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arXiv:1107.4856v1[astro-ph.SR]25Jul2011 A Spectroscopic Study of DD UMa: Ursa Major Group Member and Candidate for BRITE

Summary: arXiv:1107.4856v1[astro-ph.SR]25Jul2011
A Spectroscopic Study of DD UMa: Ursa Major Group Member and Candidate for BRITE
A. Elmaslia,
, L. Fossatib
, C. P. Folsomc
, B. Albayraka
, H.Izumiurad
aAnkara University, Astronomy and Space Sciences Department, Tandogan, 06100, Ankara, Turkey
bDepartment of Physics and Astronomy, Open University, Walton Hall, Milton Keynes MK7 6AA, UK
cArmagh Observatory, College Hill, Armagh, BT61 9DG, Northern Ireland
dOkayama Astrophysical Observatory, NAOJ, NINS 3037-5 Honjo, Kamogata, Asakuchi, Okayama 719-0232, Japan
The Ursa Major group is a nearby stellar supercluster which, while not gravitationally bound, is defined by co-moving members.
DD UMa is a Scuti star whose membership in the Ursa Major group is unclear.
The objective of this study is to confirm the membership of DD UMa in the Ursa Major group, as well as perform a detailed
spectral analysis of the star. Since DD UMa is a low-amplitude Scuti star, we performed a frequency analysis. We determined
fundamental parameters, chemical abundances, and derive a mass and age for the star.
For this study we observed DD UMa at the Okayama Astrophysical Observatory with the high-resolution spectrograph HIDES,
between the 27th
of February and the 4th


Source: Armagh Observatory


Collections: Physics