Publications (108)
Kinematic structure in the young Sigma Orionis association
R. D. Jeffries, P. F. L. Maxted, J. M. Oliveira +1
Gaia-ESO Survey: global properties of clusters Trumpler 14 and 16 in the Carina Nebula
F. Damiani, A. Klutsch, R. D. Jeffries +31
The Gaia-ESO Survey: Structural and dynamical properties of the young cluster Chamaeleon I
G. G. Sacco, L. Spina, S. Randich +44
The Gaia-ESO Survey: Lithium depletion in the Gamma Velorum cluster and inflated radii in low-mass pre-main-sequence stars
R. D. Jeffries, R. J. Jackson, E. Franciosini +25
Measuring the Initial Mass Function of Low Mass Stars and Brown Dwarfs
R. D. Jeffries
A search for radius inflation among active M-dwarfs in Praesepe
R. J. Jackson, R. D. Jeffries, Constantine P. Deliyannis +2
A lithium depletion boundary age of 21 Myr for the Beta Pictoris moving group
A. S Binks, R. D. Jeffries
The Dynamics, Structure, and Fate of a Young Cluster During Gas Dispersal: Hectoschelle, Chandra, Spitzer, and Gaia Observations of CepOB3b
N. Karnath, J. K. Prchlik, R. A. Gutermuth +5
Pre-main-sequence isochrones -- III. The Cluster Collaboration isochrone server
Cameron P. M. Bell, Jon M. Rees, Tim Naylor +4
Close binary systems among very low mass stars and brown dwarfs
R. D. Jeffries, P. F. L. Maxted
The Gaia DR2 view of the Gamma Velorum cluster: resolving the 6D structure
E. Franciosini, G. G. Sacco, R. D. Jeffries +4
Lithium 6104A in Population II stars
A. Ford, R. D. Jeffries, B. Smalley +5
The discovery of low-mass pre main sequence stars in Cepheus OB3b
M. Pozzo, T. Naylor, R. D. Jeffries +1
The distance to the Orion Nebula Cluster
R. D. Jeffries
Can variability account for apparent age spreads in OB association colour-magnitude diagrams?
Ben Burningham, Tim Naylor, S. P. Littlefair +1
Spectroscopic confirmation of M-dwarf candidate members of the Beta Pictoris and AB Doradus Moving Groups
A. S. Binks, R. D. Jeffries
The Li Overabundance of J37: Diffusion or Accretion?
J. F. Ashwell, R. D. Jeffries, B. Smalley +3
Empirical isochrones and relative ages for young stars, and the radiative-convective gap
N. J. Mayne, Tim Naylor, S. P. Littlefair +2
The Gaia-ESO Survey: kinematical and dynamical study of four young open clusters
L. Bravi, E. Zari, G. G. Sacco +32
The Gaia-ESO Survey: Kinematic structure in the Gamma Velorum Cluster
R. D. Jeffries, R. J. Jackson, M. Cottaar +27
The Gaia-ESO Survey: the origin and evolution of s-process elements
L. Magrini, L. Spina, S. Randich +45
The low mass population of the Vela OB2 association from Gaia
Joseph J. Armstrong, Nicholas J. Wright, R. D. Jeffries
Low mass stars, brown dwarf candidates and the mass function of the young open cluster NGC 2547
R. D. Jeffries, Tim Naylor, C. R. Devey +1
Chromospheric activity among fast rotating M-dwarfs in the open cluster NGC 2516
R. J. Jackson, R. D. Jeffries
The effect of starspots on the radii of low-mass pre-main sequence stars
R. J. Jackson, R. D. Jeffries
Accretion-induced luminosity spreads in young clusters: evidence from stellar rotation
S. P. Littlefair, Tim Naylor, N. J. Mayne +2
Photometry and membership for low mass stars in the young open cluster NGC 2516
R. D. Jeffries, M. R. Thurston, N. C. Hambly
The Gaia-ESO Survey: the inner disk, intermediate-age open cluster Trumpler 23
J. C. Overbeek, E. D. Friel, P. Donati +33
Lithium in Blanco1: Implications for Stellar Mixing
R. D. Jeffries, D. J. James
Age spreads in star forming regions?
