Zobrazeno 1 - 10
of 425
pro vyhledávání: '"Smith, Horace A."'
Autor:
Osborn, Wayne, Kopacki, Grzegorz, Smith, Horace A., Pritzl, Barton J., Kuehn, Charles, Anderson, Mary
New CCD photometry has been combined with published and unpublished earlier observations to study the three Cepheid variables in M13: V1, V2 and V6. The light curve characteristics in $B$, $V$ and $I_{\rm C}$ have been determined and the periods upda
Externí odkaz:
http://arxiv.org/abs/1904.03689
Autor:
Pritzl, Barton J., Gehrman, Thomas C., Salinas, Ricardo, Catelan, Márcio, Smith, Horace A., Borissova, Jura
We present new photometry and analysis of the twelve variable stars (nine RR Lyrae, three SX Phoenicis) belonging to the Sagittarius globular cluster Arp 2. Of the nine RR Lyrae stars in the cluster, eight are RRab and one is RRc. From the RRab stars
Externí odkaz:
http://arxiv.org/abs/1902.10591
Autor:
Hendel, David, Scowcroft, Victoria, Johnston, Kathryn V., Fardal, Mark A., van der Marel, Roeland P., Sohn, Sangmo Tony, Price-Whelan, Adrian M., Beaton, Rachael L., Besla, Gurtina, Bono, Giuseppe, Cioni, Maria-Rosa L., Clementini, Gisella, Cohen, Judith G., Fabrizio, Michele, Freedman, Wendy L., Garofalo, Alessia, Grillmair, Carl J., Kallivayalil, Nitya, Kollmeier, Juna A., Law, David R., Madore, Barry F., Majewski, Steven R., Marengo, Massimo, Monson, Andrew J., Neeley, Jillian R., Nidever, David L., Pietrzyński, Grzegorz, Seibert, Mark, Sesar, Branimir, Smith, Horace A., Soszyński, Igor, Thompson, Ian B., Udalski, Andrezej
Stellar tidal streams provide an opportunity to study the motion and structure of the disrupting galaxy as well as the gravitational potential of its host. Streams around the Milky Way are especially promising as phase space positions of individual s
Externí odkaz:
http://arxiv.org/abs/1711.04663
Autor:
Zhou, A. -Y., Hintz, Eric G., Schoonmaker, Jeremy N., Rodríguez, Eloy, Costa, Victor, Lopez-Gonzalez, M. J., Smith, Horace A., Sanders, Nathan, Monninger, Gerold, Pagel, Lienhard
This paper presents a large amount of observations for the $\delta$ Scuti star AN Lyncis carried out in 2001--2012. The extensive observations include two tri-continent campaigns coordinated in 2002 and 2011, respectively, and several single-site con
Externí odkaz:
http://arxiv.org/abs/1710.03944
Autor:
Smith, Horace A.
Publikováno v:
Lovecraft Annual, 2021 Jan 01(15), 6-16.
Externí odkaz:
https://www.jstor.org/stable/27118853
We review ways in which observations of the changing periods of pulsating variable stars can be used to detect and directly measure their evolution. We briefly describe the two main techniques of analysis -- (O-C) analysis and wavelet analysis -- and
Externí odkaz:
http://arxiv.org/abs/1611.03030
Autor:
Pritzl, Barton J., Gehrman, Thomas C., Salinas, Ricardo, Catelan, Márcio, Smith, Horace A., Borissova, Jura
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2019 May 01. 131(999), 1-10.
Externí odkaz:
https://www.jstor.org/stable/26660750
Autor:
Smith, Horace A.
Publikováno v:
Lovecraft Annual, 2019 Jan 01(13), 153-174.
Externí odkaz:
https://www.jstor.org/stable/26868583
Autor:
Kuehn, Charles A, Smith, Horace A., Catelan, Marcio, Jeon, Young-Beom, Nemec, James M., Walker, Alistair R., Kunder, Andrea, Dame, Kyra, Pritzl, Barton J., De Lee, Nathan, Borissova, Jura
Although more than eight decades have passed since P. Th. Oosterhoff drew attention to differences in the properties of RR Lyrae variables in globular clusters, the origin and significance of the Oosterhoff groups remain unclear. Nonetheless, the acc
Externí odkaz:
http://arxiv.org/abs/1310.0553
Autor:
Smith, Horace A.
Mira variables, RR Lyrae variables, and type II Cepheids all represent evolved states of low-mass stars, and long term observations have revealed that changes in pulsation period occur for each of these classes of variable. Most Mira variables show s
Externí odkaz:
http://arxiv.org/abs/1310.0533