Zobrazeno 1 - 10
of 279
pro vyhledávání: '"Harris, G. J."'
Autor:
Harris, G. J., Larner, F. C., Tennyson, J., Kaminsky, B. M., Pavlenko, Ya. V., Jones, H. R. A.
A line list of vibration-rotation transitions for 13C substituted HCN is presented. The line list is constructed using known experimental levels where available, calculated levels and ab initio line intensities originally calculated for the major iso
Externí odkaz:
http://arxiv.org/abs/0807.0717
Autor:
Pavlenko, Ya. V., Harris, G. J., Tennyson, J., Jones, H. R. A., Brown, J. M., Hill, C., Yakovina, L. A.
We compute opacities for the electronic molecular band systems A 6Sigma+ -- X 6Sigma+ of CrH and CrD, and A 2Pi -- X 2Sigma+ of MgH and MgD. The opacities are computed by making use of existing spectroscopic constants for MgH and CrH. These constants
Externí odkaz:
http://arxiv.org/abs/0710.0368
Autor:
Matsuura, M., Zijlstra, A. A., Bernard-Salas, J., Menzies, J. W., Sloan, G. C., Whitelock, P. A., Wood, P. R., Cioni, M. -R. L., Feast, M. W., Lagadec, E., van Loon, J. Th., Groenewegen, M. A. T., Harris, G. J.
Publikováno v:
Mon.Not.Roy.Astron.Soc.382:1889-1900,2007
We have observed five carbon-rich AGB stars in the Fornax dwarf spheroidal (dSph) galaxy, using the Infrared Spectrometer on board the Spitzer Space Telescope. The stars were selected from a near-infrared survey of Fornax and include the three reddes
Externí odkaz:
http://arxiv.org/abs/0709.3199
Autor:
Lagadec, Eric, Zijlstra, Albert A., Sloan, G. C., Matsuura, Mikako, Wood, Peter, Harris, G. J., van Loon, Jacco Th., Blommaert, J. A. D. L., Hony, S., Groenewegen, M. A. T., Feast, M. W., Whitelock, P. A., Menzies, J. W., Cioni, M. -R., Waters, L. B. F. M.
Publikováno v:
Mon.Not.Roy.Astron.Soc.376:1270-1284,2007
We present Spitzer Space telescope spectroscopic observations of 14 carbon-rich AGB stars in the Small Magellanic Cloud. SiC dust is seen in most of the carbon-rich stars but it is weak compared to LMC stars. The SiC feature is strong only for stars
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611071
Publikováno v:
Mon.Not.Roy.Astron.Soc.374:337-343,2007
The primordial elements, H, He and Li are included in a low temperature equation of state and monochromatic opacity function. The equation of state and opacity function are incorporated into the stellar evolution code NG-ELMS, which makes use of a no
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610165
Publikováno v:
Mon.Not.Roy.Astron.Soc.368:1087-1094,2006
A computed list of H$_{2}$$^{16}$O infra-red transition frequencies and intensities is presented. The list, BT2, was produced using a discrete variable representation two-step approach for solving the rotation-vibration nuclear motions. It is the mos
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601236
Publikováno v:
Mon.Not.Roy.Astron.Soc.367:400-406,2006
We build an accurate database of 5200 HCN and HNC rotation-vibration energy levels, determined from existing laboratory data. 20~000 energy levels in the Harris et al. (2002) linelist are assigned approximate quantum numbers. These assignments, lab d
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512363
Publikováno v:
Astrophys.J. 617 (2004) L143-L146
HeH$^+$ is found to be the dominant positive ion over a wide range of temperatures and densities relevant to helium rich white dwarfs. The inclusion of HeH$^+$ in ionization equilibrium computations increases the abundance of free electrons by a sign
Externí odkaz:
http://arxiv.org/abs/astro-ph/0411331
Publikováno v:
Astrophys.J.600:1025-1034,2004
H3+ has been shown (Lenzuni et al. 1991, ApJS, 76, 759) to be the dominant positive ion, in a zero metallicity gas at low temperature and intermediate to high density. It therefore affects both the number of free electrons and the opacity of the gas.
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309487
Publikováno v:
Mon.Not.Roy.Astron.Soc. 344 (2003) 1107
Model carbon star atmospheres and synthetic spectra have been calculated using the recent HCN/HNC vibration rotation linelist of Harris et al. (2002) ApJ, 578, 657. The calculations are repeated using only HCN lines and show that HNC has a significan
Externí odkaz:
http://arxiv.org/abs/astro-ph/0306141