Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Harrison, T. E."'
Autor:
Chaboyer, B., McArthur, B. E., O'Malley, E., Benedict, G. F., Feiden, G. A., Harrison, T. E., McWilliam, A., Nelan, E. P., Patterson, R. J., Sarajedini, A.
Hubble Space Telescope (HST) fine guidance sensor observations were used to obtain parallaxes of eight metal-poor ([Fe/H] < -1.4) stars. The parallaxes of these stars determined by the revised Hipparcos reduction average 17% accuracy, in contrast to
Externí odkaz:
http://arxiv.org/abs/1702.00803
We have analyzed Kepler light curves for 849 stars with T_eff < 5200 K from our Cycle 1 Guest Observer program. We identify six new eclipsing binaries, one of which has an orbital period of 29.91 d, and two of which are probably W UMa variables. In a
Externí odkaz:
http://arxiv.org/abs/1111.1137
We identify 231 objects in the newly released Cycle 0 dataset from the Kepler Mission as double-eclipse, detached eclipsing binary systems with Teff < 5500 K and orbital periods shorter than ~32 days. We model each light curve using the JKTEBOP code
Externí odkaz:
http://arxiv.org/abs/1007.4295
We combine infrared spectra in the I, J, H and K bands together with JHK photometry to characterize the spectral type, luminosity class and distance to the infrared counterparts to five INTEGRAL sources. For SAX J18186-1703 and IGR J18483-0311, we pr
Externí odkaz:
http://arxiv.org/abs/0910.5603
We present phase-resolved low resolution infrared spectra of the polar EF Eridani obtained over a period of 2 years with SPEX on the IRTF. The spectra, covering the wavelength range 0.8 to 2.4 microns, are dominated by cyclotron emission at all phase
Externí odkaz:
http://arxiv.org/abs/0709.0978
Autor:
Brinkworth, C. S., Hoard, D. W., Wachter, S., Howell, S. B., Ciardi, D. R., Szkody, P., Harrison, T. E., van Belle, G. T., Esin, A. A.
Publikováno v:
Astrophys.J.659:1541-1562,2007
We present Spitzer Space Telescope photometry of six short-period polars, EF Eri, V347 Pav, VV Pup, V834 Cen, GG Leo, and MR Ser. We have combined the Spitzer Infrared Array Camera (3.6 -8.0 microns) data with the 2MASS J, H, K_s photometry to constr
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701307
Publikováno v:
Astrophys.J.640:L167-L170,2006
Recent Chandra observations have revealed a large population of faint X-ray point sources in the Galactic Centre. The observed population consists of about 2000 faint sources in the luminosity range ~10^31-10^33 erg/s. The majority of these sources (
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511813
Autor:
Smith, D. M., Heindl, W. A., Markwardt, C. B., Swank, J. H., Negueruela, I., Harrison, T. E., Huss, L.
Publikováno v:
Astrophys.J.638:974-981,2006
XTE J1739-302 is a transient X-ray source with unusually short outbursts, lasting on the order of hours. Here we give a summary of X-ray observations we have made of this object in outburst with the Rossi X-ray Timing Explorer (RXTE) and at a low lev
Externí odkaz:
http://arxiv.org/abs/astro-ph/0510658
Autor:
Krisciunas, Kevin, Suntzeff, Nicholas B., Phillips, Mark M., Candia, Pablo, Prieto, Jose Luis, Antezana, R., Chassagne, R., Chen, H. -W., Dickinson, M., Eisenhardt, P. R., Espinoza, J., Garnavich, P. M., Gonzalez, D., Harrison, T. E., Hamuy, M., Ivanov, V. D., Krzeminski, W., Kulesa, C., McCarthy, P., Moro-Martin, A., Muena, C., Noriega-Crespo, A., Persson, S. E., Pinto, P. A., Roth, M., Rubenstein, E. P., Stanford, S. A., Stringfellow, G. S., Zapata, A., Porter, Alain, Wischnjewsky, Marina
We present optical and/or infrared photometry of the Type Ia supernovae SN 1991T, SN 1991bg, SN 1999ek, SN 2001bt, SN 2001cn, SN 2001cz, and SN 2002bo. All but one of these supernovae have decline rate parameters Delta m_15(B) close to the median val
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409036
Autor:
Benedict, G. Fritz, McArthur, B. E., Fredrick, L. W., Harrison, T. E., Skrutskie, M. F., Slesnick, C. L., Rhee, J., Patterson, R. J., Nelan, E., Jefferys, W. H., van Altena, W., Montemayor, T., Shelus, P. J., Franz, O. G., Wasserman, L. H., Hemenway, P. D., Duncombe, R. L., Story, D., Whipple, A. L., Bradley, A. J.
Publikováno v:
Astron.J.126:2549,2003
We present an absolute parallax and relative proper motion for the central star of the planetary nebula NGC 6853 (The Dumbell). We obtain these with astrometric data from FGS 3, a white-light interferometer on {\it HST}. Spectral classifications and
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307449