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Erratum: ``The Excitation and Metallicity of Galactic H II Regions from ISO-SWS Observations of Mid-Infrared Fine-Structure Lines'' (ApJ, 566, 880 [2002])
Pauldrach, A. W. A.; Feuchtgruber, Helmut; Lutz, Dieter +2 more
Because of an error at the Press, several figures were published with incorrect or missing axis labels. Figures 2, 3, 4, and 9 are correctly reproduced below. The Press sincerely regrets the error.
The LBV Phase of the Planetary Nebula LMC-N66
Peña, M.
Recent observations of the [WN] central star of the planetary nebula LMC-N66, combined with previous data show that the star has been slowly fading, after its violent LBV-type outburst occurred in 1994. The present stellar brightness ( m[V] ~ 18.1 mag) and the probable mass loss rate are similar to the values observed in 1990. Nebular data from lo…
The dynamical nature of the coronal streamer belt
Wang, Y. -M.
SOHO/LASCO observations of the white-light corona have revealed a number of remarkable small-scale phenomena, including plasma blobs that are ejected continually from the cusps of streamers, fine raylike structures that pervade the streamer belt, and ubiquitous inflows during times of high solar activity. We discuss the implications of these obser…
Transition region quiet sun velocity field evolution
Vial, J. -C.; Wilhelm, K.; Curdt, W. +3 more
The UV/EUV SUMER spectrometer aboard SOHO can record profiles of lines emitted by elements at different stages of ionization corresponding to several temperatures within the transition region temperature range. During the solar cycle minimum in July 1996, we were able to observe the quiet Sun during five consecutive days. From the line positions w…
The NICMOS observational program: some personal examples
Thompson, Rodger I.
This paper reviews a few of the author's observational programs with the Near Infrared Camera and Multi-Object Spectrometer on the Hubble Space Telescope. These programs are taken as being partially representative of the very large body of observations carried out by NICMOS in both General Observer and Guaranteed Time Observer scientific programs.
IUE-newsips spectra of sigma Geminorum
Ekmekçi, F.; Karakuş, O.
The IUE spectra of sigma Gem have been taken from the NASA IUE archive using IDL (Interactive Data Language). The spectra have been observed in 1979-1986 period. All the spectra analysed in the present study have NEWSIPS reductions and consist of 25 LWP, 8 LWR and 5 SWP images in high resolution, and 2 LWP and 14 SWP images in low dispersion. The …
An Ionized Microjet from the Orion Nebula Proplyd LV 2
Henney, W. J.; Meaburn, J.; Garrington, S. T.
We present results of multi-wavelength observations of the Orion nebula proplyd LV 2 (M42 167-317), concentrating on our analysis of the microjet that emerges from the proplyd's ionization front. The microjet is one-sided at its base but faint, symmetrical jet filaments are seen on both sides at arcsecond scales. The physical characteristics of th…
Energetic ions in the high latitude magnetosphere during the leading phase of a CME
Zong, Q. -G.; Daly, P.; Fritz, T. A. +2 more
On April 21, 2001 a CME started to interact with the magnetosphere when CLUSTER II Satellites were travelling in the higher latitudes region. We examine the energetic ions and their behaviours in the high latitude region of the magnetosphere during the leading phase of the CME which caused a strong magnetic storm (Dst=‑103 nT…
CCD observations for the Hipparcos star 104297 measured with respect to the Galilean satellite Callisto
Peng, Q. Y.; Li, Z. L.
CCD images for two Galilean satellites: Europa, Callisto and a bright star in Hipparcos Catalogue (No.104297) are obtained on 1 meter telescope at the Yunnan Observatory on the night of Nov.14, 1997. After the two satellites were measured for the scale and orientation of CCD frames, the apparent positions for the star were determined with respect …
HST NICMOS and WFPC2 observations of molecular hydrogen and dust in the central galaxies in cluster cooling flows
Mack, Jennifer; Donahue, Megan
We present preliminary results of HST imaging observations of three central galaxies in X-ray luminous clusters of galaxies with putative major cooling flows in their cores: NGC 1275 in the Perseus cluster, Abell 2597, and PKS 0745-19. Narrow-band NICMOS imaging at 2 microns reveals extended, warm ( T∼2000-3000 K) molecular hydrogen structures in …