1996A&A...314..609R

Query : 1996A&A...314..609R

1996A&A...314..609R - Astronomy and Astrophysics, volume 314609-614 (1996/10-2)

UHRF observations of the interstellar medium towards two stars in the Galactic Halo.

RYANS R.S.I., SEMBACH K.R. and KEENAN F.P.

Abstract (from CDS):

We present interstellar Na I and Ca II spectra of the halo stars HD 18100 and HD 203664, obtained with the Ultra-High Resolution Facility on the Anglo-Australian Telescope. These observations have spectral resolutions R≃210,000 and signal-to-noise ratios in the range 20-75. We find multiple absorbing components along both sightlines and resolve the velocity structure within the high velocity cloud toward HD 203664. We discuss these spectra and their use in future Hubble Space Telescope studies of HD 18100 and HD 203664.

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Journal keyword(s): ISM: kinematics and dynamics - stars: individual: HD 18100, HD 203664 - ISM: atoms - Galaxy: halo

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 18100 bC? 02 53 40.8050199600 -26 09 20.428125408   8.23 8.44     B5II/III 104 0
2 * iot Ori SB* 05 35 25.9861932063 -05 54 35.598684624 1.45 2.53 2.77     O9IIIvar 793 0
3 V* SY Equ bC* 21 23 28.8086293896 +09 55 54.920417808 7.37 8.33 8.53     B0.5IIIn 92 0
4 * alf Gru PM* 22 08 13.98473 -46 57 39.5078 1.11 1.58 1.71 1.75 1.83 B6V 311 0

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