Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Simon Théodore"'
Autor:
Brittain, Sean, Rettig, Terrence, Simon, Theodore, Balsara, Dinshaw, Tilley, David, Gibb, Erika, Hinkle, Kenneth
We present new observations of the fundamental ro-vibrational CO spectrum of V1647 Ori, the young star whose recent outburst illuminated McNeil's Nebula. Previous spectra, acquired during outburst in 2004 February and July, had shown the CO emission
Externí odkaz:
http://arxiv.org/abs/0710.0566
Publikováno v:
Astrophys.J.659:685-704,2007
The characterization of gas in the inner disks around young stars is of particular interest because of its connection to planet formation. In order to study the gas in inner disks, we have obtained high-resolution K-band and M-band spectroscopy of 14
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612201
Autor:
Rettig, T., Brittain, S., Simon, Theodore, Gibb, E., Balsara, D. S., Tilley, D. A., Kulesa, C.
Publikováno v:
Astrophys.J. 646 (2006) 342-350
We present high-resolution infrared spectra of four YSOs (T Tau N, T Tau S, RNO 91, and HL Tau). The spectra exhibit narrow absorption lines of 12CO, 13CO, and C18O as well as broad emission lines of gas phase12CO. The narrow absorption lines of CO a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603035
Autor:
Massey, Philip, Puls, Joachim, Pauldrach, A. W. A., Bresolin, Fabio, Kudritzki, Rolf P., Simon, Theodore
Publikováno v:
Astrophys.J. 627 (2005) 477-519
We analyze the optical and UV spectra of an additional sample of 20 Magellanic Cloud O stars, and draw conclusions from the complete sample of 40 stars. We find (1) The SMC O3-7 dwarfs are about 4000 K cooler than their Galactic counterparts; this is
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503464
Publikováno v:
Astrophys.J. 610 (2004) L45-L48
We present post-outburst observations of the mid-infrared spectrum and submillimeter continuum of the illuminating source of the newly-discovered McNeil's Nebula in the L1630 region of Orion. The 12 micron flux of this source has increased by a facto
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406089
Autor:
Martin, Eduardo L., Brandner, Wolfgang, Jewitt, David, Simon, Theodore, Wainscoat, Richard, Marley, Mark, Gelino, Christopher
One of the main scientific drivers of the Space InfraRed Telescope Facility (SIRTF) is the search for brown dwarfs and extrasolar superplanets. We discuss observational strategies for identification of these objects, and conclude that an optimal stra
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010315
We report on a near-infrared adaptive optics survey of a sample of 66 low-mass members of the pre-main sequence stellar cluster IC 348. We find 12 binary systems in the separation range 0.1-8.0 arcsec. An estimate of the number of faint undetected co
Externí odkaz:
http://arxiv.org/abs/astro-ph/9901034
Autor:
Simon, Theodore, Landsman, Wayne B.
We report the detection of N V 1239 A transition region emission in HST/GHRS spectra of the A7 V stars, Alpha Aql and Alpha Cep. Our observations provide the first direct evidence of 1-3 x 10^5 K material in the atmospheres of normal A-type stars. Fo
Externí odkaz:
http://arxiv.org/abs/astro-ph/9701132
Publikováno v:
To be published in PASP (March 1996)
We have obtained low-dispersion IUE spectra of the stars 56 Persei (F4 V) and HR 3643 (F7 II), as part of a survey of late-type stars with a 1565 A flux excess in the TD-1 ultraviolet sky survey. The IUE spectrum of each star reveals the presence of
Externí odkaz:
http://arxiv.org/abs/astro-ph/9512117
71 Tau was discovered to be a $\delta$ Scuti star by Horan (1979, AJ 84, 1770). To our knowledge no other photometry of this star has been published. 71 Tau is the second brightest X-ray source in the Hyades and has been shown to be variable by as mu
Externí odkaz:
http://arxiv.org/abs/astro-ph/9511094