English

DEFPOS H${\alpha}$ Observations of W80 Complex

Astrophysics of Galaxies 2016-08-14 v1

Abstract

We present Hα{\alpha} emission line measurements of the W80 nebular complex. A total of 26 regions have been observed inside the nebula with the Dual Etalon Fabry-Perot Optical Spectrometer (DEFPOS) system at the f/48 Coude focus of 150 cm RTT150 telescope located at TUBITAK National Observatory (TUG) in Antalya/Turkey. The intensities, the local standard of rest (LSR) velocities (VLSRV_{LSR}), heliocentric radial velocities (VHELV_{HEL}) and the linewidths at Full Width at Half Maximum (FWHM) of the Hα{\alpha} emission lines have been determined from these observations. They lie in the range of 259 to 1159 Rayleigh {1R = 106/4π^{6}/4\pi photons cm2^{-2} sr1^{-1} s1^{-1} = 2.41107^{-7} erg cm2^{-2} sr1^{-1} s1^{-1} at Hα{\alpha}.} (R), 4 to 12 km s1^{-1} and 44 to 55 km s1^{-1}, respectively. The radial velocity measurements show that there are several maxima and minima inside the W80. The new results confirm the literature that complex seems to be rather a uniform in radial velocity and no seen turbulent motion inside the complex. The average value of the calculated the Emission Measure (EM) for the regions is 3.1 pc cm6^{-6}.

Keywords

Cite

@article{arxiv.1212.3165,
  title  = {DEFPOS H${\alpha}$ Observations of W80 Complex},
  author = {Nazım Aksaker},
  journal= {arXiv preprint arXiv:1212.3165},
  year   = {2016}
}

Comments

12 pages, 3 tables, 4 figures, Accepted for publication in Research in Astronomy and Astrophysics

R2 v1 2026-06-21T22:53:57.230Z