R. D. Jeffries
An L'-band survey for circumstellar disks around low-mass stars in the young sigma Orionis cluster
J. M. Oliveira, R. D. Jeffries, J. Th. van Loon
Membership, binarity and accretion among very low-mass stars and brown dwarfs of the Sigma Orionis cluster
M. J. Kenyon, R. D. Jeffries, Tim Naylor +2
X-rays from Open Clusters
R. D. Jeffries
On the relationship between the size and surface coverage of starspots on magnetically active low-mass stars
R. J. Jackson, R. D. Jeffries
XMM-Newton survey of the low-metallicity open cluster NGC 2516
S. Sciortino, G. Micela, F. Damiani +8
X-ray Source Populations in the Region of the Open Clusters NGC 6633 and IC 4756
K. R. Briggs, J. P. Pye, R. D. Jeffries +1
The Gaia-ESO Survey: metallicity of the Chamaeleon I star forming region
L. Spina, S. Randich, F. Palla +37
The Gaia-ESO Survey: the first abundance determination of the pre-main-sequence cluster Gamma Velorum
L. Spina, S. Randich, F. Palla +36
Rotation and activity in the solar-type stars of NGC 2547
R. D. Jeffries, E. J. Totten, D. J. James
Ages and Age Spreads in Young Stellar Clusters
R. D. Jeffries
Young stars and their circumstellar disks in the Sigma Orionis cluster
J. M. Oliveira, R. D. Jeffries, J. Th. van Loon +1
Pre-main-sequence Lithium Depletion
R. D. Jeffries
Rotation of young stars in Cepheus OB3b
S. P. Littlefair, Tim Naylor, N. J. Mayne +2
The Lithium Depletion Boundary as a Clock and Thermometer
R. D. Jeffries, T. Naylor
Identification of the Lithium Depletion Boundary and Age of the Southern Open Cluster Blanco 1
P. A. Cargile, D. J. James, R. D. Jeffries
New Methods for Determining the Ages of PMS Stars
Tim Naylor, N. J. Mayne, R. D. Jeffries +2
A Kinematically Unbiased Search for Nearby Young Stars in the Northern Hemisphere Selected Using SuperWASP Rotation Periods
A. S. Binks, R. D. Jeffries, P. F. L. Maxted
A Spitzer view of protoplanetary disks in the gamma Velorum cluster
Jesus Hernandez, Lee Hartmann, Nuria Calvet +4
The Gaia-ESO Survey and CSI 2264: Substructures, disks, and sequential star formation in the young open cluster NGC 2264
L. Venuti, L. Prisinzano, G. G. Sacco +21
The low-mass Initial Mass Function in the young cluster NGC 6611
J. M. Oliveira, R. D. Jeffries, J. Th. van Loon
Low Mass Stars and Brown Dwarfs around Sigma Orionis
M. J. Kenyon, R. D. Jeffries, T. Naylor
Are There Age Spreads in Star Forming Regions?
R. D. Jeffries
Spitzer Imaging of the Nearby Rich Young Cluster, Cep OB3b
Thomas S. Allen, Robert A. Gutermuth, Erin Kryukova +7
On the frequency of close binary systems among very low-mass stars and brown dwarfs
P. F. L. Maxted, R. D. Jeffries
Star Formation in the Eagle Nebula and NGC 6611
J. M. Oliveira, R. D. Jeffries, J. Th van Loon
Pre-main-sequence isochrones -- II. Revising star and planet formation timescales
Cameron P. M. Bell, Tim Naylor, N. J. Mayne +2
The Gaia-ESO Survey: Kinematics of seven Galactic globular clusters
C. Lardo, E. Pancino, M. Bellazzini +24
Pre-main-sequence isochrones -- I. The Pleiades benchmark
Cameron P. M. Bell, Tim Naylor, N. J. Mayne +2
The Gaia-ESO Survey: open clusters in Gaia-DR1 - a way forward to stellar age calibration
S. Randich, E. Tognelli, R. Jackson +42
The effect of starspots on the ages of low-mass stars determined from the lithium depletion boundary
R. J. Jackson, R. D. Jeffries
Elemental abundances in the Blanco 1 open cluster
A. Ford, R. D. Jeffries, B. Smalley
On the Nature of Collinder 121: Insights from the Low-Mass Pre-Main Sequence
Ben Burningham, Tim Naylor, R. D. Jeffries +1
The Gaia-ESO Survey: the present-day radial metallicity distribution of the Galactic disc probed by pre-main-sequence clusters
L. Spina, S. Randich, L. Magrini +35
Investigating coronal saturation and super-saturation in fast-rotating M-dwarf stars
R. D. Jeffries, R. J. Jackson, K. R. Briggs +2
The Gaia-ESO Survey: Discovery of a spatially extended low-mass population in the Vela OB2 association
G. G. Sacco, R. D. Jeffries, S. Randich +28
Circumstellar discs around solar-mass stars in NGC 6611
J. M. Oliveira, R. D. Jeffries, J. Th. van Loon +2
