Zobrazeno 51 - 60
of 637
pro vyhledávání: '"Jenkins, J. S."'
Publikováno v:
A&A 573, A3 (2015)
Context: So far more than 60 substellar companions have been discovered around giant stars. These systems present physical and orbital properties that contrast to those detected orbiting less evolved stars. Aims: We are conducting a radial velocity s
Externí odkaz:
http://arxiv.org/abs/1409.7429
Autor:
Pinfield, D. J., Gromadzki, M., Leggett, S. K., Gomes, J., Lodieu, N., Kurtev, R., Day-Jones, A. C., Ruiz, M. T., Cook, N. J., Morley, C. V., Marley, M. S., Marocco, F., Smart, R. L., Jones, H. R. A., Lucas, P. W., Beletsky, Y., Ivanov, V. D., Burningham, B., Jenkins, J. S., Cardoso, C., Frith, J., Clarke, J. R. A., Galvez-Ortiz, M. C., Zhang, Z.
We present a new Y dwarf, WISE J030449.03-270508.3, confirmed from a candidate sample designed to pick out low temperature objects from the WISE database. The new object is typed Y0pec following a visual comparison with spectral standards, and lies a
Externí odkaz:
http://arxiv.org/abs/1408.0284
Autor:
Wittenmyer, R. A., Tuomi, Mikko, Butler, R. P., Jones, H. R. A., Anglada-Escude, Guillem, Horner, Jonathan, Tinney, C. G., Marshall, J. P., Carter, B. D., Bailey, J., Salter, G. S., O'Toole, S. J., Wright, D., Crane, J. D., Schectman, S. A., Arriagada, P., Thompson, I., Minniti, D., Jenkins, J. S., Diaz, M.
We report the detection of GJ 832c, a super-Earth orbiting near the inner edge of the habitable zone of GJ 832, an M dwarf previously known to host a Jupiter analog in a nearly-circular 9.4-year orbit. The combination of precise radial-velocity measu
Externí odkaz:
http://arxiv.org/abs/1406.5587
Context: More than 50 exoplanets have been found around giant stars, revealing different properties when compared to planets orbiting solar-type stars. In particular, they are Super-Jupiters and are not found orbiting interior to $\sim$ 0.5 AU. Aims:
Externí odkaz:
http://arxiv.org/abs/1406.0884
Autor:
Gálvez-Ortiz, M. C., Kuznetsov, M., Clarke, J. R. A., Pavlenko, Ya. V., Folkes, S. L., Pinfield, D. J., Jones, H. R. A., Jenkins, J. S., Barnes, J. R., Burningham, B., Day-Jones, A. C., Martín, E. L., Pérez, A. E. García, del Burgo, C., Pokorny, R. S.
We present a study of age-related spectral signatures observed in 25 young low-mass objects that we have previously determined as possible kinematic members of five young moving groups: the Local Association (Pleiades moving group, age=20 - 150 Myr),
Externí odkaz:
http://arxiv.org/abs/1402.3479
Autor:
Barnes, J. R., Jenkins, J. S., Jones, H. R. A., Jeffers, S. V., Rojo, P., Arriagada, P., Jordan, A., Minniti, D., Tuomi, M., Pinfield, D., Anglada-Escude, G.
We present radial velocity measurements of a sample of M5V-M9V stars from our Red-Optical Planet Survey, ROPS, operating at 0.65-1.025 micron. Radial velocities for 15 stars, with r.m.s. precision down to 2.5 m/s over a week long time scale are achie
Externí odkaz:
http://arxiv.org/abs/1401.5350
Autor:
Jones, M. I., Jenkins, J. S.
CONTEXT: The recent discovery of three giant planets orbiting the extremely metal-poor stars HIP11952 and HIP13044 have challenged theoretical predictions of the core-accretion model. According to this, the metal content of the protoplanetary disk fr
Externí odkaz:
http://arxiv.org/abs/1401.0517
Autor:
Pinfield, D. J., Gomes, J., Day-Jones, A. C., Leggett, S. K., Gromadzki, M., Burningham, B., Ruiz, M. T., Kurtev, R., Cattermole, T., Cardoso, C., Lodieu, N., Faherty, J., Littlefair, S., Smart, R., Irwin, M., Clarke, J. R. A., Smith, L., Lucas, P. W., Galvez-Ortiz, M. C., Jenkins, J. S., Jones, H. R. A., Rebolo, R., Bejar, V. J. S., Gauza, B.
A method is defined for identifying late T and Y dwarfs in WISE down to low values of signal-to-noise. This requires a WISE detection only in the W2-band and uses the statistical properties of the WISE multi-frame measurements and profile fit photome
Externí odkaz:
http://arxiv.org/abs/1308.0495
Context: More than 40 planets have been found around giant stars, revealing a lack of systems orbiting interior to $\sim$ 0.6 AU. This observational fact contrasts with the planetary population around solar-type stars and has been interpreted as the
Externí odkaz:
http://arxiv.org/abs/1306.3939
We present the results of a study of the stellar activity in the solar neighborhood using complete kinematics (galactocentric velocities U,V,W) and the chromospheric activity index $\log R'_{\rm{HK}}$. We analyzed the average activity level near the
Externí odkaz:
http://arxiv.org/abs/1302.6935