Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Fraser, Oliver J."'
Publikováno v:
Astron.J.136:1242-1258,2008
We present a new analysis of the long-period variables in the Large Magellanic Cloud (LMC) from the MACHO Variable Star Catalog. Three-quarters of our sample of evolved, variable stars have periodic light curves. We characterize the stars in our samp
Externí odkaz:
http://arxiv.org/abs/0808.1737
Characterizing Three Candidate Magnetic CVs from SDSS: XMM-Newton and Optical Follow-up Observations
Autor:
Homer, Lee, Szkody, Paula, Henden, Arne, Chen, Bing, Schmidt, Gary D., Fraser, Oliver J., West, Andrew A.
Publikováno v:
Astron.J.132:2743-2754,2006
In the latest in our series of papers on XMM-Newton and ground-based optical follow-up of new candidate magnetic cataclysmic variables (mCVs) found in the Sloan Digital Sky Survey, we report classifications of three systems: SDSS J144659.95+025330.3,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609462
Publikováno v:
Mem.Soc.Ast.It.77:519-520,2006
We are re-analyzing the MACHO variable star database to explore the relationships between pulsation, evolution, and mass loss in evolved stars. We will analyze the multi-periodic properties of long period variable (LPV) stars, 50% of which could not
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509569
Autor:
Tramposch, Jonica, Homer, Lee, Szkody, Paula, Henden, Arne, Silvestri, Nicole M., Yirak, Kris, Fraser, Oliver J., Brinkmann, J.
We report follow-up observations of the Sloan Digital Sky Survey Cataclysmic Variable SDSS J210014.12+004446.0 (hereafter SDSS J2100). We obtained photometry and spectroscopy in both outburst and quiescent states, providing the first quiescent spectr
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501178
Autor:
Homer, Lee, Szkody, Paula, Chen, Bing, Henden, Arne, Schmidt, Gary D., Fraser, Oliver J., Saloma, Karla, Silvestri, Nicole M., Taylor, Hilda, Brinkmann, J.
Publikováno v:
Astrophys.J. 620 (2005) 929-937
We report follow-up XMM-Newton and optical observations of three new polars found in the Sloan Digital Sky Survey. Simple modeling of the X-ray spectra, and consideration of the details of the X-ray and optical lightcurves corroborate the polar natur
Externí odkaz:
http://arxiv.org/abs/astro-ph/0411175
Publikováno v:
Astron.J.129:768-775,2005
We use the eight year light-curve database from the MACHO (MAssive Compact Halo Objects) project together with infrared colors and magnitudes from 2MASS (the Two Micron All Sky Survey) to identify a sample of 22,000 long period variables in the Large
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410398
Autor:
Raymond, Sean N., Fraser, Oliver J., Garg, Arti, Hawley, Suzanne L., Jedicke, Robert, Miknaitis, Gajus, Quinn, Thomas, Rockosi, Constance M., Stubbs, Christopher W., Anderson, Scott F., Hogan, Craig J., Ivezic, Zeljko, Lupton, Robert H., West, Andrew A., Brewington, Howard, Brinkmann, J., Harvanek, Michael, Kleinman, Scot J., Krzesinski, Jurek, Long, Dan, Neilsen, Eric H., Newman, Peter R., Nitta, Atsuko, Snedden, Stephanie A.
Publikováno v:
Astron.J.127:2978-2987,2004
We present a detailed observational strategy for finding Near Earth Objects (NEOs) with the Sloan Digital Sky Survey (SDSS) telescope. We investigate strategies in normal, unbinned mode as well as binning the CCDs 2x2 or 3x3, which affects the sky co
Externí odkaz:
http://arxiv.org/abs/astro-ph/0401438
Autor:
Wolfe, Michael A., Szkody, Paula, Fraser, Oliver J., Homer, Lee, Skinner, Sam, Silvestri, Nicole M.
Photometric and spectroscopic observations reveal the Sloan Digital Sky Survey cataclysmic variable SDSS J132723.39+652854.2 to be a likely SW Sex star with an orbital period of P = 3.28 hours. The Sloan Digital Sky Survey spectrum shows strong HeI,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305607
Autor:
Wolfe, Michael A., Szkody, Paula, Fraser, Oliver J., Homer, Lee, Skinner, Sam, Silvestri, Nicole M.
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2003 Sep . 115(811), 1118-1123.
Externí odkaz:
https://www.jstor.org/stable/10.1086/377013
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