Search Results - "Homeier, D."

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    Models of very-low-mass stars, brown dwarfs and exoplanets by Allard, F., Homeier, D., Freytag, B.

    “…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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    A global cloud map of the nearest known brown dwarf by Crossfield, I. J. M., Biller, B., Schlieder, J. E., Deacon, N. R., Bonnefoy, M., Homeier, D., Allard, F., Buenzli, E., Henning, Th, Brandner, W., Goldman, B., Kopytova, T.

    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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    High-contrast imaging of Sirius A with VLT/SPHERE: looking for giant planets down to one astronomical unit by Vigan, A., Gry, C., Salter, G., Mesa, D., Homeier, D., Moutou, C., Allard, F.

    “…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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    Detection and characterization of two VLM binaries: LP 1033-31 and LP 877-72 by Karmakar, Subhajeet, Rajpurohit, A S, Allard, F, Homeier, D

    “…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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    A comparison of chemistry and dust cloud formation in ultracool dwarf model atmospheres by Helling, Ch, Ackerman, A., Allard, F., Dehn, M., Hauschildt, P., Homeier, D., Lodders, K., Marley, M., Rietmeijer, F., Tsuji, T., Woitke, P.

    “…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 by Rajpurohit, A S, Kumar, Vipin, Srivastava, Mudit K, Allard, F, Homeier, D, Dixit, Vaibhav, Patel, Ankita

    “…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 by Zhang, Z H, Pinfield, D J, Galvez-Ortiz, M C, Burningham, B, Lodieu, N, Marocco, F, Burgasser, A J, Day-Jones, A C, Allard, F, Jones, H RA, Homeier, D, Gomes, J, Smart, R L

    “…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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    THE PROPERTIES OF THE 500 K DWARF UGPS J072227.51-054031.2 AND A STUDY OF THE FAR-RED FLUX OF COLD BROWN DWARFS by LEGGETT, S. K, SAUMON, D, BURNINGHAM, Ben, DAY-JONES, A, FECLEY, B, ISHII, Miki, JONES, H. R. A, MAROCCO, F, PINFIELD, D. J, TAMURA, M, MARLEY, M. S, LODDERS, K, CANTY, J, LUCAS, P, SMART, R. L, TINNEY, C. G, HOMEIER, D, ALLARD, F

    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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    The properties of the T8.5p dwarf Ross 458C by Burningham, Ben, Leggett, S. K., Homeier, D., Saumon, D., Lucas, P. W., Pinfield, D. J., Tinney, C. G., Allard, F., Marley, M. S., Jones, H. R. A., Murray, D. N., Ishii, M., Day-Jones, A., Gomes, J., Zhang, Z. H.

    “…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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    Primeval very low-mass stars and brown dwarfs – III. The halo transitional brown dwarfs by Zhang (张曾华), Z H, Pinfield, D J, Gálvez-Ortiz, M C, Homeier, D, Burgasser, A J, Lodieu, N, Martín, E L, Zapatero Osorio, M R, Allard, F, Jones, H R A, Smart, R L, López Martí, B, Burningham, B, Rebolo, R

    “…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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    The discovery of an M4+T8.5 binary system by Burningham, Ben, Pinfield, D. J., Leggett, S. K., Tinney, C. G., Liu, M. C., Homeier, D., West, A. A., Day-Jones, A., Huelamo, N., Dupuy, T. J., Zhang, Z., Murray, D. N., Lodieu, N., Barrado y Navascués, D., Folkes, S., Galvez-Ortiz, M. C., Jones, H. R. A., Lucas, P. W., Calderon, M. Morales, Tamura, M.

    “…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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    Exploring the substellar temperature regime down to similar to 550K by Burningham, Ben, Pinfield, D J, Leggett, S K, Tamura, M, Lucas, P W, Homeier, D, Day-Jones, A, Jones, HRA, Clarke, JRA, Ishii, M, Kuzuhara, M, Lodieu, N, Osorio, Zapatero, Venemans, B P, Mortlock, D J, Barrado y Navascues, D, Martin, EL, Magazzu, A

    “…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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    Hunting for brown dwarf binaries and testing atmospheric models with X-Shooter by Manjavacas, E., Goldman, B., Alcalá, J. M., Zapatero-Osorio, M. R., Béjar, V. J. S., Homeier, D., Bonnefoy, M., Smart, R. L., Henning, T., Allard, F.

    “…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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    Close binary EHB stars from SPY by Napiwotzki, R, Karl, C, Lisker, T, Heber, U, Christlieb, N, Reimers, D, Nelemans, G, Homeier, D

    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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