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J/A+A/471/127 New globular clusters in M31 (Galleti+, 2007)
An updated survey of globular clusters in M 31. II. Newly discovered bright and remote clusters. Galleti S., Bellazzini M., Federici L., Buzzoni A., Fusi Pecci F. <Astron. Astrophys., 471, 127-136 (2007)> =2007A&A...471..127G
ADC_Keywords: Galaxies, nearby ; Clusters, globular ; Radial velocities Keywords: galaxies: individual: M 31 - galaxies: star clusters - catalogs - galaxies: Local Group Abstract: We present the first results of a large spectroscopic survey of candidate globular clusters located in the extreme outskirts of the nearby M 31 galaxy. The survey is aimed at ascertaining the nature of the selected candidates to increase the sample of confirmed M 31 clusters lying more that 2° away from the center of the galaxy. We obtained low resolution spectra (λΔλ∼800-1300) of 48 targets selected from the Extended Source Catalogue of 2MASS, as in Galleti et al. (2005A&A...436..535G). The observed candidates have been robustly classified according to their radial velocity and by verifying their extended/point-source nature from ground-based optical images. We have also obtained a spectrum and a radial velocity estimate for the remote M 31 globular discovered by Martin et al. (2006MNRAS.371.1983M). Description: The imager/spectrograph DoLoRes at the 3.52m TNG telescope in La Palma (Canary Island, Spain) was used in service mode in various nights during the period October-December, 2005 (Run 1), and in visitor mode in the nights of October 10-15, 2006 (Run 2), to acquire long slit spectra of 38 M 31 CGCs. Long slit spectra for 16 CGCs in M 31 were obtained with the low resolution spectrograph BFOSC mounted at the 1.52m Cassini Telescope of the Loiano Observatory, near Bologna (Italy), during several runs in 2006: August 19-22 (Run 1), September 1-2 (Run 2), October 25-27 (Run 3), and November 22-23 (Run 4). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 89 49 Observed candidates globular cluster tableb3.dat 66 164 Globular clusters candidates from HST images m31rbc.dat 202 1983 Revised Bologna Catalog of M31 globular clusters and candidates: RBC V3.5 (Version March, 2008)
See also: J/A+A/416/917 : Revised Bologna Catalog of M31 globular cluster (Galleti+ 2004) J/A+AS/116/447 : M31 globulars clusters ellipticities (Staneva+, 1996) J/AcA/48/455 : Globular Clusters in M31 and M33 (Mochejska+, 1998) J/AJ/119/727 : M31 globular clusters photometry (Barmby+, 2000) J/AJ/122/2458 : M31 globular clusters from HST (Barmby+, 2001) J/A+A/449/143 : Photometry of M31 globular cluster candidates (Ma+, 2006) J/A+A/456/985 : Radial velocities of 76 M31 candidate clusters (Galleti+, 2006) http://www.bo.astro.it/M31 : M31 Globular Clusters Home Page Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 23 A23 --- 2MASX 2MASX or 2MASS designation (JHHMMSSss+DDMMSSs) 25- 29 F5.2 mag Kmag 2MASS K magnitude 32- 36 I5 km/s RV ? Radial velocity 38- 43 A6 --- n_RV Note on the measured velocity (1) 45 A1 --- f_RV [ab] Flag on object spectrum (2) 48- 51 I4 km/s e_RV rms uncertainty on RV 53- 58 A6 --- Obs1 Run and telescope used for RV data (3) 60- 64 I5 km/s RV2 ? Second radial velocity 66- 67 I2 km/s e_RV2 ? rms uncertainty on RV2 69- 74 A6 --- Obs2 Run and telescope used for RV2 data (3) 76- 79 F4.2 --- FWHM ? Ratio between the FWHM of the target and the FWHM of stars as measured on optical images 81- 82 A2 --- E/PS Extended (E) or point-source (PS) 84- 89 A6 --- Name Other name (4)
Note (1): Note as follows: (1) = Very uncertain RV estimates obtained during Run 1 at TNG; superseded by the estimates from other sources (2) = The radial velocity has been estimated from the stacked spectrum obtained by co-adding the spectra acquired in Run 1 and Run 2 at the Cassini telescope. M Star = M type star (EL) = Emission line Note (2): Flag as follows: a = Object with prominent emission lines in its spectrum. b = Object with M type spectrum (prominent TiO bands). Note (3): R1, R2, R3 etc., refer to the various observing runs at the TNG and Cassini (Loiano) telescopes, see Sect. 2. R1 LOI = 2006 August 19-22, Loiano Observatory R2 LOI = 2006 September 1-2, Loiano Observatory R3 LOI = 2006 October 25-27, Loiano Observatory R4 LOI = 2006 November 22-23, Loiano Observatory R1 TNG = 2005 October-December, La Palma TNG R2 TNG = 2006 October 10-15, La Palma TNG Note (4): The 2MASS counterpart of the remote cluster discovered by Martin et al. (2006MNRAS.371.1983M), here named MGC1 (for Martin-GC1), is in 2MASS-PSC instead of 2MASS-XSC as all other entries. MCGC1 (for Mackey-GC1) is GC1 from Mackey et al. (2007ApJ...655L..85M), [MHF2007] GC 1 in Simbad.
