The Ca+ abundance of HVC complex C

Bibcode
1996A&A...306L..25W
Douglas, N. G.; Peletier, R. F.; Schwartz, U. J.; van Woerden, H.; Wakker, B. P.
Bibliographical reference

Astronomy and Astrophysics, v.306, p.L25

Advertised on:
2
1996
Journal
Astronomy and Astrophysics
Number of authors
5
IAC number of authors
1
Citations
17
Refereed citations
13
Description
We report the first detection of Ca II H and K absorption in the high-velocity cloud complex C, the largest HVC. Absorption is detected in the spectra of the quasar PG 1351+640 and of the Seyfert galaxy Mark 290, at velocities of -163 and -137km/s (see fig.2). The implied Ca+ abundances are about 2x10^-8^, or about 0.01 times the total solar Calcium abundance. This values lies near the middle of the range of values found for other HVCs. The measured abundance will allow firm conclusions about the distance of complex C from the presence or absence of its absoprtion in stellar spectra.
Type
Refereed
Clouds

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