Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Girard, T. M."'
Autor:
Bidin, C. Moni, Casetti-Dinescu, D. I., Girard, T. M., Zhang, L., Mendez, R. A., Vieira, K., Korchagin, V. I., van Altena, W. F.
Despite their close proximity, the complex interplay between the two Magellanic Clouds, the Milky Way, and the resulting tidal features, is still poorly understood. Recent studies have shown that the Large Magellanic Cloud (LMC) has a very extended d
Externí odkaz:
http://arxiv.org/abs/1612.03072
We combine the Siding Spring Survey of RR Lyrae stars with the Southern Proper Motion Catalog 4, in order to detect and kinematically characterize overdensities in the inner halo of the Milky Way. We identify one such overdensity above the Galactic p
Externí odkaz:
http://arxiv.org/abs/1507.01459
Autor:
Bidin, C. Moni, Casetti-Dinescu, D. I., Mendez, R. A., Girard, T. M., Vieira, K., Korchagin, V. I., van Altena, W. F.
We present our spectroscopic program aimed to study some new interesting features recently discovered in the Magellanic Cloud System. These were revealed by the spatial distribution of OB-type candidate stars, selected based on UV, optical and IR pho
Externí odkaz:
http://arxiv.org/abs/1307.5356
The balloon-borne Solar Disk Sextant (SDS) experiment has measured the angular size of the Sun on seven occasions spanning the years 1992 to 2011. The solar half-diameter -- observed in a 100-nm wide passband centred at 615 nm -- is found to vary ove
Externí odkaz:
http://arxiv.org/abs/1303.3566
Autor:
Girard, T. M., van Altena, W. F., Zacharias, N., Vieira, K., Casetti-Dinescu, D. I., Castillo, D., Herrera, D., Lee, Y. S., Beers, T. C., Monet, D. G., Lopez, C. E.
We present the fourth installment of the Yale/San Juan Southern Proper Motion Catalog, SPM4. The SPM4 contains absolute proper motions, celestial coordinates, and (B,V) photometry for over 103 million stars and galaxies between the south celestial po
Externí odkaz:
http://arxiv.org/abs/1104.5708
We analyze the 3D kinematics of a sample of $\sim 4400$ red clump stars ranging between 5 and 10 kpc from the Galactic center and up to 3 kpc from the Galactic plane. This sample is representative for the metal-rich ([Fe/H] = -0.6 to 0.5) thick disk.
Externí odkaz:
http://arxiv.org/abs/1011.6253
Autor:
Bidin, C. Moni, Girard, T. M., Carraro, G., Mendez, R. A., van Altena, W. F., Korchagin, V. I., Casetti-Dinescu, D. I.
We present the results of radial velocity measurements of 770 thick disk red giants toward the South Galactic Pole, vertically distributed from 0.5 kpc to 5 kpc with respect to the Galactic plane. We find a small gradient in the vertical velocity dis
Externí odkaz:
http://arxiv.org/abs/0712.3528
Autor:
Casetti-Dinescu, D. I., Girard, T. M., Herrera, D., van Altena, W. F., López, C. E., Castillo, D. J.
Publikováno v:
Astron.J.134:195-204,2007
We have measured the absolute proper motions of globular clusters NGC 2808, 3201, 4372, 4833, 5927 and 5986. The proper motions are on the Hipparcos system and they are the first determinations ever made for these low Galactic latitude clusters. The
Externí odkaz:
http://arxiv.org/abs/0705.3438
Autor:
Girard, T. M., Korchagin, V. I., Casetti-Dinescu, D. I., van Altena, W. F., Lopez, C. E., Monet, D. G.
Publikováno v:
Astron.J.132:1768-1782,2006
The kinematical properties of the Galactic Thick Disk are studied using absolute proper motions from the SPM3 Catalog and 2MASS near-infrared photometry for a sample of ~1200 red giants in the direction of the South Galactic Pole. The photometrically
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607417
We present the third installment of the Yale/San Juan Southern Proper Motion Catalog, SPM3. Absolute proper motions, positions, and photographic B,V photometry are given for roughly 10.7 million objects, primarily stars, down to a magnitude of V=17.5
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402411