| Issue |
A&A
Volume 417, Number 2, April II 2004
|
|
|---|---|---|
| Page(s) | 597 - 604 | |
| Section | Galactic structure, stellar clusters, and populations | |
| DOI | https://doi.org/10.1051/0004-6361:20040003 | |
| Published online | 19 March 2004 | |
Rotation velocities of hot horizontal branch stars in the globular clusters NGC 1904, NGC 2808, NGC 6093, and NGC 7078: The database *,**
1
Dipartimento di Astronomia, Università di Padova, Vicolo dell'Osservatorio 2, 35122 Padova, Italy e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
, This email address is being protected from spambots. You need JavaScript enabled to view it.
2
Instituto de Astrofisica de Canarias, via Lactea s/n, 382002 La Laguna Tenerife, Spain e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
3
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei Mnchen, Germany e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Corresponding author: A. Recio-Blanco, This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
9
May
2003
Accepted:
19
December
2003
Abstract
We present radial and rotation (
) velocity measurements
from UVES+VLT high resolution spectra of 61 stars in the blue
horizontal branches (HB) of the Galactic globular clusters NGC 1904 (M 79),
NGC 2808, NGC 6093 (M 80) and NGC 7078 (M 15).
The data reduction and the velocity determination, based on
cross-correlation techniques, are discussed in detail. Most of this
database has been used by Recio-Blanco et al. ([CITE]) in their analysis
of the rotation velocity properties of blue HB stars. Here we present
additional data for NGC 2808. We confirm the results of the previous
paper, in particular, a possible link between the HB jump and the
abrupt change in the rotational velocity distribution around 
K.
Key words: galaxy: globular clusters: general / stars: horizontal-branch / stars: rotation
Based on observations with the ESO Very Large Telescope + UVES, at the Paranal Observatory, Chile.
Tables 2–5 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/417/597
© ESO, 2004
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