Far-ultraviolet investigation into the galactic globular cluster M30 (NGC 7099) - II. Potential X-ray counterparts and variable sources: Potential X-ray counterparts and variable sources
Far-ultraviolet investigation into the galactic globular cluster M30 (NGC 7099) - II. Potential X-ray counterparts and variable sources: Potential X-ray counterparts and variable sources
We present a far-ultraviolet (FUV) study of the globular cluster M30 (NGC 7099). The images were obtained using the Advanced Camera for Surveys (ACS/SBC, F150LP, FUV) and the Wide Field Planetary Camera 2 (WFPC2; F300W, UV) on board the Hubble Space Telescope (HST). We compare the catalogue of FUV objects to 10 known X-ray sources and find six confident matches of two cataclysmic variables (CVs), one RS CVn, one red giant with strong FUV emission, and two sources only detected in the FUV. We also searched for variable sources in our data set and found a total of seven blue stragglers (BSs), four horizontal branch (HB) stars, five red giant branch stars, 28 main-sequence stars, and four gap objects that demonstrated variability. One BS star is a known W-UMa contact binary, one of the gap objects is a known CV identified in this work to be a dwarf nova, and the three other gap sources are weak variables. The periods and positions of two of the variable HB stars match them to two previously known RR Lyrae variables of types RRab and RRc.
globular clusters: individual: M30 (NGC 7099), novae, cataclysmic variables, stars: horizontal branch, stars: variable: general, techniques: photometric, ultraviolet: stars
3022-3034
Mansfield, Santana
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Dieball, Andrea
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Kroupa, Pavel
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Knigge, Christian
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Zurek, David R.
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Shara, Michael
bac39df6-4548-4335-a751-9be1122e8c33
Long, Knox S.
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1 June 2022
Mansfield, Santana
c98ddd4d-5643-4db5-899d-063a29f440c2
Dieball, Andrea
5f595453-aa6b-4067-a3e1-026867fb9f7a
Kroupa, Pavel
1364c304-895c-46be-86dd-fa8c71148963
Knigge, Christian
ac320eec-631a-426e-b2db-717c8bf7857e
Zurek, David R.
0de59032-c43c-4c8f-89a2-b451488b86db
Shara, Michael
bac39df6-4548-4335-a751-9be1122e8c33
Long, Knox S.
2195d0ac-518d-4738-8e89-3e8e7a035a6c
Mansfield, Santana, Dieball, Andrea, Kroupa, Pavel, Knigge, Christian, Zurek, David R., Shara, Michael and Long, Knox S.
(2022)
Far-ultraviolet investigation into the galactic globular cluster M30 (NGC 7099) - II. Potential X-ray counterparts and variable sources: Potential X-ray counterparts and variable sources.
Monthly Notices of the Royal Astronomical Society, 513 (2), .
(doi:10.1093/mnras/stac1039).
Abstract
We present a far-ultraviolet (FUV) study of the globular cluster M30 (NGC 7099). The images were obtained using the Advanced Camera for Surveys (ACS/SBC, F150LP, FUV) and the Wide Field Planetary Camera 2 (WFPC2; F300W, UV) on board the Hubble Space Telescope (HST). We compare the catalogue of FUV objects to 10 known X-ray sources and find six confident matches of two cataclysmic variables (CVs), one RS CVn, one red giant with strong FUV emission, and two sources only detected in the FUV. We also searched for variable sources in our data set and found a total of seven blue stragglers (BSs), four horizontal branch (HB) stars, five red giant branch stars, 28 main-sequence stars, and four gap objects that demonstrated variability. One BS star is a known W-UMa contact binary, one of the gap objects is a known CV identified in this work to be a dwarf nova, and the three other gap sources are weak variables. The periods and positions of two of the variable HB stars match them to two previously known RR Lyrae variables of types RRab and RRc.
Text
2204.09681v1
- Accepted Manuscript
More information
Accepted/In Press date: 10 April 2022
Published date: 1 June 2022
Additional Information:
Publisher Copyright:
© 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
Keywords:
globular clusters: individual: M30 (NGC 7099), novae, cataclysmic variables, stars: horizontal branch, stars: variable: general, techniques: photometric, ultraviolet: stars
Identifiers
Local EPrints ID: 457980
URI: http://eprints.soton.ac.uk/id/eprint/457980
ISSN: 1365-2966
PURE UUID: cc7e5dc8-7ed2-4907-a1af-fd448db18bb5
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Date deposited: 23 Jun 2022 18:08
Last modified: 16 Mar 2024 17:48
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Contributors
Author:
Santana Mansfield
Author:
Andrea Dieball
Author:
Pavel Kroupa
Author:
David R. Zurek
Author:
Michael Shara
Author:
Knox S. Long
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