A New Kinematic Distance Estimator to the Large Magellanic Cloud | Zendy

Andrew Gould | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

A New Kinematic Distance Estimator to the Large Magellanic Cloud

Author(s) -

Andrew Gould

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/308169

Subject(s) - astrometry , photometry (optics) , sky , physics , large magellanic cloud , proper motion , small magellanic cloud , estimator , systematic error , kinematics , astrophysics , astronomy , distance measurement , radial velocity , line (geometry) , stars , statistics , geometry , mathematics , computer science , artificial intelligence , classical mechanics

The distance to the Large Magellanic Cloud (LMC) can be directly determinedby measuring three of its properties, its radial-velocity field, its meanproper motion, and the position angle \phi_ph of its photometric line of nodes.Statistical errors of 2% are feasible based on proper motions obtained with anyof several proposed astrometry satellites, the first possibility being theFull-Sky Astrometric Mapping Explorer (FAME). The largest source of systematicerror is likely to be in the determination of \phi_ph. I suggest twoindependent methods to measure \phi_ph, one based on counts of clump giants andthe other on photometry of clump giants. I briefly discuss a variety of methodsto test for other sources of systematic errors.Comment: submitted to ApJ, 13 page

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research