Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Lacasse, M. G."'
Autor:
Perrin, G., Ridgway, S. T., Lacour, S., Haubois, X., Thiebaut, E., Berger, J. P., Lacasse, M. G., Millan-Gabet, R., Monnier, J. D., Pedretti, E., Ragland, S., Traub, W.
Publikováno v:
A&A 642, A82 (2020)
We report Multi-telescope interferometric measurements taken with the Interferometric Optical Telescope Array (IOTA) to provide imagery of the LPV Mira in the H-band. This wavelength region is well suited to studying mass loss given the low continuum
Externí odkaz:
http://arxiv.org/abs/2008.09801
Autor:
Pedretti, E., Monnier, J. D., Lacour, S., Traub, W. A., Danchi, W. C., Tuthill, P. G., Thureau, N. D., Millan-Gabet, R., Berger, J-P., Lacasse, M. G., Schuller, P. A., Schloerb, F. P., Carleton, N. P.
We have detected asymmetry in the symbiotic star CH Cyg through the measurement of precision closure-phase with the IONIC beam combiner, at the IOTA interferometer. The position of the asymmetry changes with time and is correlated with the phase of t
Externí odkaz:
http://arxiv.org/abs/0905.0120
Autor:
Ragland, S., Coroller, H. Le, Pluzhnik, E., Cotton, W. D., Danchi, W. C., Monnier, J. D., Traub, W. A., Willson, L. A., Berger, J. -P., Lacasse, M. G.
We report imaging observations of the symbotic long-period Mira variable R Aquarii (R Aqr) at near-infrared and radio wavelengths. The near-infrared observations were made with the IOTA imaging interferometer in three narrow-band filters centered at
Externí odkaz:
http://arxiv.org/abs/0801.3488
Autor:
Zhao, M., Monnier, J. D., Torres, G., Boden, A. F., Claret, A., Millan-Gabet, R., Pedretti, E., Berger, J. -P., Traub, W. A., Schloerb, F. P., Carleton, N. P., Kern, P., Lacasse, M. G., Malbet, F., Perraut, K.
Publikováno v:
Astrophys.J.659:626-641,2007
Lambda Virginis (LamVir) is a well-known double-lined spectroscopic Am binary with the interesting property that both stars are very similar in abundance but one is sharp-lined and the other is broad-lined. We present combined interferometric and spe
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612135
Autor:
Monnier, J. D., Barry, R. K., Traub, W. A., Lane, B. F., Akeson, R. L., Ragland, S., Schuller, P. A., Coroller, H. Le, Berger, J. P., Millan-Gabet, R., Pedretti, E., Schloerb, F. P., Koresko, C., Carleton, N. P., Lacasse, M. G., Kern, P., Malbet, F., Perraut, K., Kuchner, M. J., Muterspaugh, M. W.
Publikováno v:
Astrophys.J.647:L127-L130,2006
Following the recent outburst of the recurrent nova RS Oph on 2006 Feb 12, we measured its near-infrared size using the IOTA, Keck, and PTI Interferometers at multiple epochs. The characteristic size of ~3 milliarcseconds hardly changed over the firs
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607399
Autor:
Ragland, S., Traub, W. A., Berger, J. -P., Danchi, W. C., Monnier, J. D., Willson, L. A., Carleton, N. P., Lacasse, M. G., Millan-Gabet, R., Pedretti, E., Schloerb, F. P., Cotton, W. D., Townes, C. H., Brewer, M., Haguenauer, P., Kern, P., Labeye, P., Malbet, F., Malin, D., Pearlman, M., Perraut, K., Souccar, K., Wallace, G.
Publikováno v:
Astrophys.J.652:650-660,2006
We have measured non-zero closure phases for about 29% of our sample of 56 nearby Asymptotic Giant Branch (AGB) stars, using the 3-telescope Infrared Optical Telescope Array (IOTA) interferometer at near-infrared wavelengths (H band) and with angular
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607156
Autor:
Millan-Gabet, R., Monnier, J. D., Berger, J. -P., Traub, W. A., Schloerb, F. P., Pedretti, E., Benisty, M., Carleton, N. P., Haguenauer, P., Kern, P., Labeye, P., Lacasse, M. G., Malbet, F., Perraut, K., Pearlman, M., Thureau, N.
Publikováno v:
Astrophys.J. 645 (2006) L77-L80
We report on the detection of localized off-center emission at 1-4 AU in the circumstellar environment of the young stellar object AB Aurigae. We used closure phase measurements in the near-infrared made at the long baseline interferometer IOTA, the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606059
Autor:
Monnier, J. D., Berger, J. -P., Millan-Gabet, R., Traub, W., Schloerb, F. P., Pedretti, E., Benisty, M., Carleton, N. P., Haguenauer, P., Kern, P., Labeye, P., Lacasse, M. G., Malbet, F., Perraut, K., Pearlman, M., Zhao, M.
Publikováno v:
Astrophys.J.647:444-463,2006
Using the 3-telescope IOTA interferometer on Mt. Hopkins, we report results from the first near-infrared (lambda=1.65 mu) closure-phase survey of Young Stellar Objects (YSOs). These closure phases allow us to unambiguously detect departures from cent
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606052
Autor:
Perrin, G., Ridgway, S. T., Verhoelst, T., Schuller, P. A., Foresto, V. Coude du, Traub, W. A., Millan-Gabet, R., Lacasse, M. G.
Infrared interferometry of supergiant and Mira stars has recently been reinterpreted as revealing the presence of deep molecular layers. Empirical models for a photosphere surrounded by a simple molecular layer or envelope have led to a consistent in
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502415
Autor:
Verhoelst, T., Bordé, P. J., Perrin, G., Decin, L., Eriksson, K., Ridgway, S. T., Schuller, P. A., Traub, W. A., Millan-Gabet, R., Lacasse, M. G., Waelkens, C.
We present near-IR interferometric measurements of the K1.5 giant Arcturus (alpha Bootis), obtained at the IOTA interferometer with the FLUOR instrument, in four narrow filters with central wavelengths ranging from 2.03 to 2.39 micron. These observat
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501669