Astrometry of OH/IR Stars Using 1612MHz Hydroxyl Masers. I. Annual Parallaxes of WX Psc and OH138.0+7.2 MEConference on Why Galaxies Care About AGB Stars III: A Closer Look in Space and Time, JUL 28-AUG

• We report on the measurement of the trigonometric parallaxes of 1612 MHz hydroxyl masers around two asymptotic giant branch stars, WX. Psc and OH. 138.0+7.2, using the NRAO Very Long Baseline Array with in-beam phase referencing calibration. We obtain a 3s upper limit of.

Ämnesord

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Nyckelord

techniques

Astronomy & Astrophysics

masers

agb stars

circumstellar oh masers

correlator

vera

proper motions

astrometry

pulsars

software

distance

OH 138.0+7.2)

stars: AGB and post-AGB

vlbi astrometry

h2o masers

stars: individual (WX Psc

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)