Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pasp..115...67o&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 115, Issue 803, pp. 67-79.
Astronomy and Astrophysics
Astronomy
5
Ism: Evolution, Ism: Kinematics And Dynamics, Planetary Nebulae: Individual (H4-1)
Scientific paper
Up to now, 10 planetary nebulae have been regarded as halo planetary nebulae (halo PNe). We obtained low- and moderate-dispersion spectra of the spatially resolved halo planetary nebula H4-1 in the wavelength region of 3700-6800 Å with the Cassegrain Spectrograph of the 74 inch telescope. At moderate dispersions, we were able to observe [O III] λλ4959, 5007 and Hα of H4-1 at several position angles (P.A.). We assumed that the widths of these emission-line profiles were due to Doppler broadening and that these emission lines were composed of several Gaussian components. Multiple Gaussian deconvolution analysis of such emission lines indicated H4-1 has broad wing components (~600 km s-1) at P.A. 135° and 180°. We think H4-1 has a ``bipolar flow'' between P.A. 135° and 180°. From low-dispersion spectra, we confirm that H4-1 is a metal-poor PN. In spite of the lack of spatially resolved images at present, we believe that H4-1 has a bipolar flow and that its axis is almost parallel to the line of sight, with a small inclination angle.
Otsuka Masaaki
Tajitsu Akito
Tamura Shin'ichi
Yadoumaru Yasushi
No associations
LandOfFree
Analysis of Internal Motions in the Halo Planetary Nebula H4-1 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Analysis of Internal Motions in the Halo Planetary Nebula H4-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of Internal Motions in the Halo Planetary Nebula H4-1 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1321217