Zobrazeno 1 - 10
of 456
pro vyhledávání: '"Papamastorakis, J."'
We use the COBE/DIRBE (1.2, 2.2, 60, 100, 140, and 240 $\mu$m) maps and the COBE/FIRAS spectra (for the wavelength range 100 - 1000 $\mu$m) to constrain a model for the spatial distribution of the dust, the stars, and the gas in the Milky Way. By ass
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607638
Autor:
Boumis, P., Akras, S., van Hoof, P. A. M., Van de Steene, G. C., Papamastorakis, J., Lopez, J. A.
New Planetary Nebulae (PNe) were discovered through an [O III] 5007 A emission line survey in the Galactic bulge region with l>0 deg. We detected 240 objects, including 44 new PNe. Deep Halpha+[N II] CCD images as well as low resolution spectra were
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605083
Autor:
Boumis, P., Akras, S., Xilouris, E. M., Mavromatakis, F., Kapakos, E., Papamastorakis, J., Goudis, C. D.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 367 (2006) 1551-1561
The presentation of new results from an [O III] 5007 A survey in a search for planetary nebulae (PNe) in the galactic bulge is continued. A total of 60 objects, including 19 new PNe, have been detected in the remaining 34 per cent of the survey area,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601178
Autor:
Xilouris, E. M., Papadakis, I. E., Boumis, P., Dapergolas, A., Alikakos, J., Papamastorakis, J., Smith, N., Goudis, C. D.
We have observed S5 2007+777 and 3C371 in the B and I bands for 13 and 8 nights, respectively, during various observing runs in 2001, 2002 and 2004. The observations resulted in almost evenly sampled light curves, 6-9 hours long. We do not detect any
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511130
The extended supernova remnant G 116.5+1.1 was observed in the optical emission lines of Halpha+[N II], [S II] and [O III]; deep long-slit spectra were also obtained. The morphology of the remnant's observed emission is mainly diffuse and patchy in c
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502066
Publikováno v:
Astron.Astrophys. 426 (2004) 437-443
We have observed S4 0954+658 in the BVRI bands in 2001, and in the BI bands in 2002. The observations resulted in almost evenly sampled light curves, 3-8 hours long, with an average sampling interval of ~5-15 min. Because of the dense sampling and th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0407163
Publikováno v:
Astron.Astrophys. 417 (2004) 39-50
We address the problem of modeling the far-infrared (FIR) spectrum and deriving the star-formation rate (SFR) and the dust mass of spiral galaxies. We use the realistic physical model of Popescu et al. (2000) to describe the overall ultra-violet (UV)
Externí odkaz:
http://arxiv.org/abs/astro-ph/0312258
Publikováno v:
Astron.Astrophys. 415 (2004) 1051-1063
We present the first CCD flux-calibrated images of the snr G 82.2+5.3 in major optical emission lines. The [O III] 5007 line provides the first direct evidence of optical emission originating from G 82.2+5.3. Filamentary emission is detected in the w
Externí odkaz:
http://arxiv.org/abs/astro-ph/0311530
Publikováno v:
Astron.Astrophys. 397 (2003) 565-574
We have observed BL Lacertae in the B, R and I bands for 2 nights in July, 1999, and 3 nights in July, 2001. The observations resulted in almost evenly sampled light curves, with an average sampling interval of ~5 min. The source is significantly var
Externí odkaz:
http://arxiv.org/abs/astro-ph/0211083
We present preliminary results from a study of the seeing at Skinakas Observatory in Crete, Greece. The measurements have been made during the years 2000 and 2001 using a two-aperture Differential Image Motion Monitor (DIMM). The results of both camp
Externí odkaz:
http://arxiv.org/abs/astro-ph/0111022