A Cepheid-Based Distance to the Seyfert Galaxy NGC 6814. (arXiv:1910.00666v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Bentz_M/0/1/0/all/0/1">Misty C. Bentz</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ferrarese_L/0/1/0/all/0/1">Laura Ferrarese</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Onken_C/0/1/0/all/0/1">Christopher A. Onken</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Peterson_B/0/1/0/all/0/1">Bradley M. Peterson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Valluri_M/0/1/0/all/0/1">Monica Valluri</a>

We present a Cepheid-based distance to the nearby Seyfert galaxy NGC,6814
from {it Hubble Space Telescope} observations. We obtained F555W and F814W
imaging over the course of 12 visits with logarithmic time spacing in 2013
August$-$October. We detected and made photometric measurements for 16,469
unique sources across all images in both filters, from which we identify 90
excellent Cepheid candidates spanning a range of periods of $13-84$ days. We
find evidence for incompleteness in the detection of candidates at periods <21 days. Based on the analysis of Cepheid candidates above the incompleteness limit, we determine a distance modulus for NGC,6814 relative to the LMC of $mu_{rm rel,LMC}=13.200^{+0.031}_{-0.031}$ mag. Adopting the recent constraint of the distance modulus to the LMC determined by Pietrzynski et al., we find $m-M=31.677^{+0.041}_{-0.041}$ which gives a distance of $21.65 pm 0.41$ Mpc to NGC 6814.

We present a Cepheid-based distance to the nearby Seyfert galaxy NGC,6814
from {it Hubble Space Telescope} observations. We obtained F555W and F814W
imaging over the course of 12 visits with logarithmic time spacing in 2013
August$-$October. We detected and made photometric measurements for 16,469
unique sources across all images in both filters, from which we identify 90
excellent Cepheid candidates spanning a range of periods of $13-84$ days. We
find evidence for incompleteness in the detection of candidates at periods <21
days. Based on the analysis of Cepheid candidates above the incompleteness
limit, we determine a distance modulus for NGC,6814 relative to the LMC of
$mu_{rm rel,LMC}=13.200^{+0.031}_{-0.031}$ mag. Adopting the recent
constraint of the distance modulus to the LMC determined by Pietrzynski et al.,
we find $m-M=31.677^{+0.041}_{-0.041}$ which gives a distance of $21.65 pm
0.41$ Mpc to NGC 6814.

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