J/MNRAS/511/3785 Far-Ultraviolet catalogue of stars in M30 (Mansfield+, 2022)
Far-Ultraviolet catalogue of stars in M30 (NGC 7099).
I. Photometry and radial distributions.
Mansfield S., Dieball A., Kroupa P., Knigge C., Zurek D.R., Shara M.,
Long S.L.
<Mon. Not. R. Astron. Soc. 511, 3785-3794 (2022)>
=2022MNRAS.511.3785M 2022MNRAS.511.3785M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Stars, fundamental ; Photometry, ultraviolet
Keywords: techniques: image processing - techniques: photometric -
globular clusters: individual: M30 NGC 7099 - blue stragglers -
Hertzsprung-Russell and colour-magnitude diagrams - ultraviolet: stars
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) which were both on board the Hubble Space Telescope
(HST). The FUV-UV colour-magnitude diagram (CMD) shows a main sequence
(MS) turnoff at FUV∼22mag and FUV-UV∼3mag. The MS extends 4 mag
below the turnoff, and a prominent horizontal branch (HB) and blue
straggler (BS) sequence can be seen. A total of 1218 MS stars, 185 red
giant branch stars, 47 BS stars and 41 HB stars are identified, along
with 78 sources blueward of the MS which consist of white dwarfs (WDs)
and objects in the gap between the WDs and the MS that include
potential cataclysmic variable (CV) candidates. The radial
distribution of the BS population is concentrated towards the cluster
centre, indicating that mass segregation has occurred. The blue and
red sub-populations of the double BS sequence appear mixed in the
ultraviolet CMD, and no significant central concentration of CV
candidates is seen in this cluster.
Description:
FUV and UV catalogue of stars taken by the HST (GO-10561) of the
globular cluster M30 (NGC 7099). Included are all sources with FUV-UV
magnitude errors <0.2mag. Positional matches to objects from the
optical catalogue (Guhathakurta et al., 1998AJ....116.1757G 1998AJ....116.1757G, Cat.
J/AJ/116/1757) and Gaia DR2 (Gaia Collaboration, 2018A&A...616A...1G 2018A&A...616A...1G,
Cat. I/345) are included.
Sources 1636-1761 only contain FUV measurements.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
catalog.dat 149 1695 M30 FUV and UV catalogue
--------------------------------------------------------------------------------
See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/AJ/116/1757 : M30 UBV photometry (Guhathakurta+, 1998)
Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID Identification number (1)
6- 14 F9.5 deg RAdeg Right Ascension (J2000)
16- 24 F9.5 deg DEdeg Declination (J2000)
26- 30 F5.3 arcmin r Radial distance from centre of cluster (2)
32- 38 F7.2 pix X-FUV X Position in FUV image
40- 46 F7.2 pix Y-FUV Y Position in FUV image
48- 54 F7.2 pix X-UV ? X Position in UV image
56- 62 F7.2 pix Y-UV ? Y Position in UV image
64- 69 F6.3 mag FUV FUV magnitude
71- 75 F5.3 mag e_FUV FUV magnitude uncertainty
78- 83 F6.3 mag UV ? UV magnitude
86- 90 F5.3 mag e_UV ? UV magnitude uncertainty
92- 97 F6.3 mag FUV-UV ? FUV-UV colour index
100-104 F5.3 mag e_FUV-UV ? FUV-UV colour index uncertainty
106-112 A7 --- Type Type of star
113-117 F5.2 mag B-V ? B-V colour index (Guhathakurta et al.,
1998, Cat. J/AJ/116/1757)
120-124 F5.2 mag Vmag ? V magnitude (Guhathakurta et al.,
1998, Cat. J/AJ/116/1757)
126-129 I4 --- GWY ? Designation given in Guhathakurta et al.,
(1998, Cat. J/AJ/116/1757)
131-149 I19 --- GaiaDR2 ? Designation given in Gaia Collaboration
(2018, Cat. I/345)
--------------------------------------------------------------------------------
Note (1): Sources 1636-1761 only contain FUV measurements.
Note (2): Centre of cluster at 325.0922083, -23.1798333 as per Ferraro et al.
(2009Natur.462.1028F 2009Natur.462.1028F)
--------------------------------------------------------------------------------
Acknowledgements:
Santana Mansfield, smansfield(at)astro.uni-bonn.de
(End) Santana Mansfield [Univ. Bonn], Patricia Vannier [CDS] 07-Feb-2022