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B and I-band optical micro-variability observations of the BL Lac objects S5 2007+777 and 3C371
E. M. Xilouris, I. E. Papadakis, P. Boumis +5
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 al…
Infrared [Fe II] emission from P Cygni's nebula: Atomic data, mass, kinematics, and the 1600 A.D. outburst
Nathan Smith, Patrick Hartigan
We present moderate and high-dispersion 1-2.5 micron spectra of the 10 arcsec nebula around P Cygni, dominated by bright emission lines of [Fe II]. Observed [Fe II] line ratios dis…
The reverse shock of SNR1987A at 18 years after outburst
Nathan Smith, Svetozar A. Zhekov, Kevin Heng +3
We use low-dispersion spectra obtained at the Magellan Observatory to study the broad H-alpha emission from the reverse shock of the infant supernova remnant SNR1987A. These spectr…
The [O III] Veil: Astropause of Eta Carinae's Wind?
Nathan Smith, Jon A. Morse, John Bally
We present narrowband images of eta Carinae in the light of [O III] 5007 obtained with HST/WFPC2, as well as a ground-based image in the same emission line with a larger field of v…
Thermal Dust Emission from Proplyds, Unresolved Disks, and Shocks in the Orion Nebula
Nathan Smith, John Bally, Ralph Y. Shuping +2
We present a new 11.7 micron mosaic image of the Orion nebula obtained with T-ReCS on Gemini South. The map includes the BN/KL region, the Trapezium, and OMC-1 South. Excluding BN/…
Kinematic Structure of H2 and [Fe II] in the Bipolar Planetary Nebula M 2-9
Nathan Smith, Bruce Balick, Robert D. Gehrz
We present high-dispersion long-slit IR spectra of the double-shell bipolar planetary nebula M 2-9 in the emission lines [Fe II] 16435 and H2 v=1--0 S(1) 21218. H2 spectra reveal f…