HST Expansion Parallax of Planetary Nebulae

Details HST Expansion Parallax of Planetary Nebulae HST Expansion Parallax of Planetary Nebulae

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...196.6101p&link_type=abstract

American Astronomical Society, 196th AAS Meeting, #61.01; Bulletin of the American Astronomical Society, Vol. 32, p.1283

Mathematics

Logic

2

Scientific paper

We present results of an HST expansion parallax project for several planetary nebulae. With the resolution of HST, it is possible to obtain reliable distances to nearby planetaries with time baselines of only five years. As part of a larger observing program, we have reobserved five planetaries (IC2448, NGC6578, NGC6884, NGC3242 and NGC6891) which had snapshot data in the archive. We used the two epochs of HST data to determine the angular expansion of four of these objects. We combined these data with high resolution echelle data taken at Kitt Peak and CTIO to find distances to these four nebulae which are accurate to 20 For one nebula (NGC6891), the angular expansion was too small to measure with any degree of certainty. Combined with the echelle data, we put a lower limit on the distance to this nebula. We also present our observations of the morphological changes in the nebulae over these relatively short time scales. This project is supported by NASA.

Affiliated with

Also associated with

No associations

Rating

HST Expansion Parallax of Planetary Nebulae 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 HST Expansion Parallax of Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HST Expansion Parallax of Planetary Nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1767575