Byte-by-byte Description of file: tableb3.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Name Name of the globular clusters candidate (G1) 7 A1 --- S [SC] Spectroscopic confirmation (2) 9 A1 --- V [SCAGH] Confirmation via high resolution imaging (2) 11- 27 A17 --- Class Classification 29 I1 --- Cl [1/7] Global classification flag (3) 31- 35 I5 --- PropID Proposal ID 37- 45 A9 --- Cam Camera 47- 51 A5 --- Filt Filter 53- 61 A9 --- Dataset Dataset 63- 66 I4 s Exptime Exposure time
Note (2): Spectroscopic confirmation as follows: C = Cluster S = Star A = Asterism G = Galaxy H = HII region Note (3): Global classification flag as follows: 1 = confirmed globular cluster 2 = globular cluster candidates 3 = controversial object 4 = confirmed galaxy 5 = confirmed HII Region 6 = confirmed star 7 = asterism
Byte-by-byte Description of file: m31rbc.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq [1/7737] Sequential number 6- 11 A6 --- Name Name (G1) 13- 23 A11 --- OName Other name (G1) 25 I1 --- c1 [1/8] Classification (2) 27 I1 --- c2 [0/9] Confirmation flag (3) 29- 38 F10.7 deg RAdeg Right ascension, in decimal degrees (J2000) 40- 49 F10.7 deg DEdeg Declination, in decimal degrees (J2000) 51 I1 --- q_c3 [1/8] Original quality-class (4) 53 I1 --- c3 [0/6] Classification code (5) 55- 60 F6.3 mag Umag ?=0.000 U magnitude 62- 67 F6.3 mag Bmag ?=0.000 B magnitude 69- 74 F6.3 mag Vmag ?=0.000 V magnitude 76- 81 F6.3 mag Rmag ?=0.000 R magnitude 83- 88 F6.3 mag Imag ?=0.000 I magnitude 90- 95 F6.3 mag Jmag ?=0.000 J magnitude 97-102 F6.3 mag Hmag ?=0.000 H magnitude 104-109 F6.3 mag Kmag ?=0.000 K magnitude 111-117 F7.2 pix xpos X position (6) 119-125 F7.2 pix ypos Y position (6) 127-132 F6.2 --- rr [0.72/759.98] rr parameter (not explained) (6) 134-139 F6.2 --- Rp [0.16/173.10] Rp parameter (not explained) (6) 141-145 I5 km/s RV ?=9999 Radial velocity 147-150 I4 km/s e_RV ?=9999 rms uncertainty on RV 152-157 F6.3 mag NUV ?=99.999 Galex Near-UV magnitude (7) 159-163 F5.3 mag e_NUV ?=9.999 rms uncertainty on NUV 165-170 F6.3 mag FUV ?=99.999 Galex Far-UV magnitude (7) 172-176 F5.3 mag e_FUV ?=9.999 rms uncertainty on FUV 178-179 I2 h RAh Right ascension (J2000) 180 A1 --- --- [:] 181-182 I2 min RAm Right ascension (J2000) 183 A1 --- --- [:] 184-189 F6.3 s RAs Right ascension (J2000) 191 A1 --- DE- Declination sign (J2000) 192-193 I2 deg DEd Declination sign (J2000) 194 A1 --- --- [:] 195-196 I2 arcmin DEm Declination sign (J2000) 197 A1 --- --- [:] 198-202 F5.2 arcsec DEs Declination sign (J2000)
