Parallax measurements of the mira-type star UX Cygni with phase-referencing VLBI

被引：26
作者：
Kurayama, T
Sasao, T
Kobayashi, H
机构：
[1] Natl Astron Observ, VERA Observ, Mitaka, Tokyo 1818588, Japan
[2] Ajou Univ, Suwon 442749, South Korea
来源：
ASTROPHYSICAL JOURNAL | 2005年 / 627卷 / 01期
关键词：
astrometry; stars : AGB and post-AGB; stars : individual ( UX Cygni); techniques : interferometric;
D O I：
10.1086/432051
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have measured the annual parallax of the Mira-type variable star UX Cyg at omega = 0.54 +/- 0.06 max from phase-referencing VLBI observations of its circumstellar water masers with the VLBA. The corresponding distance is 1.85(-0.19)(+0.25) kpc. This is the mesurement of an annual parallax based on abservations of water masers. It is important to calibrate the period-luminosity relation of Mira variables because it is an important distance indicator in astronomy. We discuss the distance to the Large Megallanic Cloud. We obtained the three-dimensional position and velocity of UX Cyg in our galaxy: (R, theta, z) = (8.20 +/- 0.01 kpc, 12 degrees.4(-1.degrees 3)(+1.degrees 7), -0.30(-0.04)(+0.03) kpc), (VRVthetaVZ) = (-81.6(-15.3)(+14.0), 204.0(-3.4)(+3.6), -12.1(-10.3)(+10.2)) km s(-1). We also discuss the origin of UX Cyg.
引用
收藏
页码：L49 / L52
页数：4
相关论文
共 24 条
[1]  
Alef W, 1989, NATO ASI SER C-MATH, V283, P261
[2]   A review of the distance and structure of the Large Magellanic Cloud [J].
Alves, DR .
NEW ASTRONOMY REVIEWS, 2004, 48 (09) :659-665
[3]  
BEASLEY AJ, 1995, ASTR SOC P, V82, P327
[4]   VLA POSITIONS AND DISTRIBUTIONS OF H2O MASERS ASSOCIATED WITH 15 MIRA AND SEMIREGULAR VARIABLES [J].
BOWERS, PF ;
JOHNSTON, KJ .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1994, 92 (01) :189-218
[5]   Very long baseline array measurement of nine pulsar parallaxes [J].
Brisken, WF ;
Benson, JM ;
Goss, WM ;
Thorsett, SE .
ASTROPHYSICAL JOURNAL, 2002, 571 (02) :906-917
[6]   Pulsar parallaxes at 5 GHz with the very long baseline array [J].
Chatterjee, S ;
Cordes, JM ;
Vlemmings, WHT ;
Arzoumanian, Z ;
Goss, WM ;
Lazio, TJW .
ASTROPHYSICAL JOURNAL, 2004, 604 (01) :339-345
[7]   The Vela pulsar's proper motion and parallax derived from VLBI observations [J].
Dodson, R ;
Legge, D ;
Reynolds, JE ;
McCulloch, PM .
ASTROPHYSICAL JOURNAL, 2003, 596 (02) :1137-1141
[8]   A PERIOD LUMINOSITY COLOR RELATION FOR MIRA VARIABLES [J].
FEAST, MW ;
GLASS, IS ;
WHITELOCK, PA ;
CATCHPOLE, RM .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1989, 241 (02) :375-392
[9]   Mira kinematics from Hipparcos data:: a Galactic bar to beyond the Solar circle [J].
Feast, MW ;
Whitelock, PA .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 317 (02) :460-487
[10]   Extragalactic radio source selection for use in directly linking optical astrometric observations to the radio reference frame [J].
Fey, AL ;
Boboltz, DA ;
Gaume, RA ;
Eubanks, TM ;
Johnston, KJ .
ASTRONOMICAL JOURNAL, 2001, 121 (03) :1741-1751
123