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Local Stellar Kinematics from RAVE data – V. Kinematic Investigation of the Galaxy with Red Clump Stars

  • S. Karaali (a1), S. Bilir (a1), S. Ak (a1), E. Yaz Gökçe (a1), Ö. Önal (a1) and T. Ak (a1)...

Abstract

We investigated the space velocity components of 6 610 red clump (RC) stars in terms of vertical distance, Galactocentric radial distance and Galactic longitude. Stellar velocity vectors are corrected for differential rotation of the Galaxy which is taken into account using photometric distances of RC stars. The space velocity components estimated for the sample stars above and below the Galactic plane are compatible only for the space velocity component in the direction to the Galactic rotation of the thin disc stars. The space velocity component in the direction to the Galactic rotation (V lsr) shows a smooth variation relative to the mean Galactocentric radial distance (Rm ), while it attains its maximum at the Galactic plane. The space velocity components in the direction to the Galactic centre (U lsr) and in the vertical direction (W lsr) show almost flat distributions relative to Rm , with small changes in their trends at Rm ~ 7.5 kpc. U lsr values estimated for the RC stars in quadrant 180° < l ⩽ 270° are larger than the ones in quadrants 0° < l ⩽ 90° and 270° < l ⩽ 360°. The smooth distribution of the space velocity dispersions reveals that the thin and thick discs are kinematically continuous components of the Galaxy. Based on the W lsr space velocity components estimated in the quadrants 0° < l ⩽ 90° and 270° < l ⩽ 360°, in the inward direction relative to the Sun, we showed that RC stars above the Galactic plane move towards the North Galactic Pole, whereas those below the Galactic plane move in the opposite direction. In the case of quadrant 180° < l ⩽ 270°, their behaviour is different, i.e. the RC stars above and below the Galactic plane move towards the Galactic plane. We stated that the Galactic long bar is the probable origin of many, but not all, of the detected features.

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References

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Ak, S., Bilir, S., Karaali, S., & Buser, R. 2007a, AN, 328, 169
Ak, S., Bilir, S., Karaali, S., Buser, R., & Cabrera-Lavers, A. 2007b, NewA, 12, 605
Antoja, T., et al. 2012, MNRAS, 426L, 1
Bilir, S., Cabrera-Lavers, A., Karaali, S., Ak, S., Yaz, E., & López-Corredoira, M. 2008, PASA, 25, 69
Bilir, S., Karaali, S., Ak, S., Önal, Ö., Daǧtekin, N. D., Yontan, T., Gilmore, G., & Seabroke, G. M. 2012, MNRAS, 421, 3362
Bilir, S., Karaali, S., Ak, S., Yaz, E., & Hamzaoğlu, E. 2006, NewA, 12, 234
Binney, J., & Tremain, S. 1998, Galactic Dynamics (Princeton, NJ: Princeton Univ. Press)
Casetti-Dinescu, D. I., Girard, T. M., Korchagin, V. I., & van Altena, W. F. 2011, ApJ, 728, 7
Cabrera-Lavers, A., Bilir, S., Ak, S., Yaz, E., & López-Corredoira, M. 2007, A&A, 464, 565
Coşkunoğlu, B., Ak, S., Bilir, S., Karaali, S., Önal, Ö., Yaz, E., Gilmore, G., & Seabroke, G. M. 2012, MNRAS, 419, 2844
Coşkunoğlu, B., et al. 2011, MNRAS, 412, 1237
Dehnen, W. 1998, AJ, 115, 2384
Dinescu, D. I., Girard, T. M., & van Altena, W. F. 1999, AJ, 117, 1792
Duran, Ş., Ak, S., Bilir, S., Karaali, S., Ak, T., Bostancı, Z. F., & Coşkunoğlu, B. 2013, PASA, 30, 43
ESA, 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200. ESA, Noordwijk
Fiorucci, M., & Munari, U. 2003, A&A, 401, 781
Groenewegen, M. A. T. 2008, A&A, 488, 25
Helmi, A., White, S. D. M., de Zeeuw, P. T., & Zhao, H. 1999, Natur, 402, 53
Hernquist, L. 1990, ApJ, 356, 359
Ibata, R. A., Gilmore, G., & Irwin, M. J. 1994, Natur, 370, 194
Johnson, D. R. H., & Soderblom, D. R. 1987, AJ, 93, 864
Johnston, K. V., Spergel, D. N., & Hernquist, L. 1995, ApJ, 451, 598
Larsen, J. A., & Humphreys, R. M. 1996, ApJ, 468, 99
Larsen, J. A., Humphreys, R. M., & Cabanela, J. E. 2008, ApJ, 687L, 17
Majewski, S. R., Skrutskie, M. F., Weinberg, M. D., & Ostheimer, J. C. 2003, ApJ, 599, 1082
Mihalas, D., & Binney, B. Galactic Astronomy: Structure and Kinematics. 2nd ed., San Francisco, CA: W.H. Freeman, 1981
Miyamoto, M., & Nagai, R. 1975, PASJ, 27, 533
Newberg, H. J., et al. 2002, ApJ, 569, 245
Parker, J. E., Humphreys, R. M., & Beers, T. C. 2004, AJ, 127, 1567
Parker, J. E., Humphreys, R. M., & Larsen, J. A. 2003, AJ, 126, 1346
Pauli, E. M. 2005, Prof. G. Manev's Legacy in Contemporary Astronomy, Theoretical and Gravitational Physics, ed. Gerdjikov, V. and Tsvetkov, M.), (Sofia, Bulgaria: Heron Press Limited), 185
Roeser, S., Demleitner, M., & Schilbach, E. 2010, AJ, 139, 2440
Siebert, A., et al. 2011, AJ, 141, 187
Siebert, A., et al. 2012, MNRAS, 425, 2335
Steinmetz, M., et al. 2006, AJ, 132, 1645
Williams, M. E. K., et al. 2013, MNRAS, 2013, MNRAS, 436, 101
Williams, M. E. K., et al. 2011, ApJ, 728, 102
Yanny, B., et al. 2003, ApJ, 588, 824
Yaz, E., & Karaali, S. 2010, NewA, 15, 234

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Local Stellar Kinematics from RAVE data – V. Kinematic Investigation of the Galaxy with Red Clump Stars

  • S. Karaali (a1), S. Bilir (a1), S. Ak (a1), E. Yaz Gökçe (a1), Ö. Önal (a1) and T. Ak (a1)...

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