Zobrazeno 1 - 10
of 119
pro vyhledávání: '"A. Tannirkulam"'
Autor:
Monnier, J. D., Zhao, Ming, Pedretti, E., Millan-Gabet, R., Berger, J. P., Traub, W., Schloerb, F. P., Brummelaar, T. ten, McAlister, H., Ridgway, S., Sturmann, L., Sturmann, J., Turner, N., Baron, F., Kraus, S., Tannirkulam, A., Williams, P. M.
Publikováno v:
The Astrophysical Journal Letters, Volume 742, Issue 1, article id. L1 (2011)
Wolf-Rayet stars represent one of the final stages of massive stellar evolution. Relatively little is known about this short-lived phase and we currently lack reliable mass, distance, and binarity determinations for a representative sample. Here we r
Externí odkaz:
http://arxiv.org/abs/1111.1266
Publikováno v:
Astrophys.J.700:491-505,2009
The mid-infrared properties of pre-planetary disks are sensitive to the temperature and flaring profiles of disks for the regions where planet formation is expected to occur. In order to constrain theories of planet formation, we have carried out a m
Externí odkaz:
http://arxiv.org/abs/0905.3495
Autor:
Thureau, N. D., Monnier, J. D., Traub, W. A., Millan-Gabet, R., Pedretti, E., Berger, J. -P., Garcia, M. R., Schloerb, F. P., Tannirkulam, A. -K.
We present the first high angular resolution observation of the B[e] star/X-ray transient object CI Cam, performed with the two-telescope Infrared Optical Telescope Array (IOTA), its upgraded three-telescope version (IOTA3T) and the Palomar Testbed I
Externí odkaz:
http://arxiv.org/abs/0905.0154
Autor:
Tannirkulam, A., Monnier, J. D., Harries, T. J., Millan-Gabet, R., Zhu, Z., Pedretti, E., Ireland, M., Tuthill, P., Brummelaar, T. ten, McAlister, H., Farrington, C., Goldfinger, P. J., Sturmann, J., Sturmann, L., Turner, N.
We present comprehensive models for the Herbig Ae stars MWC275 and AB Aur that aim to explain their spectral energy distribution (from UV to millimeter) and long baseline interferometry (from near-infrared to millimeter) simultaneously. Data from the
Externí odkaz:
http://arxiv.org/abs/0808.1728
Autor:
Monnier, J. D., Tannirkulam, A., Tuthill, P. G., Ireland, M., Cohen, R., Danchi, W. C., Baron, F.
We report the discovery of a circumbinary disk around the Herbig Ae/Be system v892 Tau. Our detailed mid-infrared images were made using segment-tilting interferometry on the Keck-1 Telescope and reveal an asymmetric disk inclined at ~60 degs with an
Externí odkaz:
http://arxiv.org/abs/0807.0146
Autor:
Zhu, Zhaohuan, Hartmann, Lee, Calvet, Nuria, Hernandez, Jesus, Tannirkulam, Ajay-Kumar, D'Alessio, Paola
The mid- to far-infrared emission of the outbursting FU Orionis objects has been attributed either to a flared outer disk or to an infalling envelope. We revisit this issue using detailed radiative transfer calculations to model the recent, high sign
Externí odkaz:
http://arxiv.org/abs/0806.3715
Autor:
Tannirkulam, A., Monnier, J. D., Millan-Gabet, R., Harries, T. J., Pedretti, E., Brummelaar, T. A. ten, McAlister, H., Turner, N., Sturmann, J., Sturmann, L.
Using the longest optical-interferometeric baselines currently available, we have detected strong near-infrared (NIR) emission from inside the dust-destruction radius of Herbig Ae stars MWC275 and AB Aur. Our sub-milli-arcsecond resolution observatio
Externí odkaz:
http://arxiv.org/abs/0803.1484
Autor:
Zhu, Zhaohuan, Hartmann, Lee, Calvet, Nuria, Hernandez, Jesus, Muzerolle, James, Tannirkulam, Ajay-Kumar
We have constructed a detailed radiative transfer disk model which reproduces the main features of the spectrum of the outbursting young stellar object FU Orionis from ~ 4000 angstrom, to ~ 8 micron. Using an estimated visual extinction Av~1.5, a ste
Externí odkaz:
http://arxiv.org/abs/0707.3429
Publikováno v:
Astrophys.J.661:374-384,2007
Dust-grain growth and settling are the first steps towards planet formation. An understanding of dust physics is therefore integral to a complete theory of the planet formation process. In this paper, we explore the possibility of using the dust evap
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702044
Autor:
Millan-Gabet, R., Monnier, J. D., Akeson, R. L., Hartmann, L., Berger, J. -P., Tannirkulam, A., Melnikov, S., Billmeier, R., Calvet, N., D'Alessio, P., Hillenbrand, L. A., Kuchner, M., Traub, W. A., Tuthill, P. G., Beichman, C., Boden, A., Booth, A., Colavita, M., Creech-Eakman, M., Gathright, J., Hrynevych, M., Koresko, C., Mignant, D. Le, Ligon, R., Mennesson, B., Neyman, C., Sargent, A., Shao, M., Swain, M., Thompson, R., Unwin, S., van Belle, G., Vasisht, G., Wizinowich, P.
Publikováno v:
Astrophys.J.641:547-555,2006
We present new K-band long baseline interferometer observations of three young stellar objects of the FU Orionis class, V1057 Cyg, V1515 Cyg and Z CMa-SE, obtained at the Keck Interferometer during its commissioning science period. The interferometer
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512230