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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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Observation and Astrometry data

Constellation:Hydre mâle
Right ascension:03h55m35.38s
Declination:-73°56'58.0"
Apparent magnitude:9.215
Proper motion RA:-5.3
Proper motion Dec:-1.2
B-T magnitude:9.714
V-T magnitude:9.257

Catalogs and designations:
Proper Names
HD 1989HD 25423
TYCHO-2 2000TYC 9159-1295-1
USNO-A2.0USNO-A2 0150-01612619
HIPHIP 18362
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