2007A&A...469.1221F


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST09:19:42

2007A&A...469.1221F - Astronomy and Astrophysics, volume 469, 1221-1229 (2007/7-3)

Sydney observatory Galactic survey. Potential for detection of extreme disk-crossing stars.

FRESNEAU A., VAUGHAN A.E. and ARGYLE R.W.

Abstract (from CDS):

First Epoch astrometric and radiometric information of a survey in the optical along the Galactic fourth quadrant is archived for further analysis in the time-domain. A photographic survey of 1.9x106 stars down to B-magnitude 14±0.5 along the galactic meridian l=(330±5)°, -64°≤b≤-7° and along the galactic equator 272°≤l≤341°, |b|≤7°, is provided from century old astrographic plates of Sydney Observatory. Stellar candidates to investigate the Galaxy disk kinematics up to a distance of 1kpc from the Sun are tentatively selected. The early data are combined with late epoch observations into a set of 4.8x105 stars with significant proper motion µ≥0.005"/yr and approximate color B-V. The selection effects and the kinematical bias on the stellar system are investigated. F-G stellar candidates with a mean transverse velocity dispersion of 45km/s are suggested. The spin rate of (1)/(2)°/pc of the velocity ellipsoid along its long axis is observed over half a thickness of 25pc of the galactic disk for stars at an estimated distance D≤300pc from the Sun. A catalogue of 4.8x105 stars is provided for further investigation of the galactic disk heating by transient spiral wave or by GMC encounter.

Abstract Copyright:

Journal keyword(s): surveys - stars: kinematics

VizieR on-line data: <Available at CDS (J/A+A/469/1221): table1.dat table2.dat table3.dat ac/* misc/* merid/* sogs/*>

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14993 1
2 * eta Car Em* 10 45 03.5455050 -59 41 03.951060 6.37 7.034 6.21 4.90 4.41 OBepec 2221 0
3 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 242 0
4 NAME Carina Region reg ~ ~           ~ 160 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-09:19:42

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