Search Results - "Schaefer, H G"

Dynamical Masses of Low-mass Stars in the Taurus and Ophiuchus Star-forming Regions by Simon, M., Guilloteau, S., Folco, E. Di, Dutrey, A., Grosso, N., Piétu, V., Chapillon, E., Prato, L., Schaefer, G. H., Rice, E., Boehler, Y.

“…We report new dynamical masses for five pre-main sequence (PMS) stars in the L1495 region of the Taurus star-forming region (SFR) and six in the L1688 region…”
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On the Nature of the T Tauri Triple System by Beck, Tracy L., Schaefer, G. H., Guilloteau, S., Simon, M., Dutrey, A., Folco, E. Di, Chapillon, E.

“…We present a multiwavelength analysis to reveal the nature of the enigmatic T Tauri triple star system. New optical and infrared measurements are coupled with…”
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Star-crossed Lovers DI Tau A and B: Orbit Characterization and Physical Properties Determination by Tang, Shih-Yun, Stahl, Asa G., Prato, L., Schaefer, G. H., Johns-Krull, Christopher M., Skiff, Brian A., Beichman, Charles A., Uyama, Taichi

“…Abstract The stellar companion to the weak-line T Tauri star DI Tau A was first discovered by the lunar occultation technique in 1989 and was subsequently…”
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Sites of Planet Formation in Binary Systems. I. Evidence for Disk−Orbit Alignment in the Close Binary FO Tau by Tofflemire, Benjamin M., Prato, Lisa, Kraus, Adam L., Segura-Cox, Dominique, Schaefer, G. H., Akeson, Rachel, Andrews, Sean, Jensen, Eric L. N., Johns-Krull, Christopher M., Zanazzi, J. J., Simon, M.

“…Abstract Close binary systems present challenges to planet formation. As binary separations decrease, so do the occurrence rates of protoplanetary disks in…”
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The expanding fireball of Nova Delphini 2013 by Schaefer, G. H., Brummelaar, T. ten, Gies, D. R., Farrington, C. D., Kloppenborg, B., Chesneau, O., Monnier, J. D., Ridgway, S. T., Scott, N., Tallon-Bosc, I., McAlister, H. A., Boyajian, T., Maestro, V., Mourard, D., Meilland, A., Nardetto, N., Stee, P., Sturmann, J., Vargas, N., Baron, F., Ireland, M., Baines, E. K., Che, X., Jones, J., Richardson, N. D., Roettenbacher, R. M., Sturmann, L., Turner, N. H., Tuthill, P., van Belle, G., von Braun, K., Zavala, R. T., Banerjee, D. P. K., Ashok, N. M., Joshi, V., Becker, J., Muirhead, P. S.

“…High spatial resolution is needed to study the early development of a nova; here measurements of the angular size and radial velocity of Nova Delphini 2013…”
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ORBIT AND STELLAR PROPERTIES OF THE YOUNG TRIPLE V807 Tau by SCHAEFER, G. H, PRATO, L, SIMON, M, ZAVALA, R. T

“…We present new orbital measurements of the pre-main-sequence triple system, V807 Tau, using adaptive optics imaging at the Keck Observatory. We computed an…”
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Orbital Elements and Stellar Parameters of the Active Binary UX Arietis by Hummel, C. A., Monnier, J. D., Roettenbacher, R. M., Torres, G., Henry, G. W., Korhonen, H., Beasley, A., Schaefer, G. H., Turner, N. H., Brummelaar, T. Ten, Farrington, C. D., Sturmann, J., Sturmann, L., Baron, F., Kraus, S.

“…Stellar activity observed as large surface spots, radio flares, or emission lines is often found in binary systems. UX Arietis exhibits these signs of…”
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Spectral Energy Distributions of Be and Other Massive Stars by Touhami, Y., Richardson, N. D., Gies, D. R., Schaefer, G. H., Boyajian, T. S., Williams, S. J., Grundstrom, E. D., McSwain, M. V., Clemens, D. P., Taylor, B.

