THE BULGE RADIAL VELOCITY ASSAY (BRAVA). II. COMPLETE SAMPLE AND DATA RELEASE

Journal Article · Thu Mar 15 00:00:00 EDT 2012 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/143/3/57· OSTI ID:22034696

Kunder, Andrea; De Propris, Roberto; Stubbs, Scott A ^[1]; Koch, Andreas ^[2]; Michael Rich, R; Johnson, Christian I; Reitzel, David B ^[3]; Howard, Christian D ^[4]; Juntai, Shen ^[5]; Yougang, Wang ^[6]; Robin, Annie C ^[7]; Kormendy, John ^[8]; Soto, Mario ^[9]; Frinchaboy, Peter ^[10]; Hongsheng, Zhao ^[11]; Origlia, Livia ^[12]

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1. Cerro Tololo Inter-American Observatory, Casilla 603, La Serena (Chile)
2. Zentrum fuer Astronomie der Universitaet Heidelberg, Landessternwarte, Koenigstuhl 12, Heidelberg (Germany)
3. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1562 (United States)
4. NASA Ames Research Center, MS 211-3 Moffett Field, CA 94035 (United States)
5. Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 (China)
6. Key Laboratory of Optical Astronomy, National Astronomical Observatoires, Chinese Academy of Sciences, Beijing 100012 (China)
7. Observatoire des sciences de l'Univers de Besancon, Besancon (France)
8. Department of Astronomy, University of Texas at Austin, Austin, TX 78712 (United States)
9. Departamento de Fisica, Universidad de la Serena, Benavente 980, La Serena (Chile)
10. Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129 (United States)
11. SUPA, School of Physics and Astronomy, University of St. Andrews, KY16 9SS (United Kingdom)
12. INAF, Osservatorio Astronomico di Bologna, Via Ranzani 1, IT 40127 Bologna (Italy)

We present new radial velocity measurements from the Bulge Radial Velocity Assay, a large-scale spectroscopic survey of M-type giants in the Galactic bulge/bar region. The sample of {approx}4500 new radial velocities, mostly in the region -10 Degree-Sign < l < +10 Degree-Sign and b Almost-Equal-To -6 Degree-Sign , more than doubles the existent published data set. Our new data extend our rotation curve and velocity dispersion profile to +20 Degree-Sign , which is {approx}2.8 kpc from the Galactic center. The new data confirm the cylindrical rotation observed at -6 Degree-Sign and -8 Degree-Sign and are an excellent fit to the Shen et al. N-body bar model. We measure the strength of the TiO{epsilon} molecular band as a first step toward a metallicity ranking of the stellar sample, from which we confirm the presence of a vertical abundance gradient. Our survey finds no strong evidence of previously unknown kinematic streams. We also publish our complete catalog of radial velocities, photometry, TiO band strengths, and spectra, which is available at the Infrared Science Archive as well as at UCLA.

• OSTI ID: 22034696
• Journal Information: Astronomical Journal (New York, N.Y. Online), Vol. 143, Issue 3; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION SPECTRA
ABUNDANCE
ASTRONOMY
ASTROPHYSICS
CATALOGS
DIAGRAMS
DISTANCE
EMISSION SPECTRA
GALAXIES
GIANT STARS
PHOTOMETRY
RADIAL VELOCITY
ROTATION
TITANIUM OXIDES