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HD 25423

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Distances to Cataclysmic Variables using Linear Polarimetry A model independent method is proposed for estimating the distances toCataclysmic Variables (CVs) using linear polarimetry. A polarizationversus distance relation is constructed by measuring the linearpolarization of field stars along the line of sight to the CV. Thedistance of the CV can be estimated by measuring its polarization and byassuming its intrinsic polarization is negligible in relation to theinterstellar polarization, an assumption that appears to be true in mostcases. We show that an accuracy of 6% is achievable by estimating thedistance to VW Hyi to be 82 +- 5 pc. Rough distance estimates of otherCVs with measured polarization are also given. (SECTION: Stars)
Interstellar polarization from observations of A and F stars in high and intermediate galactic latitudes, and from stars in the Mathewson and Ford polarization catalogue Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1986A&AS...64..487K&db_key=AST
Further observations of magnitude with a coarse grating Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1952MNRAS.112..665W&db_key=AST

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Datos observacionales y astrométricos

Constelación:	Hidra macho
Ascensión Recta:	03^h55^m35.38^s
Declinación:	-73Â°56'58.0"
Magnitud Aparente:	9.215
Movimiento Propio en Ascensión Recta:	-5.3
Movimiento Propio en Declinación:	-1.2
B-T magnitude:	9.714
V-T magnitude:	9.257

Catálogos y designaciones:

Nombres Propios
HD 1989	HD 25423
TYCHO-2 2000	TYC 9159-1295-1
USNO-A2.0	USNO-A2 0150-01612619
HIP	HIP 18362

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