155 citations · 568 across the 27 of their papers we have counts for
25 papers
Identifying and characterizing ultracool dwarfs ejected from post-encounter disintegrating systems
Alexandra K. P. Yip, Radostin Kurtev, David J. Pinfield +3
Disintegrating multiple systems have been previously discovered from kinematic studies of the catalogue. They are presumably the result of dynamical encounters taki…
VIRAC: The VVV Infrared Astrometric Catalogue
L. C. Smith, P. W. Lucas, R. Kurtev +12
We present VIRAC version 1, a near-infrared proper motion and parallax catalogue of the VISTA VVV survey for 312,587,642 unique sources averaged across all overlapping pawprint and…
Searching for Faint Comoving Companions to the Centauri system in the VVV Survey Infrared Images
J. C. Beamin, D. Minniti, J. B. Pullen +7
The VVV survey has observed the southern disk of the Milky Way in the near infrared, covering 240 deg in the filters. We search the VVV Survey images in a 19…
Ultracool dwarf benchmarks with \emph{Gaia} primaries
F. Marocco, D. J. Pinfield, N. J. Cook +14
We explore the potential of \emph{Gaia} for the field of benchmark ultracool/brown dwarf companions, and present the results of an initial search for metal-rich/metal-poor systems.…
Triggered massive star formation associated with the bubble HII region Sh2-39 (N5)
N. U. Duronea, C. E. Cappa, L. Bronfman +2
Aiming at studying the physical properties of Galactic IR bubbles and to explore their impact in triggering massive star formation, we perform a multiwavelength analysis of the bub…
The Structure of the Young Star Cluster NGC 6231. I. Stellar Population
Michael A. Kuhn, Nicolás Medina, Konstantin V. Getman +4
NGC 6231 is a young cluster (age ~2-7 Myr) dominating the Sco OB1 association (distance ~1.59 kpc) with ~100 O and B stars and a large pre-main-sequence stellar population. We comb…
Near-IR trigonometric parallaxes of nearby stars in the Galactic plane using the VVV
J. C. Beamin, R. A. Mendez, R. L. Smart +7
We use the multi-epoch K band observations, covering a 5 years baseline to obtain milli and sub-milli arcsec precision astrometry for a sample of eighteen previously…
Low-resolution near-infrared spectroscopic signatures of unresolved ultracool companions to M dwarfs
N. J. Cook, D. J. Pinfield, F. Marocco +14
We develop a method to identify the spectroscopic signature of unresolved L-dwarf ultracool companions, which compares the spectra of candidates and their associated control stars…
Young Stellar Clusters Containing Massive Young Stellar Objects in the VVV Survey
J. Borissova, S. Ramírez Alegría, J. Alonso +17
The purpose of this research is to study the connection of global properties of eight young stellar clusters projected in the Vista Variables in the Via Lactea (VVV) ESO Large Publ…
High proper motion objects towards the inner Milky Way: characterisation of newly identified nearby stars from the VISTA Variables in the Via Lactea Survey
M. Gromadzki, R. Kurtev, J. C. Beamin +10
The census of the Solar neighbourhood is still incomplete, as demonstrated by recent discoveries of many objects within 5-10 pc from the Sun. The area around the mid-plane and bulg…
VVV High proper motion stars I. The catalogue of bright Ks < 13.5 stars
R. Kurtev, M. Gromadzki, J. C. Beamin +14
Knowledge of the stellar content near the Sun is important for a broad range of topics ranging from the search for planets to the study of Milky Way structure. The most powerful me…
Identifying the ejected population from disintegrating multiple systems
A. K. P. Yip, D. J. Pinfield, R. Kurtev +2
Kinematic studies of the Hipparcos catalogue have revealed associations that are best explained as disintegrating multiple systems, presumably resulting from a dynamical encounter…
Massive open star clusters using the VVV survey V. Young clusters with an OB stellar population
S. Ramírez Alegría, J. Borissova, A. -N. Chené +6
The ESO public survey VISTA Variables in the Vía Láctea (VVV) has contributed with deep multi-epoch photometry of the Galactic bulge and the adjacent part of the disk over 526 squa…
A Method for Selecting M dwarfs with an Increased Likelihood of Unresolved Ultra-cool Companionship
N. J. Cook, D. J. Pinfield, F. Marocco +15
Locating ultra-cool companions to M dwarfs is important for constraining low-mass formation models, the measurement of sub-stellar dynamical masses and radii, and for testing ultra…
Discovery of a brown dwarf companion to the A3V star β Circini
L. C. Smith, P. W. Lucas, C. Contreras Peña +14
We report the discovery of an L dwarf companion to the A3V star β Circini. VVV J151721.49-585131.5, or β Cir B, was identified in a proper motion and parallax catalogue of the Vist…
Spectro-photometric characterization of high proper motion sources from WISE
J. C. Beamín, V. D. Ivanov, D. Minniti +7
The census of the solar neighborhood is almost complete for stars and becoming more complete in the brown dwarf regime. Spectroscopic, photometric and kinematic characterization of…
Temperature constraints on the coldest brown dwarf known WISE 0855-0714
J. C. Beamín, V. D. Ivanov, A. Bayo +10
Context. Nearby isolated planetary mass objects are beginning to be discovered, but their individual properties are poorly constrained because their low surface temperatures and st…
Discovery of a new Y dwarf: WISE J030449.03-270508.3
D. J. Pinfield, M. Gromadzki, S. K. Leggett +21
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 Y…
New galactic star clusters discovered in the VVV survey. Candidates projected on the inner disk and bulge
J. Borissova, A. -N. Chené, S. Ramírez Alegría +21
VISTA Variables in the Vía Láctea (VVV) is one of six ESO Public Surveys using the 4 meter Visible and Infrared Survey Telescope for Astronomy (VISTA). The VVV survey covers the Mi…
Proper motions and brown dwarfs with the VVV survey
J. C. Beamín, V. D. Valentin, R. Kurtev +3
The Vista Variables in the Vía Láctea survey (VVV) is a near-IR ESO public survey devoted to study the Galactic bulge and southern inner disk covering 560 deg on the sky. This…
Massive open star clusters using the VVV survey III: A young massive cluster at the far edge of the Galactic bar
S. Ramírez Alegría, J. Borissova, A. N. Chené +14
Context: Young massive clusters are key to map the Milky Way's structure, and near-IR large area sky surveys have contributed strongly to the discovery of new obscured massive stel…
VVV High Proper Motion Survey
M. Gromadzki, R. Kurtev, S. Folkes +7
Here we present survey of proper motion stars towards the Galactic Bulge and an adjacent plane region base on VISTA-VVV data. The searching method based on cross-matching photometr…
Discovery of New Companions to High Proper Motion Stars from the VVV Survey
Valentin D. Ivanov, Dante Minniti, Maren Hempel +14
[abridged] The severe crowding in the direction of the inner Milky Way suggests that the census of stars within a few tens of parsecs in that direction may not be complete. We sear…
One more neighbor: The first brown dwarf in the VVV survey
J. C. Beamín, D. Minniti, M. Gromadzki +6
Context. The discovery of brown dwarfs (BDs) in the solar neighborhood and young star clusters has helped to constraint the low-mass end of the stellar mass function and the initia…