“…We present spectrophotometric data from 0.4 μm to 4.2 μm for bright, northern sky, Be stars and several other types of massive stars. Our goal is to use these…”
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Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array by White, T R, Huber, D, Mann, A W, Casagrande, L, Grunblatt, S K, Justesen, A B, Silva Aguirre, V, Bedding, T R, Ireland, M J, Schaefer, G H, Tuthill, P G

“…Abstract Debate over the planet occurrence rates around intermediate-mass stars has hinged on the accurate determination of masses of evolved stars, and has…”
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A High Spatial Resolution Infrared View of the T Tauri Multiple System by Beck, Tracy L, Schaefer, G. H, Simon, M, Prato, L, Stoesz, J. A, Howell, R. R

“…We present the results of our monitoring study of the IR photometric and spectroscopic variability of the T Tau multiple system. We also present data on the…”
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MEASURED DIAMETERS OF TWO F STARS IN THE β PIC MOVING GROUP by SIMON, M, SCHAEFER, G. H

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No Sun-like dynamo on the active star ζ Andromedae from starspot asymmetry by Roettenbacher, R. M., Monnier, J. D., Korhonen, H., Aarnio, A. N., Baron, F., Che, X., Harmon, R. O., Kővári, Zs, Kraus, S., Schaefer, G. H., Torres, G., Zhao, M., ten Brummelaar, T. A., Sturmann, J., Sturmann, L.

“…Infrared interferometry imaging of the old, magnetically active star ζ Andromedae reveals an asymmetric distribution of starspots, unlike the north–south…”
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The TWA 3 Young Triple System: Orbits, Disks, Evolution by Kellogg, Kendra, Prato, L., Torres, Guillermo, Schaefer, G. H., Avilez, I., Ruíz-Rodríguez, D., Wasserman, L. H., Bonanos, Alceste Z., Guenther, E. W., Neuhäuser, R., Levine, S. E., Bosh, A. S., Morzinski, Katie M., Close, Laird, Bailey, Vanessa, Hinz, Phil, Males, Jared R.

“…We have characterized the spectroscopic orbit of the TWA 3A binary and provide preliminary families of probable solutions for the TWA 3A visual orbit, as well…”
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The Infrared Continuum Sizes of Be Star Disks by Touhami, Y, Gies, D. R, Schaefer, G. H

“…We present an analysis of the near-infrared continuum emission from the circumstellar gas disks of Be stars using a radiative transfer code for a parameterized…”
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A Millimeter-wave Interferometric Study of Dust and CO Disks Around Late Spectral Type Stars in Taurus-Auriga by Schaefer, G. H, Dutrey, A, Guilloteau, S, Simon, M, White, R. J

“…We present a new millimeter survey of 23 pre-main-sequence stars in the Taurus-Auriga star-forming region. The main goal of the project was to identify…”
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AB Dor Moving Group Stars Resolved with the CHARA Array by Schaefer, G. H., White, R. J., Baines, E. K., Boyajian, T. S., Brummelaar, T. A. ten, Farrington, C. D., Sturmann, J., Sturmann, L., Turner, N. H.

“…We present interferometric measurements obtained with the CHARA Array of 13 adolescent-age stars in nearby moving groups. The motivation was to spatially…”
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THE QUADRUPLE PRE-MAIN-SEQUENCE SYSTEM LkCa 3: IMPLICATIONS FOR STELLAR EVOLUTION MODELS by Torres, Guillermo, Ruiz-Rodriguez, Dary, BADENAS, MARIONA, Prato, L, Schaefer, G H, Wasserman, Lawrence H, Mathieu, Robert D, Latham, David W

“…We report the discovery that the pre-main-sequence (PMS) object LkCa 3 in the Taurus-Auriga star-forming region is a hierarchical quadruple system of M stars…”
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Optical interferometry of early-type stars with PAVO@CHARA - I. Fundamental stellar properties by Maestro, V., Che, X., Huber, D., Ireland, M. J., Monnier, J. D., White, T. R., Kok, Y., Robertson, J. G., Schaefer, G. H., Brummelaar, T. A. Ten, Tuthill, P. G.

“…We present interferometric observations of seven main-sequence and three giant stars with spectral types from B2 to F6 using the Precision Astronomical Visible…”
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A CHARA ARRAY SURVEY OF CIRCUMSTELLAR DISKS AROUND NEARBY Be-TYPE STARS by Touhami, Y, Gies, D R, Schaefer, G H, McAlister, H A, Ridgway, S T, Richardson, N D, Matson, R, Grundstrom, E D, ten Brummelaar, T A, Goldfinger, P J, Sturmann, L, Sturmann, J, Turner, N H, Farrington, C

“…We report on a high angular resolution survey of circumstellar disks around 24 northern sky Be stars. The K-band continuum survey was made using the CHARA…”
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Orbital and evolutionary constraints on the planet hosting binary GJ 86 from the Hubble Space Telescope by Farihi, J., Bond, Howard E., Dufour, P., Haghighipour, N., Schaefer, G. H., Holberg, J. B., Barstow, M. A., Burleigh, M. R.

“…This paper presents new observations of the planet-hosting, visual binary GJ 86 (HR 637) using the Hubble Space Telescope. Ultraviolet and optical imaging with…”
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