Zobrazeno 101 - 110
of 760
pro vyhledávání: '"Irwin, M. J."'
Autor:
Zucker, D. B., Belokurov, V., Evans, N. W., Kleyna, J. T., Irwin, M. J., Wilkinson, M. I., Fellhauer, M., Bramich, D. M., Gilmore, G., Newberg, H. J., Yanny, B., Smith, J. A., Hewett, P. C., Bell, E. F., Rix, H. -W., Gnedin, O. Y., Vidrih, S., Wyse, R. F. G., Willman, B., Grebel, E. K., Schneider, D. P., Beers, T. C., Kniazev, A. Y., Barentine, J. C., Brewington, H., Brinkmann, J., Harvanek, M., Kleinman, S. J., Krzesinski, J., Long, D., Nitta, A., Snedden, S. A.
Publikováno v:
Astrophys.J.650:L41-L44,2006
In this Letter, we study a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging. Its color-magnitude diagram (CMD) shows a well-def
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606633
Autor:
Dufton, P. L., Smartt, S. J., Lee, J. K., Ryans, R. S. I., Hunter, I., Evans, C. J., Herrero, A., Trundle, C., Lennon, D. J., Irwin, M. J., Kaufer, A.
An analysis is presented of VLT-FLAMES spectroscopy for three Galactic clusters, NGC3293, NGC4755 and NGC6611. Non-LTE model atmosphere calculations have been used to estimate effective temperatures (from either the helium spectrum or the silicon ion
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606409
Autor:
Belokurov, V., Evans, N. W., Irwin, M. J., Lynden-Bell, D., Yanny, B., Vidrih, S., Gilmore, G., Seabroke, G., Zucker, D. B., Wilkinson, M. I., Hewett, P. C., Bramich, D. M., Fellhauer, M., Newberg, H. J., Wyse, R. F. G., Beers, T. C., Bell, E. F., Barentine, J. C., Brinkmann, J., Cole, N., Pan, K., York, D. G.
Publikováno v:
Astrophys.J.658:337-344,2007
We use Sloan Digital Sky Survey Data Release 5 photometry and spectroscopy to study a tidal stream that extends over 50 degrees in the North Galactic Cap. From the analysis of the path of the stream and the colors and magnitudes of its stars, the str
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605705
Autor:
Fellhauer, M., Belokurov, V., Evans, N. W., Wilkinson, M. I., Zucker, D. B., Gilmore, G., Irwin, M. J., Bramich, D. M., Vidrih, S., Wyse, R. F. G., Beers, T. C., Brinkmann, J.
Publikováno v:
Astrophys.J.651:167-173,2006
The latest Sloan Digital Sky Survey data reveal a prominent bifurcation in the distribution of debris of the Sagittarius dwarf spheroidal (Sgr) beginning at a right ascension of roughly 190 degrees. Two branches of the stream (A and B) persist at rou
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605026
Autor:
Belokurov, V., Zucker, D. B., Evans, N. W., Gilmore, G., Vidrih, S., Bramich, D. M., Newberg, H. J., Wyse, R. F. G., Irwin, M. J., Fellhauer, M., Hewett, P. C., Walton, N. A., Wilkinson, M. I., Cole, N., Yanny, B., Rockosi, C. M., Beers, T. C., Bell, E. F., Brinkmann, J., Ivesic, Z., Lupton, R.
Publikováno v:
Astrophys.J.642:L137-L140,2006
We use Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) u,g,r,i,z photometry to study Milky Way halo substructure in the area around the North Galactic Cap. A simple color cut (g-r < 0.4) reveals the tidal stream of the Sagittarius dwarf spheroid
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605025
Autor:
Lawrence, A., Warren, S. J., Almaini, O., Edge, A. C., Hambly, N. C., Jameson, R. F., Lucas, P., Casali, M., Adamson, A., Dye, S., Emerson, J. P., Foucaud, S., Hewett, P., Hirst, P., Hodgkin, S. T., Irwin, M. J., Lodieu, N., McMahon, R. G., Simpson, C., Smail, I., Mortlock, D., Folger, M.
Publikováno v:
Mon.Not.Roy.Astron.Soc.379:1599-1617,2007
We describe the goals, design, implementation, and initial progress of the UKIRT Infrared Deep Sky Survey (UKIDSS), a seven year sky survey which began in May 2005, using the UKIRT Wide Field Camera. It is a portfolio of five survey components coveri
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604426
Autor:
Zucker, D. B., Belokurov, V., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Sivarani, T., Hodgkin, S., Bramich, D. M., Irwin, J. M., Gilmore, G., Willman, B., Vidrih, S., Fellhauer, M., Hewett, P. C., Beers, T. C., Bell, E. F., Grebel, E. K., Schneider, D. P., Newberg, H. J., Wyse, R. F. G., Rockosi, C. M., Yanny, B., Lupton, R., Smith, J. A., Barentine, J. C., Brewington, H., Brinkmann, J., Harvanek, M., Kleinman, S. J., Krzesinski, J., Long, D., Nitta, A., Snedden, S. A.
Publikováno v:
Astrophys.J.643:L103-L106,2006
In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the North Galactic Cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5)
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604354
Autor:
Belokurov, V., Zucker, D. B., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Hodgkin, S., Bramich, D. M., Irwin, J. M., Gilmore, G., Willman, B., Vidrih, S., Newberg, H. J., Wyse, R. F. G., Fellhauer, M., Hewett, P. C., Cole, N., Bell, E. F., Beers, T. C., Rockosi, C. M., Yanny, B., Grebel, E. K., Schneider, D. P., Lupton, R., Barentine, J. C., Brewington, H., Brinkmann, J., Harvanek, M., Kleinman, S. J., Krzesinski, J., Long, D., Nitta, A., Smith, J. A., Snedden, S. A.
Publikováno v:
Astrophys.J.647:L111-L114,2006
In this Letter, we announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of 60 kpc. It was found in a systematic search for stellar overdensities in the North Galactic Cap using Sloan Digital Sky Surv
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604355
Autor:
Halliday, C., Carter, D., Bridges, T. J., Jackson, Z. C., Wilkinson, M. I., Quinn, D. P., Evans, N. W., Douglas, N. G., Merrett, H. R., Merrifield, M. R., Romanowsky, A. J., Kuijken, K., Irwin, M. J.
Publikováno v:
Mon.Not.Roy.Astron.Soc.369:97-119,2006
We present radial velocities for a sample of 723 planetary nebulae (PNe) in the disk and bulge of M31, measured using the WYFFOS fibre spectrograph on the William Herschel telescope. Velocities are determined using the [OIII] 5007 Angstrom emission l
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603706
Autor:
Dye, S., Warren, S. J., Hambly, N. C., Cross, N. J. G., Hodgkin, S. T., Irwin, M. J., Lawrence, A., Adamson, A. J., Almaini, O., Edge, A. C., Hirst, P., Jameson, R. F., Lucas, P. W., co-authors., 32
This paper defines the UKIRT Infrared Deep Sky Survey (UKIDSS) Early Data Release (EDR). UKIDSS is a set of five large near-infra-red surveys defined by Lawrence et al. (2006), being undertaken with the UK Infra-red Telescope (UKIRT) Wide Field Camer
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603608