J/MNRAS/423/2260 VI photometry of M15 core (Diaz-Sanchez+, 2012)
High-resolution optical imaging of the core of the globular cluster M15 with
FastCam.
Diaz-Sanchez A., Perez-Garrido A., Villo I., Rebolo R., Perez-Prieto J.A.,
Oscoz A., Hildebrandt S.R., Lopez R., Rodriguez L.F.
<Mon. Not. R. Astron. Soc., 423, 2260-2269 (2012)>
=2012MNRAS.423.2260D 2012MNRAS.423.2260D
ADC_Keywords: Clusters, globular ; Photometry
Keywords: instrumentation: high angular resolution - techniques: photometric -
binaries: close - blue stragglers -
Hertzsprung-Russell and colour-magnitude diagrams -
globular clusters: individual: M15
Abstract:
We present high-resolution I-band imaging of the core of the globular
cluster M15 obtained at the 2.5-m Nordic Optical Telescope with
FastCam, a low readout noise L3CCD-based instrument. Short exposure
times (30ms) were used to record 200000 images (512x512 pixels each)
over a period of 2h and 43min. The lucky imaging technique was then
applied to generate a final image of the cluster centre with full
width at half-maximum ∼0.1arcsec and 13x13arcsec2 field of view. We
obtained a catalogue of objects in this region with a limiting
magnitude of I=19.5. I-band photometry and astrometry are reported
for 1181 stars. This is the deepest I-band observation of the M15 core
at this spatial resolution.
Description:
Observations were obtained on the night of 2008 July 25 with the
FastCam instrument on the 2.5-m Nordic Optical Telescope using the
I-band filter (820nm) which matches the Johnson-Bessell system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 36 1181 FastCam I-band catalogue of the M15 core
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See also:
J/ApJ/347/251 : Dynamics of globular cluster M15 (Peterson+ 1989)
J/A+AS/119/307 : Position in M15 (Le Campion+, 1996)
J/AJ/106/154 : HST Observations in inner region of M15 (Ferraro+ 1993)
J/AJ/107/1745 : HST UVI photometry of M15. II. (Yanny+, 1994)
J/AJ/107/2067 : Fabry-Perot measurements of M15 (Gebhardt+, 1994)
J/AJ/113/1026 : Fabry-Perot Observations of M15 (Gebhardt+ 1997)
J/AJ/115/708 : Radial Velocities in the Field of M15 (Drukier+ 1998)
J/AJ/119/1268 : CFHT adaptive optics observations of M15 (Gebhardt+, 2000)
J/AJ/119/2274 : JK Photometry of globular clusters M15 + M56 (Ivanov+, 2000)
J/AJ/124/3255 : UBV photometry in M15 (van der Marel+, 2002)
J/ApJ/595/187 : Proper motions in M15 (McNamara+, 2003)
J/ApJ/602/264 : Proper motions and radial velocities in M15 (Mcnamara+, 2004)
J/AJ/130/1177 : C and N abundances for M15 stars (Cohen+, 2005)
J/ApJ/670/379 : UV photometry of M15 (Dieball+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq Sequential number of the star
6- 11 F6.3 arcsec oRA Offset in right ascension from AC 211 (1)
13- 18 F6.3 arcsec oDE Offset in right ascension from AC 211 (1)
20- 24 F5.2 mag Imag I magnitude obtained with FastCam
26- 31 F6.3 mag Vmag ?=- V magnitude from the van der Marel et al.
(2002, Cat. J/AJ/124/3255) catalogue
33- 36 I4 --- VGG ?=- ID from the van der Marel et al.
(2002, Cat. J/AJ/124/3255) catalogue.,
Cl* NGC 7078 VGG NNNNN in Simbad
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Note (1): with respect to the M15 cluster star AC 211 located at (J2000):
21:29:58.31+12:10:02.85 (Kulkarni et al. 1990ApJ...363L...5K 1990ApJ...363L...5K)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Apr-2013