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J/A+A/502/91         Proper motions of stars near SgrA*        (Schoedel+, 2009)

The nuclear star cluster of the Milky Way: proper motions and mass. Schoedel R., Merritt D., Eckart A. <Astron. Astrophys. 502, 91 (2009)> =2009A&A...502...91S
ADC_Keywords: Stars, nearby ; Proper motions ; Photometry, infrared Keywords: instrumentation: adaptive optics - techniques: high angular resolution - stars: kinematics - Galaxy: center - Galaxy: structure Description: We used multi-epoch adaptive optics assisted near-infrared observations of the central parsec of the Galaxy obtained with NACO/CONICA at the ESO VLT. Stellar positions were measured via PSF fitting in the individual images and transformed into a common reference frame via suitable sets of reference stars. We measured the proper motions of more than 6000 stars within about 1pc projected distance of the supermassive black hole Sagittarius A*. The table contains for each measured star its projected distance from Sagittarius A*, its offsets in right ascension and declination from Sagittarius A* along with the corresponding uncertainties, its proper motion and the corresponding uncertainty in right ascension and declination, the Ks-band magnitude and the corresponding uncertainty, and its classification as early type in case such a classification exists. Objects: ---------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------- 17 45 40.04 -29 00 28 SgrA* = Name SGR A* ---------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tableb1.dat 84 6124 List of stars with measured proper motion in the Galactic center
See also: J/A+AS/97/587 : Galactic center stars JHK photometry (Ruelas-Mayorga+ 1993) J/AJ/106/2291 : UBV photometry toward Galactic Center (Reed 1993) J/A+AS/139/231 : Early-type stars towards the Galactic Centre (Dufton+, 1999) J/ApJ/470/864 : JHKL photometry of the Galactic Center (Blum+, 1996) J/A+A/373/608 : Early-type stars towards Galactic Center. II (Dufton+, 2001) J/MNRAS/348/1439 : OGLE II Galactic center proper motions (Sumi+, 2004) J/ApJ/642/861 : N-band imaging of the Galactic Center (Viehmann+, 2006) Byte-by-byte Description of file: tableb1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq Row number 6- 11 F6.3 arcsec Rp Projected distance from Sagittarius A* 13- 19 F7.3 arcsec oRA Offset from Sagittarius A* in Right ascension (1) 21- 25 F5.3 arcsec e_oRA Uncertainty of oRA 27- 33 F7.3 arcsec oDE Offset from Sagittarius A* in Declination (1) 35- 39 F5.3 arcsec e_oDE Uncertainty of oDE 41- 46 F6.1 km/s pmRA Proper motion in Right ascension (2) 48- 52 F5.1 km/s e_pmRA Uncertainty of pmRA (2) 54- 59 F6.1 km/s pmDE Proper motion in Declination (2) 61- 65 F5.1 km/s e_pmDE Uncertainty of pmDE (2) 67- 71 F5.2 mag Ksmag Magnitude in Ks band 73- 76 F4.2 mag e_Ksmag Uncertainty of Ksmag 78- 84 A7 --- Type Star classification (3)
Note (1): SgrA* position: RA=17:45:40.0409, DE=-29:00:28.118 (J2000) The position are given et the reference epoch Ep=J2004.44 Note (2): The conversion of the proper motions from arcsec per year to km/s was done by assuming a distance of 8.0kpc to the Galactic centre. Note (3): the classification is: early 1 = identified as early-type star in Paumard et al., 2006, Cat. J/ApJ/643/1011 early 2 = identified as early-type star in Buchholz et al., A&A, submitted (2009)
Acknowledgements: Rainer Schoedel, rainer(at)iaa.es
(End) Rainer Schoedel [IAA-CSIC, Spain], Patricia Vannier [CDS] 03-Mar-2009
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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