Sign on
ADS Classic is now deprecated. It will be completely retired in October 2019. This page will automatically redirect to the new ADS interface at that point.

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Printable Article (PDF/Postscript)
· Scanned Article (GIF)
· arXiv e-print (arXiv:1211.6995)
· Table of Contents
· References in the Article
· Citations to the Article (2) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The outer rotation curve project with VERA: Trigonometric parallax of IRAS 05168+3634
Authors:
Sakai, Nobuyuki; Honma, Mareki; Nakanishi, Hiroyuki; Sakanoue, Hirofumi; Kurayama, Tomoharu
Affiliation:
AA(The Graduate University for Advanced Studies (Sokendai), Mitaka, Tokyo 181-8588, Japan ), AB(The Graduate University for Advanced Studies (Sokendai), Mitaka, Tokyo 181-8588, Japan ), AC(Faculty of Science, Kagoshima University, 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan), AD(Faculty of Science, Kagoshima University, 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan), AE(Center for Fundamental Education, Teikyo University of Science, 2525 Yatsusawa, Uenohara, Yamanashi 409-0193, Japan)
Publication:
Advancing the Physics of Cosmic Distances, Proceedings of the International Astronomical Union, IAU Symposium, Volume 289, pp. 95-98
Publication Date:
02/2013
Origin:
CUP
Keywords:
Galaxy: kinematics and dynamics, ISM: individual (IRAS, 05168+3634), techniques: interferometric, astrometry,
Abstract Copyright:
(c) 2013: Copyright © International Astronomical Union 2013
DOI:
10.1017/S1743921312021199
Bibliographic Code:
2013IAUS..289...95S

Abstract

We present a measurement of the trigonometric parallax of IRAS 05168+3634 with VERA. The parallax is 0.532 +/- 0.053 milli-arcsec, corresponding to a distance of 1.88+0.21 -0.17 kpc. This is significantly closer than the previous distance estimate of 6 kpc based on a kinematic distance measurement. This drastic change in the source distance implies the need for revised values of not only the physical parameters of IRAS 05168+3634, but it also impies a different location in the Galaxy, placing it in the Perseus arm rather than the Outer arm. We also measured the proper motion of the source. A combination of the distance and proper motion with the systemic velocity yields a rotation velocity Theta = 227+9 -11 km s-1 at the source position, assuming Theta0 = 240 km s-1. Our result, combined with previous VLBI results for six sources in the Perseus arm, indicates that the sources rotate systematically more slowly than the Galactic rotation velocity at the local standard of rest. In fact, we derive peculiar motions in the disk averaged over the seven sources in the Perseus arm of (U mean, V mean) = (11 +/- 3, -17 +/- 3) km s-1, which indicates that these seven sources are moving systematically toward the Galactic Center and lag behind the overall Galactic rotation.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints