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HD 182634


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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:Lyra
Right ascension:19h23m57.45s
Declination:+38°06'51.9"
Apparent magnitude:7.939
Distance:240.964 parsecs
Proper motion RA:7.4
Proper motion Dec:12.2
B-T magnitude:8.239
V-T magnitude:7.964

Catalogs and designations:
Proper Names
HD 1989HD 182634
TYCHO-2 2000TYC 3134-1419-1
USNO-A2.0USNO-A2 1275-11305815
HIPHIP 95353

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