Stellar Parameters for Pulsating B Star Candidates in the Kepler Field. (arXiv:1902.09585v1 [astro-ph.SR])
<a href="http://arxiv.org/find/astro-ph/1/au:+Hanes_R/0/1/0/all/0/1">Richard J. Hanes</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Waskie_S/0/1/0/all/0/1">Steven Waskie</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Labadie_Bartz_J/0/1/0/all/0/1">Jonathan M. Labadie-Bartz</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wall_A/0/1/0/all/0/1">Audrey Wall</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Boyer_A/0/1/0/all/0/1">Amber Boyer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+McSwain_M/0/1/0/all/0/1">M. Virginia McSwain</a>
The field of asteroseismology has enjoyed a large swath of data coming from
recent missions (e.g., CoRoT, Kepler, K2). This wealth of new data has allowed
the field to expand beyond the previous limitation of a few extremely bright
and evolved stars. Asteroseismology relies on accurate surface measurements for
boundary conditions, but the predicted physical parameters in the Kepler Input
Catalog (KIC) are unreliable for hot stars. We present stellar parameters of 25
candidate pulsating B star candidates in the Kepler field. We use blue optical
spectra to measure the projected rotational velocity (V sini), effective
temperature (Teff), and surface gravity (logg) using TLUSTY and Kurucz ATLAS9
model atmospheres. We find a large discrepancy between our spectroscopically
derived parameters and those derived from photometry in the KIC and Gaia Data
Release 2 (DR2). Using spectral energy distributions, we also measure the radii
of these stars and later calculate the luminosities and masses. We find the
extinctions (AV ) of these stars to be consistent with zero, which is expected
for stars of high Galactic latitude.
The field of asteroseismology has enjoyed a large swath of data coming from
recent missions (e.g., CoRoT, Kepler, K2). This wealth of new data has allowed
the field to expand beyond the previous limitation of a few extremely bright
and evolved stars. Asteroseismology relies on accurate surface measurements for
boundary conditions, but the predicted physical parameters in the Kepler Input
Catalog (KIC) are unreliable for hot stars. We present stellar parameters of 25
candidate pulsating B star candidates in the Kepler field. We use blue optical
spectra to measure the projected rotational velocity (V sini), effective
temperature (Teff), and surface gravity (logg) using TLUSTY and Kurucz ATLAS9
model atmospheres. We find a large discrepancy between our spectroscopically
derived parameters and those derived from photometry in the KIC and Gaia Data
Release 2 (DR2). Using spectral energy distributions, we also measure the radii
of these stars and later calculate the luminosities and masses. We find the
extinctions (AV ) of these stars to be consistent with zero, which is expected
for stars of high Galactic latitude.
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