The kinematics and physical conditions of the ionized gas in Markarian 509. II. STIS echelle observations

S. B. Kraemer, D. M. Crenshaw, T. Yaqoob, B. McKernan, Jack Gabel, I. M. George, T. J. Turner, J. P. Dunn

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We present observations of the UV absorption lines in the luminous Seyfert 1 galaxy Mrk 509, obtained with the medium-resolution (λ/Δλ ≈ 40,000) echelle gratings of the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. The spectra reveal the presence of eight kinematic components of absorption in Lyα, C IV, and N V, at radial velocities of -422, -328, -259, -62, -22, -34, +124, and +210 km s-1 with respect to an emission-line redshift of z = 0.03440, seven of which were detected in an earlier Far Ultraviolet Spectrographic Explorer (FUSE) spectrum. The component at -22 km s-1 also shows absorption by Si IV. The covering factor and velocity width of the Si IV lines were lower than those of the higher ionization lines for this component, which is evidence for two separate absorbers at this velocity. We have calculated photoionization models to match the UV column densities in each of these components. Using the predicted O VI column densities, we were able to match the O VI profiles observed in the FUSE spectrum. Based on our results, none of the UV absorbers can produce the X-ray absorption seen in simultaneous Chandra observations; therefore, there must be more highly ionized gas in the radial velocity ranges covered by the UV kinematic components.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalAstrophysical Journal
Volume582
Issue number1 I
DOIs
StatePublished - Jan 1 2003
Externally publishedYes

Fingerprint

ionized gases
kinematics
gas
radial velocity
absorbers
echelle gratings
ionization
Hubble Space Telescope
spectrographs
photoionization
coverings
physical conditions
telescopes
galaxies
profiles
x rays

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Space and Planetary Science

Cite this

Kraemer, S. B., Crenshaw, D. M., Yaqoob, T., McKernan, B., Gabel, J., George, I. M., ... Dunn, J. P. (2003). The kinematics and physical conditions of the ionized gas in Markarian 509. II. STIS echelle observations. Astrophysical Journal, 582(1 I), 125-132. https://doi.org/10.1086/344542

The kinematics and physical conditions of the ionized gas in Markarian 509. II. STIS echelle observations. / Kraemer, S. B.; Crenshaw, D. M.; Yaqoob, T.; McKernan, B.; Gabel, Jack; George, I. M.; Turner, T. J.; Dunn, J. P.

In: Astrophysical Journal, Vol. 582, No. 1 I, 01.01.2003, p. 125-132.

Research output: Contribution to journalArticle

Kraemer, SB, Crenshaw, DM, Yaqoob, T, McKernan, B, Gabel, J, George, IM, Turner, TJ & Dunn, JP 2003, 'The kinematics and physical conditions of the ionized gas in Markarian 509. II. STIS echelle observations', Astrophysical Journal, vol. 582, no. 1 I, pp. 125-132. https://doi.org/10.1086/344542
Kraemer, S. B. ; Crenshaw, D. M. ; Yaqoob, T. ; McKernan, B. ; Gabel, Jack ; George, I. M. ; Turner, T. J. ; Dunn, J. P. / The kinematics and physical conditions of the ionized gas in Markarian 509. II. STIS echelle observations. In: Astrophysical Journal. 2003 ; Vol. 582, No. 1 I. pp. 125-132.
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