Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007uasb.conf...83c&link_type=abstract
UV Astronomy: Stars from Birth to Death. Proceedings of the Joint Discussion n.4 during the IAU general Assembly of 2006. Ana I.
Astronomy and Astrophysics
Astronomy
Uv Astronomy, Wolf-Rayet Stars, Interstellar Lines, Distances To Stars
Scientific paper
Distances to Wolf-Rayet stars are still the subject of research. The onlyWR star with reliable Hipparcos parallax is WR 11. Other Wolf-Rayet stars have photometric distances estimations. Recently a correlation between equivalent width of interstellar Ca II H (3968 °A) and K (3933 °A) lines and Hipparcos parallaxes has been found for OB stars (Megier et al. 2005). These relations are given with formulas: π = 1/[2.78EW(K) 95] and π = 1/[4.58EW(H) 102], where π is a parallax in arcseconds and EW is equivalent width in milliangstroms. We have used these correlations to estimate distance to Wolf-Rayet star WR 134. Equivalent widths of Ca II lines have been measured in low resolution spectra with R=2000. We have got: 1.17 kpc from Ca II H and 1.18 kpc Ca II K line, while distance to this star as cited of VII Catalogue of Wolf-Rayet Stars is 1.74 kpc. WR 134 is also as a possible member of association Cyg OB3. According to new obtained distance it is more likely a member of Cyg OB1.
Czart Krzysztof
Strobel Andrzej
No associations
LandOfFree
Distance to the Wolf-Rayet Star WR 134 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 Distance to the Wolf-Rayet Star WR 134, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distance to the Wolf-Rayet Star WR 134 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1778045