FUSE Observations of Interstellar Gas Towards the LMC Star Sk -67 05

Details FUSE Observations of Interstellar Gas Towards the LMC Star Sk -67 05 FUSE Observations of Interstellar Gas Towards the LMC Star Sk -67 05

2000-05-23

arxiv.org/abs/astro-ph/0005459v1

Ap J Letters, 538, L39.

Astronomy and Astrophysics

Astrophysics

8 pages, including 2 tables and 4 figures. To appear in FUSE special issue of Ap.J. Letters

Scientific paper

10.1086/312800

We report on measurements of interstellar O VI, H2, P II, Si II, Ar I, and Fe II absorption along the line of sight to Sk -67 05, a B0 Ia star in a diffuse H II region in the western edge of the Large Magellanic Cloud (LMC). We find log N(O VI) = 14.40 +/- 0.04 in the Milky Way (MW) component and, using the C IV column density from previous IUE observations, N(C IV) / N(O VI) = 1.00 +/- 0.16, a value similar to other halo measurements made with FUSE. In the LMC component, log N(O VI) = 13.89 +/- 0.05, and N(C IV) / N(O VI) < 0.4 (3 sigma), since only an upper limit on N(C IV) is available. Along this sightline the LMC is rich in molecular hydrogen, log N(H2) = 19.50 +/- 0.08; in the MW log N(H2) = 14.95 +/- 0.08. A two-component fit for the excitation temperature of the molecular gas in the LMC gives T_01 = 59 +/- 5 K for J=0,1 and T_ex = 800 +/- 330 K for J=3,4,5. For the MW, T_01 = 99 (+30/-20) K; no excitation temperature could be determined for the higher rotational states. The MW and LMC gas-phase [Fe/P] abundances are ~0.6 and ~0.7 dex lower, respectively, than solar system abundances. These values are similar to [Fe/Zn] measurements for the MW and LMC towards SN 1987A.

Affiliated with

Also associated with

No associations

Rating

FUSE Observations of Interstellar Gas Towards the LMC Star Sk -67 05 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 FUSE Observations of Interstellar Gas Towards the LMC Star Sk -67 05, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FUSE Observations of Interstellar Gas Towards the LMC Star Sk -67 05 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-473059