A study of the metal-rich, thick disk globular cluster NGC5927, A stellar inventory
Simmerer, Jennifer LU ; Feltzing, Sofia LU
and Primas, F.
(2013)
In Astronomy & Astrophysics
556.
- Abstract
- We present a list of 72 radial velocity member stars in the metal-rich globular cluster NGC5927. The radial velocities are based on multiepoch, multifibre spectra. We identify 46 RGB/HB stars and 26 turn-off stars that are radial velocity members in the cluster. This cluster is situated quite close to the disk and hence fore-and/or background contamination, especially in the outskirts of the cluster, can be quite severe. Fortunately, the cluster has a radial velocity (we determine it to v(r) = -104.03 +/- 5.03 km s(-1)) that sets it clearly apart from the bulk velocities of the surrounding, background, and foreground stellar populations. Hence, our identification of members is clean and we can quantify a 50% contamination when stars in the... (More)
- We present a list of 72 radial velocity member stars in the metal-rich globular cluster NGC5927. The radial velocities are based on multiepoch, multifibre spectra. We identify 46 RGB/HB stars and 26 turn-off stars that are radial velocity members in the cluster. This cluster is situated quite close to the disk and hence fore-and/or background contamination, especially in the outskirts of the cluster, can be quite severe. Fortunately, the cluster has a radial velocity (we determine it to v(r) = -104.03 +/- 5.03 km s(-1)) that sets it clearly apart from the bulk velocities of the surrounding, background, and foreground stellar populations. Hence, our identification of members is clean and we can quantify a 50% contamination when stars in the outer part of the cluster are selected solely based on position in the color-magnitude diagram as opposed to selections based on radial velocities. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4106689
- author
- Simmerer, Jennifer
LU
; Feltzing, Sofia
LU
and Primas, F.
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- globular clusters: individual: NGC 5927
- in
- Astronomy & Astrophysics
- volume
- 556
- article number
- A58
- publisher
- EDP Sciences
- external identifiers
-
- wos:000323893500058
- scopus:84880876518
- ISSN
- 0004-6361
- DOI
- 10.1051/0004-6361/201220723
- language
- English
- LU publication?
- yes
- id
- ecbdbd48-8a41-4323-b8be-ff7036149bdf (old id 4106689)
- date added to LUP
- 2016-04-01 14:50:42
- date last changed
- 2024-01-10 09:23:22
@article{ecbdbd48-8a41-4323-b8be-ff7036149bdf,
abstract = {{We present a list of 72 radial velocity member stars in the metal-rich globular cluster NGC5927. The radial velocities are based on multiepoch, multifibre spectra. We identify 46 RGB/HB stars and 26 turn-off stars that are radial velocity members in the cluster. This cluster is situated quite close to the disk and hence fore-and/or background contamination, especially in the outskirts of the cluster, can be quite severe. Fortunately, the cluster has a radial velocity (we determine it to v(r) = -104.03 +/- 5.03 km s(-1)) that sets it clearly apart from the bulk velocities of the surrounding, background, and foreground stellar populations. Hence, our identification of members is clean and we can quantify a 50% contamination when stars in the outer part of the cluster are selected solely based on position in the color-magnitude diagram as opposed to selections based on radial velocities.}},
author = {{Simmerer, Jennifer and Feltzing, Sofia and Primas, F.}},
issn = {{0004-6361}},
keywords = {{globular clusters: individual: NGC 5927}},
language = {{eng}},
publisher = {{EDP Sciences}},
series = {{Astronomy & Astrophysics}},
title = {{A study of the metal-rich, thick disk globular cluster NGC5927, A stellar inventory}},
url = {{http://dx.doi.org/10.1051/0004-6361/201220723}},
doi = {{10.1051/0004-6361/201220723}},
volume = {{556}},
year = {{2013}},
}