Search Results - "Homeier, D."
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1
Models of very-low-mass stars, brown dwarfs and exoplanets
Published in Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences (13-06-2012)“…Within the next few years, GAIA and several instruments aiming to image extrasolar planets will be ready. In parallel, low-mass planets are being sought around…”
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2
A global cloud map of the nearest known brown dwarf
Published in Nature (London) (30-01-2014)“…A map of the surface of a brown dwarf reveals features that suggest patchy clouds, providing the mechanism for the dispersal of atmospheric dust as brown…”
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3
High-contrast imaging of Sirius A with VLT/SPHERE: looking for giant planets down to one astronomical unit
Published in Monthly notices of the Royal Astronomical Society (21-11-2015)“…Sirius has always attracted a lot of scientific interest, especially after the discovery of a companion white dwarf at the end of the 19th century. Very early…”
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4
Detection and characterization of two VLM binaries: LP 1033-31 and LP 877-72
Published in Monthly notices of the Royal Astronomical Society (01-10-2020)“…ABSTRACT Using the high-resolution near-infrared adaptive optics imaging from the NaCo instrument at the Very Large Telescope, we report the discovery of a new…”
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5
A comparison of chemistry and dust cloud formation in ultracool dwarf model atmospheres
Published in Monthly notices of the Royal Astronomical Society (21-12-2008)“…The atmospheres of substellar objects contain clouds of oxides, iron, silicates and other refractory condensates. Water clouds are expected in the coolest…”
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First results from MFOSC-P: low-resolution optical spectroscopy of a sample of M dwarfs within 100 parsecs
Published in Monthly notices of the Royal Astronomical Society (2020)“…ABSTRACT Mt Abu Faint Object Spectrograph and Camera (MFOSC-P) is an in-house-developed instrument for the Physical Research Laboratory (PRL) 1.2 m telescope…”
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Primeval very low-mass stars and brown dwarfs – I. Six new L subdwarfs, classification and atmospheric properties
Published in Monthly notices of the Royal Astronomical Society (01-01-2017)“…We have conducted a search for L subdwarf candidates within the photometric catalogues of the UKIRT Infrared Deep Sky Survey and Sloan Digital Sky Survey. Six…”
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Primeval very low-mass stars and brown dwarfs – IV. New L subdwarfs, Gaia astrometry, population properties, and a blue brown dwarf binary
Published in Monthly notices of the Royal Astronomical Society (11-11-2018)“…We present 27 new L subdwarfs and classify five of them as esdL and 22 as sdL. Our L subdwarf candidates were selected with the UKIRT Infrared Deep Sky Survey…”
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THE PROPERTIES OF THE 500 K DWARF UGPS J072227.51-054031.2 AND A STUDY OF THE FAR-RED FLUX OF COLD BROWN DWARFS
Published in The Astrophysical journal (01-04-2012)“…We present i and z photometry for 25 T dwarfs and 1 L dwarf. Combined with published photometry, the data show that the i - z, z - Y, and z - J colors of T…”
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Discovery of the benchmark metal-poor T8 dwarf BD +01° 2920B
Published in Monthly notices of the Royal Astronomical Society (01-05-2012)“…We have searched the Wide-field Infrared Survey Explorer first data release for widely separated (≤10 000 au) late T dwarf companions to Hipparcos and Gliese…”
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The properties of the T8.5p dwarf Ross 458C
Published in Monthly notices of the Royal Astronomical Society (11-07-2011)“…We present near-infrared photometry and spectroscopy, and warm-Spitzer IRAC photometry of the young very cool T dwarf Ross 458C, which we have typed as T8.5p…”
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76 T dwarfs from the UKIDSS LAS: benchmarks, kinematics and an updated space density
Published in Monthly notices of the Royal Astronomical Society (21-07-2013)“…We report the discovery of 76 new T dwarfs from the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS). Near-infrared broad- and narrow-band…”
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Primeval very low-mass stars and brown dwarfs – III. The halo transitional brown dwarfs
Published in Monthly notices of the Royal Astronomical Society (01-09-2018)“…We report the discovery of an esdL3 subdwarf, ULAS J020858.62+020657.0, and a usdL4.5 subdwarf, ULAS J230711.01+014447.1. They were identified as L subdwarfs…”
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Exploring the substellar temperature regime down to ∼550 K
Published in Monthly notices of the Royal Astronomical Society (21-11-2008)“…We report the discovery of three very late T dwarfs in the UKIRT Infrared Deep Sky Survey (UKIDSS) Third Data Release: ULAS J101721.40+011817.9 (ULAS1017),…”
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15
The discovery of an M4+T8.5 binary system
Published in Monthly notices of the Royal Astronomical Society (21-05-2009)“…We report the discovery of a T8.5 dwarf, which is a companion to the M4 dwarf Wolf 940. At a distance of 12.50+0.75−0.67 pc, the angular separation of 32…”
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16
Exploring the substellar temperature regime down to similar to 550K
Published in Monthly notices of the Royal Astronomical Society (21-11-2008)“…We report the discovery of three very late T dwarfs in the UKIRT Infrared Deep Sky Survey (UKIDSS) Third Data Release: ULAS J101721.40+011817.9 (ULAS1017),…”
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17
Hunting for brown dwarf binaries and testing atmospheric models with X-Shooter
Published in Monthly notices of the Royal Astronomical Society (11-01-2016)“…The determination of the brown dwarf binary fraction may contribute to the understanding of the substellar formation mechanisms. Unresolved brown dwarf…”
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Fifteen new T dwarfs discovered in the UKIDSS Large Area Survey
Published in Monthly notices of the Royal Astronomical Society (11-10-2008)“…We present the discovery of 15 new T2.5–T7.5 dwarfs (with estimated distances ∼24–93 pc), identified in the first three main data releases of the United…”
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A very cool brown dwarf in UKIDSS DR1
Published in Monthly notices of the Royal Astronomical Society (11-11-2007)“…We report the discovery of a very cool brown dwarf, ULAS J003402.77−005206.7 (ULAS J0034−00), identified in the UKIRT Infrared Deep Sky Survey First Data…”
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20
Close binary EHB stars from SPY
Published in Astrophysics and space science (01-01-2004)“…Issue Title: Extreme Horizontal Branch Stars and Related Objects We present the results of a radial velocity (RV) survey of 46 subdwarf B (sdB) and 23…”
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