Note (2): Classification as follows: 1 = globular cluster 2 = candidate globular cluster 3 = controversial object 4 = galaxy 5 = region HII 6 = stars 7 = asterism 8 = extended cluster Note (3): Confirmation flag (HST,high resolution imaging, profile) as follows: 0 = no data 1 = globular cluster 4 = galaxy 5 = region HII 6 = stars 7 = asterism 9 = globular cluster (f=1) with -150<RV<300 Note (4): Original quality-class flag as follows: 1 = A from Battistini et al. and Kim et al. 2 = B from Battistini et al. and Kim et al. 3 = C from Battistini et al. and Kim et al. 4 = D from Battistini et al. and Kim et al. 5 = E from Battistini et al. and Kim et al. 6 = not flagged 7 = S from Kim et al. (2007AJ....134..706K) 8 = G from Kim et al. (2007AJ....134..706K) References are: Kim et al.: 2007AJ....134..706K Battistini et al.: 1980A&AS...42..357B, 1982A&A...113...39B, 1987A&AS...67..447B, 1993A&A...272...77B Note (5): BLCC (young cluster) code as follows: 1 = only sample A (color selected), from Fusi Pecci et al. (2005AJ....130..554F) table 1 2 = only sample B (Hbeta>3.5 selected), from Fusi Pecci et al. (2005AJ....130..554F) table 1 3 = sample A and B, from Fusi Pecci et al. (2005AJ....130..554F) table 1 4 = confirmed GCs and candidates BLCC, from Fusi Pecci et al. (2005AJ....130..554F) table 2 5 = unconfirmed GCs and candidates BLCC, from Fusi Pecci et al. (2005AJ....130..554F) table 3 6 = color (B-V)0<0.45 with E(B-V)=0.11 for Kim et al. (2007AJ....134..706K) Note (6): Estimated considering: PA=38° (Kent, 1989AJ.....97.1614K); Center of M31 (J2000): 00:42:44.31+41:16:09.4; DM=24.47 (783kpc) (Durrell et al., 2004AJ....128..260D; McConnachie et al., 2005MNRAS.356..979M) Note (7): From Rey et al., 2007ApJS..173..643R
Global notes: Note (G1): Nomenclature note: AUNNN = ACH NNN, Auriere et al., 1992A&A...256...95A BNNN = Bol NNN, Battistini et al., 1987A&AS...67..447B BNNND = Bol DNNN, Battistini et al., 1987A&AS...67..447B BANN = BA 3-NNN, Baade & Arp, 1964ApJ...139.1027B BHNN = identified with M31GC JHHMMSS+DDMMSS objects DAONNN = [CCS85] NNN, Crampton et al., 1985ApJ...288..494C GNNN = SKHB NNN, Sargent et al., 1977AJ.....82..947S H126 = [H32] 126, Hubble, 1932ApJ....76...44H MNNN = [MKK98] M 31 NNN, Mochejska et al., 1998AcA....48..455M MCECN = M31WFSC N MGCCNN = [MHF2007] GC NN, MacKey et al., 2007ApJ...655L..85M NBNNN = NBol NNN, Battistini et al., 1993A&A...272...77B SHNN = [S73] NN, 1985AstL...11..248S Sharov & Lyutyj VNNN = [V62] NNN, Vetesnik, 1962BAICz..13..180V 2MNNN, HECNN, HNN and SKNNNA objects are not in Simbad.
History: From electronic version of the journal catalog copied at http://www.bo.astro.it/M31 References: Galleti et al., Paper I 2006A&A...456..985G, Cat. J/A+A/456/985
(End) Patricia Vannier [CDS] 15-Nov-2007
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