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HD 173088


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10 New γ Doradus and δ Scuti Stars
We present high-resolution spectroscopy and precision photometry of fivenew γ Doradus and five new δ Scuti variables. The five newγ Doradus variables substantially increase the number of confirmedstars of this class. All 10 stars fall in the spectral class rangeF0-F2, but they are cleanly separated into two groups by theirluminosity and photometric periods. However, the period gap between theγ Doradus and δ Scuti stars is becoming very narrow since weconfirm that HD 155154 is a γ Doradus star with the shortestperiods reported to date (the shortest of its four periods is ~0.312days). We do not find any evidence in our sample for stars exhibitingboth δ Scuti- and γ Doradus-type pulsations.

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Observation and Astrometry data

Constellation:Λύρα
Right ascension:18h42m24.18s
Declination:+28°07'29.5"
Apparent magnitude:7.633
Distance:294.985 parsecs
Proper motion RA:2.1
Proper motion Dec:-9.5
B-T magnitude:7.615
V-T magnitude:7.632

Catalogs and designations:
Proper Names
HD 1989HD 173088
TYCHO-2 2000TYC 2116-330-1
USNO-A2.0USNO-A2 1125-10134752
HIPHIP 91734

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