The Gaia-ESO Survey: CNO abundances in the open clusters Trumpler 20, NGC 4815, and NGC 6705
G. TautvaiÅ¡ienÄ, A. Drazdauskas, Å . Mikolaitis +30
The Gaia-ESO Survey: double, triple and quadruple-line spectroscopic binary candidates
T. Merle, S. Van Eck, A. Jorissen +35
Contamination and exclusion in the sigma Orionis young group
Ben Burningham, Tim Naylor, S. P. Littlefair +1
The Gaia-ESO Survey: Empirical determination of the precision of stellar radial velocities and projected rotation velocities
R. J. Jackson, R. D. Jeffries, J. Lewis +58
The inflated radii of M-dwarfs in the Pleiades
R. J. Jackson, Constantine P. Deliyannis, R. D. Jeffries
Synthesis of the Beryllium 3131A Spectral Region
Johanna F. Ashwell, R. D. Jeffries, B. Smalley
A lithium depletion boundary age of 22 Myr for NGC 1960
R. D. Jeffries, Tim Naylor, N. J. Mayne +2
Empirical classification of VLT/Giraffe stellar spectra in the wavelength range 6440-6810 A in the gamma Vel cluster, and calibration of spectral indices
F. Damiani, L. Prisinzano, G. Micela +23
The Gaia-ESO Survey: Stellar radii in the young open clusters NGC 2264, NGC 2547 and NGC 2516
R. J. Jackson, R. D. Jeffries, S. Randich +10
Membership, metallicity and lithium abundances for solar-type stars in NGC 6633
R. D. Jeffries, E. J. Totten, S. Harmer +1
Lithium in the Coma Berenices open cluster
A. Ford, R. D. Jeffries, D. J. James +1
The Gaia-ESO Survey: Properties of the intermediate age open cluster NGC 4815
E. D. Friel, P. Donati, A. Bragaglia +34
Low-mass members of the young cluster IC 4665 and pre-main-sequence lithium depletion
R. D. Jeffries, R. J. Jackson, D. J. James +1
The Gaia-ESO Survey: N-body modelling of the Gamma Velorum cluster
M. Mapelli, A. Vallenari, R. D. Jeffries +22
The age of Taurus - environmental effects on disc lifetimes
Jon M. Rees, T. Wilson, C. P. M. Bell +2
Circumstellar discs in the young sigma Orionis cluster
J. M. Oliveira, R. D. Jeffries, J. Th. van Loon +1
The radii of M-dwarfs in the young open cluster NGC 2516
R. J. Jackson, R. D. Jeffries, P. F. L. Maxted
Optimal photometry for colour-magnitude diagrams and its application to NGC 2547
Tim Naylor, E. J. Totten, R. D. Jeffries +3
Spectroscopic Evidence for Starspots on the Secondary Star of SS Cygni
N. A. Webb, T. Naylor, R. D. Jeffries
Are the spin axes of stars randomly aligned within a cluster?
R. J. Jackson, R. D. Jeffries
The discovery of a low mass, pre-main-sequence stellar association around gamma Velorum
M. Pozzo, R. D. Jeffries, T. Naylor +3
A survey for low mass spectroscopic binary stars in the young clusters around sigma Orionis and lambda Orionis
P. F. L. Maxted, R. D. Jeffries, J. M. Oliveira +2
No evidence for intense, cold accretion onto YSOs from measurements of Li in T-Tauri stars
Darryl J. Sergison, N. J. Mayne, Tim Naylor +2
Mass segregation in the young open cluster NGC 2547
S. P. Littlefair, Tim Naylor, R. D. Jeffries +2
The Lithium Depletion Boundary in NGC 2547 as a test of pre-main-sequence evolutionary models
R. D. Jeffries, J. M. Oliveira
Ages, Distances, and the Initial Mass Functions of Stellar Clusters
J. R. Stauffer, R. D. Jeffries, E. L. Martin +1
Beryllium Enhancement as Evidence for Accretion in a Lithium-Rich F Dwarf
J. F. Ashwell, R. D. Jeffries, B. Smalley +3
No disks around low-mass stars and brown dwarfs in the young sigma Orionis cluster?
J. M. Oliveira, R. D. Jeffries, M. J. Kenyon +2
The Gaia-ESO Survey: Revisiting the Li-rich giant problem
A. R. Casey, G. Ruchti, T. Masseron +48
The Gaia-ESO Survey: Chromospheric Emission, Accretion Properties, and Rotation in $γ$ Velorum and Chamaeleon I
A. Frasca, K. Biazzo, A. C. Lanzafame +33
The Gaia-ESO Survey: membership and Initial Mass Function of the Gamma Velorum cluster
L. Prisinzano, F. Damiani, G. Micela +23
The lithium depletion boundary and the age of NGC 2547
J. M. Oliveira, R. D. Jeffries, C. R. Devey +4
The Gaia-ESO Survey: A globular cluster escapee in the Galactic halo
K. Lind, S. E. Koposov, C. Battistini +37
Dust discs around intermediate mass and Sun-like stars in the 16 Myr old NGC 1960 open cluster
R. Smith, R. D. Jeffries