Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Layden, Andrew C."'
Autor:
Caddy, Robert V., Layden, Andrew C., Reichart, Daniel E., Haislip, Joshua B., Kouprianov, Vladimir V., Ivarsen, Kevin M., Moore, Justin P., LaCluyze, Aaron P., Linder, Tyler R., Nysewander, Melissa C.
Publikováno v:
PASP 134 094201 (2022)
We present time-series CCD photometry in the $BVRI$ passbands of the recently identified symbiotic nova V1835 Aquilae (NSV 11749) over an interval of 5.1 years with 7-14 day cadence, observed during its quiescence. We find slow light variations with
Externí odkaz:
http://arxiv.org/abs/2209.11251
We present multi-epoch infrared photometry in the $K_s$-band for 74 bright RR Lyrae variable stars tied directly to the 2MASS photometric system. We systematize additional $K$-band photometry from the literature to the 2MASS system and combine it to
Externí odkaz:
http://arxiv.org/abs/1907.04920
Publikováno v:
Astrophys.J.632:266-276,2005
We present deep VI photometry of stars in the globular cluster M5 (NGC 5904) based on images taken with the Hubble Space Telescope. The resulting color-magnitude diagram reaches below V ~ 27 mag, revealing the upper 2-3 magnitudes of the white dwarf
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506727
Autor:
Pritzl, Barton J., Smith, Horace A., Stetson, Peter B., Catelan, Marcio, Sweigart, Allen V., Layden, Andrew C., Rich, R. Michael
Publikováno v:
Astron.J. 126 (2003) 1381
[Abridged] We present the results of a Hubble Space Telescope snapshot program to survey the inner region of the globular cluster NGC 6441 for its variable stars. A total of 57 variable stars was found including 38 RR Lyrae stars, 6 Population II Cep
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305339
Autor:
Hoard, D. W., Layden, Andrew C., Buss, Jeremy, Demarco, Ricardo, Greene, Jenny, Kim-Quijano, Jessica, Soderberg, Alicia M.
We present high quality BVRI CCD photometry of the variable star V716 Monocerotis (= NSV 03775). We confirm it to be an RR Lyrae star of variability type ab (i.e. a fundamental mode pulsator), and determine its metallicity ([Fe/H] = -1.33 +/- 0.25),
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010136
Autor:
Layden, Andrew C.
I review statistical parallax absolute magnitude determinations which employ data from the HIPPARCOS satellite for RR Lyrae and Cepheid variables, and for several other stellar classes. Five groups have studied the RR Lyrae stars, and the results are
Externí odkaz:
http://arxiv.org/abs/astro-ph/9810461
Autor:
Layden, Andrew C.
I review the properties of the Galaxy's stellar halo, specifically as traced by horizontal branch stars, but with reference to and in comparison with other stellar tracers. I discuss the halo density profile, the variation in horizontal branch morpho
Externí odkaz:
http://arxiv.org/abs/astro-ph/9710027
Autor:
Layden, Andrew C., Sarajedini, Ata
We present a deep color-magnitude diagram in the VI passbands of the globular cluster M54, a member of the Sagittarius dwarf galaxy. The data extend below the cluster's main sequence turn-off, allowing us to estimate the cluster's age. We find that M
Externí odkaz:
http://arxiv.org/abs/astro-ph/9706168
Autor:
Layden, Andrew C., Broderick, Andrew J., Pohl, B. L., Reichart, D. E., Ivarsen, K. M., Haislip, J. B., Nysewander, M. C., LaCluyze, A. P., Corwin, T. M.
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2010 01. 122(895), 1000-1007.
Externí odkaz:
https://www.jstor.org/stable/10.1086/656018
Autor:
Guldenschuh, Katherine A., Layden, Andrew C., Wan, Yayun, Whiting, Alan, van der Bliek, Nicole, Baca, Pamela, Carlin, Jeffrey, Freismuth, Tucker, Mora, Marcelo, Salyk, Colette, Vera, Sergio, Verdugo, Miguel, Young, Amber
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2005 Jul . 117(833), 721-725.
Externí odkaz:
https://www.jstor.org/stable/10.1086/431178