Zobrazeno 1 - 10
of 543
pro vyhledávání: '"Pinfield D."'
Autor:
Cooper, W. J., Jones, H. R. A., Smart, R. L., Folkes, S. L., Caballero, J. A., Marocco, F., Ortiz, M. C. Gálvez, Burgasser, A. J., Kirkpatrick, J. D., Sarro, L. M., Burningham, B., Cabrera-Lavers, A., Tremblay, P. E., Reylé, C., Lodieu, N., Zhang, Z. H., Cook, N. J., Faherty, J. F., García-Álvarez, D., Montes, D., Pinfield, D. J., Rajpurohit, A. S., Shi, J.
As part of our comprehensive, ongoing characterisation of the low-mass end of the main sequence in the Solar neighbourhood, we used the OSIRIS instrument at the 10.4 m Gran Telescopio Canarias to acquire low- and mid-resolution (R$\approx$300 and R$\
Externí odkaz:
http://arxiv.org/abs/2409.03706
Autor:
Baig, Sayan, Smart, R. L., Jones, Hugh R. A., Gagné, Jonathan, Pinfield, D. J., Cheng, Gemma, Moranta, Leslie
We present the Ultracool Dwarf Companion Catalogue of 278 multiple systems, 32 of which are newly discovered, each with at least one spectroscopically confirmed Ultracool Dwarf, within a 100 pc volume-limited sample. This catalogue is compiled using
Externí odkaz:
http://arxiv.org/abs/2408.07024
Autor:
Zhang, Z. H., Raddi, R., Burgasser, A. J., Casewell, S. L., Smart, R. L., Galvez-Ortiz, M. C., Jones, H. R. A., Baig, S., Lodieu, N., Gauza, B., Pavlenko, Ya. V., Jiao, Y. F., Zhao, Z. K., Zhou, S. Y., Pinfield, D. J.
We report the discovery of five white dwarf + ultracool dwarf systems identified as common proper motion wide binaries in the Gaia Catalogue of Nearby Stars. The discoveries include a white dwarf + L subdwarf binary, VVV 1256-62AB, a gravitationally
Externí odkaz:
http://arxiv.org/abs/2407.19219
Autor:
Egea, E. González, Raddi, R., Koester, D., Rogers, L. K., Marocco, F., Cooper, W. J., Beamin, J. C., Burningham, B., Day-Jones, A., Forbrich, J., Pinfield, D. J.
Spectroscopic observations of white dwarfs reveal that many of them are polluted by exoplanetary material, whose bulk composition can be uniquely probed this way. We present a spectroscopic and photometric analysis of the DA white dwarf WDJ181417.84$
Externí odkaz:
http://arxiv.org/abs/2012.05731
Autor:
Marocco, F., Smart, R. L., Mamajek, E. E., Sarro, L. M., Burgasser, A. J., Caballero, J. A., Rees, J. M., Caselden, D., Cruz, K. L., Van Linge, R., Pinfield, D. J.
We present ten new ultra-cool dwarfs in seven wide binary systems discovered using $\textit{Gaia}$ DR2 data, identified as part of our $\textit{Gaia}$ Ultra-Cool Dwarf Sample project. The seven systems presented here include an L1 companion to the G5
Externí odkaz:
http://arxiv.org/abs/2004.04132
Publikováno v:
EPJ Web of Conferences, Vol 47, p 09002 (2013)
Current planet hunting methods using the radial velocity method are limited to observing middle-aged main-sequence stars where the signatures of stellar activity are much less than on young stars that have just arrived on the main-sequence. In this w
Externí odkaz:
https://doaj.org/article/7470982c2e07415a92eb03f8bd645439
Publikováno v:
EPJ Web of Conferences, Vol 47, p 06005 (2013)
We present results from our search for cool white dwarfs in the WTS (WFCAM Transit Survey). Repeat observations starting in 2007 allowed to produce deep stacked images in J and measure proper motions. We combine this with deep optical imaging to sele
Externí odkaz:
https://doaj.org/article/52fcd66c4f2a455da54e779f750bbf8a
Autor:
Minniti D., Tuomi M., Jordán A., Arriagada P., Rojo P., Jones H.R.A., Jenkins J.S., Barnes J.R., Jeffers S.V., Pinfield D.
Publikováno v:
EPJ Web of Conferences, Vol 47, p 05002 (2013)
We present radial velocity results from our Red Optical Planet Survey (ROPS), aimed at detecting low-mass planets orbiting mid-late M dwarfs. The ∼10 ms−1 precision achieved over 2 consecutive nights with the MIKE spectrograph at Magellan Clay is
Externí odkaz:
https://doaj.org/article/095f05c676af412c97edb6c4ecb2541c
Autor:
Murgas F., Martín E., Koppenhoefer J., Cruz P., Cappetta M., Birkby J., Barrado D., Pinfield D., Sipőcz B., Hodgkin S., Kovács Gábor, Nefs B., Saglia R., Zendejas J.
Publikováno v:
EPJ Web of Conferences, Vol 47, p 01002 (2013)
The WFCAM Transit Survey (WTS) is a near-infrared transit survey running on the United Kingdom Infrared Telescope (UKIRT). We conduct Monte Carlo transit injection and detection simulations for short period (
Externí odkaz:
https://doaj.org/article/f79683be2cac485690cf292a090ccb3e
Autor:
Keller C.-U., Pinfield D., Doel P., Cavarroc C., Hough J., Stam D., Galicher R., Tinetti G., Schneider J., Mawet D., Baudoz P., Boccaletti A., Beuzit J.-L., Udry S., Ferrari A., Martin E., Ménard F., Sein E.
Publikováno v:
EPJ Web of Conferences, Vol 16, p 07002 (2011)
SEE COAST stands for Super Earth Explorer – Coronagraphic Off-Axis Space Telescope. The concept was initially proposed to ESA for Cosmic Vision. None of the direct detection exoplanet proposals were selected in 2007 and we are now pursuing our effo
Externí odkaz:
https://doaj.org/article/f13f08b6e7fd4786810f877ead120e3d