J/AJ/134/706 New globular clusters in M 31 (Kim+, 2007)
Wide-field survey of globular clusters in M 31. I. A catalog of new clusters.
Kim S.C., Lee M.G., Geisler D., Sarajedini A., Park H.S., Hwang H.S.,
Harris W.E., Seguel J.C., Von Hippel T.
<Astron. J., 134, 706-720 (2007)>
=2007AJ....134..706K 2007AJ....134..706K
ADC_Keywords: Galaxies, nearby ; Clusters, globular ; Photometry, CMT1T2V
Keywords: galaxies: individual (M31, NGC 224) - galaxies: spiral -
galaxies: star clusters - Local Group
Abstract:
We present the result of a wide-field survey of globular clusters
(GCs) in M31 covering a 3°x3° field centered on M31. We have
searched for GCs on CCD images taken with Washington CMT1 filters at
the KPNO 0.9m telescope using the following steps: (1) inspection of
morphological parameters given by the SExtractor package such as
stellarity, full width at half-maximum, and ellipticity; (2)
consulting the spectral types and radial velocities obtained from
spectra taken with the Hydra spectrograph at the WIYN 3.5m telescope;
and (3) visual inspection of the images of each object. We have found
1164 GCs and GC candidates, of which 605 are newly found GCs and GC
candidates and 559 are previously known GCs. Among the new objects
there are 113 genuine GCs, 258 probable GCs, and 234 possible GCs,
according to our classification criteria. Among the known objects
there are 383 genuine GCs, 109 probable GCs, and 67 possible GCs. In
total there are 496 genuine GCs, 367 probable GCs, and 301 possible
GCs. Most of these newly found GCs have T1 magnitudes of 17.5-19.5mag
[17.9<V<19.9mag assuming (C-T1)∼1.5], and (C-T1) colors in range 1-2.
Description:
We obtained Washington C and M and broadband Kron-Cousins R images
using the T2KA CCD camera at the KPNO 0.9m telescope on the nights
of UT 1996 October 14-25 and UT 1998 October 19. We carried out
spectroscopic observation using the Hydra multifiber bench
spectrograph and T2KC CCD at the WIYN 3.5m telescope on the
nights of UT 2000 September 7-9 and UT 2001 November 2-4.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table5.dat 80 113 List of new genuine globular clusters (class 1)
table6.dat 80 258 List of new probable globular clusters (class 2)
table7.dat 80 234 List of new possible globular clusters (class 3)
table8.dat 80 111 List of stars identified in this study
table9.dat 86 21 List of galaxies identified in this study
--------------------------------------------------------------------------------
See also:
J/A+A/416/917 : M31 globular clusters Revised Bologna Catalog (Galleti+ 2004)
J/A+A/449/143 : Photometry of M31 globular cluster candidates (Ma+, 2006)
J/A+A/456/985 : 76 M31 candidate clusters radial velocities (Galleti+ 2006)
J/A+A/471/127 : New globular clusters in M31 (Galleti+, 2007)
J/A+AS/116/447 : M31 globulars clusters ellipticities (Staneva+, 1996)
J/AJ/114/1488 : Globulars in M31 (Holland+ 1997)
J/AJ/119/727 : M31 globular clusters photometry (Barmby+, 2000)
J/AJ/122/2458 : M31 globular clusters from HST (Barmby+, 2001)
J/AJ/123/2490 : RV and [Fe/H] of M31 globular cluster system (Perrett+, 2002)
J/AJ/133/2764 : M31 globular clusters structural parameters (Barmby+, 2007)
J/AcA/48/455 : Globular Clusters in M31 and M33 (Mochejska+, 1998)
J/ApJS/173/643 : GALEX UV photometry of M31 Globular Clusters (Rey+, 2007)
J/MNRAS/392/L55 : M31 globular clusters from K-band photometry (Peacock+, 2009)
Byte-by-byte Description of file: table[56789].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- ID Source ID Number in table (1)
5- 6 I2 h RAh Hour of Right Ascension (J2000)
8- 9 I2 min RAm Minute of Right Ascension (J2000)
11- 15 F5.2 s RAs Second of Right Ascension (J2000)
17 A1 --- DE- Sign of Declination (J2000)
18- 19 I2 deg DEd Degree of Declination (J2000)
21- 22 I2 arcmin DEm Arcminute of Declination (J2000)
24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000)
29- 34 F6.3 mag T1mag ? Washington T1 band magnitude
36- 40 F5.3 mag e_T1mag ? Error in T1mag
42- 47 F6.3 mag M-T1 ? Washington (M-T1) color index
49- 53 F5.3 mag e_M-T1 ? Error in M-T1
55- 60 F6.3 mag C-T1 ? Washington (C-T1) color index
62- 66 F5.3 mag e_C-T1 ? Error in C-T1
68- 74 F7.1 km/s RV ? Radial velocity
76- 80 F5.1 km/s e_RV ? Error in RV
82- 86 A5 --- RBC2 RBC2 name (for table9.dat only) (2)
--------------------------------------------------------------------------------
Note (1): Sources identified in Simbad as
* [KLG2007] GC1 NNN in table5,
* [KLG2007] GC2 NNN in table6,
* [KLG2007] GC3 NNN in table7,
* [KLG2007] Star NNN in table 8 and
* [KLG2007] Galaxy NN in table9
Note (2): From Galleti et al., (20006, Cat. J/A+A/456/985),
BNNN = Bol NNN and BNNND = Bol DNNN in Simbad.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 29-Sep-2009