J/MNRAS/385/361 BVRcIc photometry of NGC 821 globular clusters (Spitler+, 2008)
The connection between globular cluster systems and their host galaxy and
environment: a case study of the isolated elliptical NGC 821.
Spitler L.R., Forbes D.A., Strader J., Brodie J.P., Gallagher III J.S.
<Mon. Not. R. Astron. Soc., 385, 361-380 (2008)>
=2008MNRAS.385..361S 2008MNRAS.385..361S
ADC_Keywords: Galaxies, nearby ; Clusters, globular ; Photometry, UBVRI
Keywords: globular clusters: individual: NGC 821 -
galaxies: elliptical and lenticular, cD - galaxies: evolution -
galaxies: formation - galaxies: star clusters - early Universe
Description:
We performed a photometric study of globular clusters around the
isolated elliptical galaxy NGC 821. B, V and R-band photometry come
from the Mini-Mosaic imager on the 3.5-m Wisconsin Indiana Yale NOAO
(WIYN) telescope. Observations were conducted between
November 30 - December 2, 2005. Average seeing conditions were ∼0.7".
Two Hubble Space Telescope (HST) Wide-Field Planetary Camera 2 (WFPC2)
fields were analysed in the V and I-bands. Objects in this catalogue
are the globular cluster candidates according to the selection
criteria detailed in the journal article.
Astrometric solution is from USNO-B stars. Note the center of NGC 821
on this system is located at 02:08:21.118 +10:59:42.21. Photometry has
been corrected for Galactic extinction and we used a distance modulus
of m-M=31.75 in our analysis.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 81 306 NGC 821 globular cluster photometry
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [SFS2008] [1/306] ID number
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 16 F6.3 s RAs Right ascension (J2000)
18 A1 --- DE- Declination sign (J2000)
19- 20 I2 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 29 F5.2 arcsec DEs Declination (J2000)
31- 36 F6.3 mag Bmag ?=99.000 Johnson B magnitude
38- 42 F5.3 mag e_Bmag ?=9.000 B magnitude error
44- 49 F6.3 mag Vmag ?=99.000 Johnson V magnitude
51- 55 F5.3 mag e_Vmag ?=9.000 V magnitude error
57- 62 F6.3 mag Rcmag ?=99.000 Cousins R magnitude
64- 68 F5.3 mag e_Rcmag ?=9.000 R magnitude error
70- 75 F6.3 mag Icmag ?=99.000 Cousins I magnitude
77- 81 F5.3 mag e_Icmag ?=9.000 I magnitude error
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Acknowledgements:
Lee Spitler, lspitler(at)astro.swin.edu.au
(End) Lee Spitler [Swinburne University], Patricia Vannier [CDS] 26-Jun-2008