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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 742417.0, MPI für Astronomie / Publikationen_mpia
New classical Cepheids in the inner part of the Northern Galactic disk, and their kinematics
Authors:Tanioka, S.; Matsunaga, N.; Fukue, K.; Inno, L.; Bono, G.; Kobayashi, N.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:The Astrophysical Journal
Volume:842
Issue / Number:2
Start Page:id. 104 (8 pp)
Audience:Not Specified
Abstract / Description:The characteristics of the inner Galaxy remain obscured by significant dust extinction, hence infrared surveys are useful for finding young Cepheids whose distances and ages can be accurately determined. A near-infrared photometric and spectroscopic survey was carried out and three classical Cepheids were unveiled in the inner disk, around 20° and 30° in Galactic longitude. The targets feature small Galactocentric distances, 3–5 kpc, and their velocities are important, as they may be under the environmental influence of the Galactic bar. While one of the Cepheids has a radial velocity consistent with the Galactic rotation, the other two are moving significantly slower. We also compare their kinematics with that of high-mass star-forming regions with measured parallactic distances.
Free Keywords:Galaxy: disk; Galaxy: kinematics and dynamics; stars: variables: Cepheids
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-637X
URL:http://adsabs.harvard.edu/abs/2017ApJ...842..104T
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