.8 km/sec. Carbon starsare found to behave kinematically like the planetary nebulae system withwhich they share a velocity dispersion of about 27 km/sec; they alsoexhibit the same velocity dispersion as a sample of halo metal-poorgiants near NGC 121. The carbon stars and planetary nebulae may belongto a spheroidal system, and indications are found of streaming motionsin the wing section between the SMC and LMC.

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Pozíciós és asztrometriai adatok

Csillagkép:Hiúz
Rektaszcenzió:07h29m14.94s
Deklináció:+54°05'15.7"
Vizuális fényesség:9.642
RA sajátmozgás:1.2
Dec sajátmozgás:0.1
B-T magnitude:11.864
V-T magnitude:9.826

Katalógusok és elnevezések:
Megfelelő nevek   (Edit)
HD 1989HD 233392
TYCHO-2 2000TYC 3781-879-1
USNO-A2.0USNO-A2 1425-06941981
HIPHIP 36380

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