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J/A+A/456/985    Radial velocities of 76 M31 candidate clusters (Galleti+, 2006)

An updated survey of globular clusters in M 31. I. Classification and radial velocity for 76 candidate clusters. Galleti S., Federici L., Bellazzini M., Buzzoni A., Fusi Pecci F. <Astron. Astrophys. 456, 985 (2006)> =2006A&A...456..985G
ADC_Keywords: Clusters, globular ; Photometry ; Radial velocities Keywords: galaxies: individual: M31 - galaxies: star clusters - galaxies: Local Group Abstract: We present the first results of a large spectroscopic survey of globular clusters and candidate globular clusters in the nearby M31 galaxy. The survey is aimed at the classification of known candidate M31 clusters and at the study of their kinematic properties. We obtained low-resolution spectroscopy for 133 targets, including 76 yet-to-be-confirmed candidate clusters (i.e. with no previous spectroscopic information), 55 already-confirmed genuine M31 clusters, and 2 uncertain candidates. Our observations allowed a reliable estimate of the target radial velocity, within a typical accuracy of ~±20Km/s. The observed candidates have been robustly classified according to their radial velocity and shape parameters that allowed us to confidently discriminate between point sources and extended objects even from low-spatial-resolution imagery. In our set of 76 candidate clusters we found: 42 newly-confirmed bona-fide M31 clusters, 12 background galaxies, 17 foreground Galactic stars, 2 HII regions belonging to M31 and 3 unclassified (possibly M31 clusters or foreground stars) objects. The classification of a few other candidates not included in our survey has been also reassessed on various observational bases. All the sources of radial velocity estimates for M31 known globular clusters available in the literature have been compared and checked, and a homogeneous general list has been obtained for 349 confirmed clusters with radial velocity. Our results suggest that a significant number of genuine clusters (~>100) is still hidden among the plethora of known candidates proposed by various authors. Hence our knowledge of the globular cluster system of the M31 galaxy is still far from complete even in terms of simple membership. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 57 1164 Radial Velocities for M31 globular clusters
See also: J/A+A/416/917 : Revised Bologna Catalog of M31 glob. clusters (Galleti+, 2004) Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Name Name (as in Galleti et al., 2004, Cat. J/A+A/416/917) 8 I1 --- f Flag of the real nature of the entry (1) 10 I1 --- y Flag of the possible young clusters (2) 12- 14 A3 --- Class Classification Quality, from A to E in the sense of decreasing confidence level 16- 20 F5.2 mag Vmag ? V magnitude 22- 26 F5.2 mag V-K ? V-K colour index 28- 32 I5 km/s HRV ? Heliocentric radial velocity 34- 38 I5 km/s e_HRV ? rms uncertainty on HRV (3) 40- 57 A18 ---- r_HRV Reference (4)
Note (1): Flags on real nature of the entry as follows: 1 = confirmed GC 2 = GC candidates 3 = Controversial object 4 = confirmed galaxy 5 = confirmed H II Region 6 = confirmed star 7 = asterism (star-pattern that is not a constellation) Note (2): Flag of possible young clusters as follows: 0 = Fusi Pecci et al. (2005AJ....130..554F) Table 1 1 = sample A (B-V)<0.55 2 = sample B (Hbeta>3.5) 3 = sample A +B 4 = young from other source Table 2 of Fusi Pecci et al. (2005AJ....130..554F) 5 = candidates Table 3 of Fusi Pecci et al. (2005AJ....130..554F) Note (3): All errors that are <1 have been reported as 1. Note (4): The acronyms of entries excluded from the computation of the weighted mean are enclosed in parentheses. Acronyms are: HR = Dubath & Grillmair, 1997A&A...321..379D and Peterson et al., 1989, in Dynamics of dense stellar systems; Proceedings of the Workshop, Toronto, Canada, May 27, 28, 1988. Cambridge, England and New York, Cambridge University Press, p. 161-166. DG97 = Dubath & Grillmair, 1997A&A...321..379D P89 = Peterson et al., 1989dynamicofdenseP H91 = Huchra et al., 1991ApJ...370..495H H93 = Huchra et al., 1993ASPC...48..420H F93 = Federici et al., 1993A&A...274...87F J98 = Jablonka et al., 1998A&A...335..867J B00 = Barmby et al., 2000AJ....119..727B P02 = Perrett et al., 2002AJ....123.2490P G05 = Galleti et al., 2005A&A...436..535G G06 = This work V69 = van den Bergh, 1969ApJS...19..145V
Acknowledgements: Silvia Galleti, silvia.galleti2(at)unibo.it
(End) Silvia Galleti [INAF-OABO], Patricia Vannier [CDS] 23-Jun-2006
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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