Hostname: page-component-848d4c4894-sjtt6 Total loading time: 0 Render date: 2024-06-16T01:21:05.382Z Has data issue: false hasContentIssue false
  • English
  • Français

Classical Cepheids behind the Galactic bulge

Published online by Cambridge University Press:  17 July 2015

N. Matsunaga
N. Matsunaga*
Affiliation:
Department of Astronomy, The University of Tokyo, Japan
Get access

Abstract

Severe interstellar extinction toward the Galactic plane has prevented the investigation of stellar populations in that region. Pulsating variable stars, particularly Cepheids and Miras, are useful tracers because their distances and ages can be determined accurately. Infrared observations of these variable stars in the obscured regions can provide useful information about the hidden parts of the Galaxy. These objects can also provide complimentary information to observations made by the Gaia spacecraft because highly-obscured objects cannot be detected by Gaia. We have carried out a near-infrared survey of variable stars near the Galactic bulge, between − 10 and + 10 degrees in galactic longitude, using the IRSF 1.4 m telescope and SIRIUS near-infrared camera in South Africa. Here as an initial result we report the discovery of 19 classical Cepheids behind the bulge.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 68: The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases , 2014 , pp. 279 - 282
Copyright
© EAS, EDP Sciences, 2015

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bhardwaj, A., et al., 2015, MNRAS, in press [arXiv:1412.4891]
Dame, T.M., et al., 1987, ApJ, 322, 706CrossRef
Dame, T.M., & Thaddeus, P., 2008, ApJ, 683, L143CrossRef
Feast, M.W., Menzies, J.W, Matsunaga, N., & Whitelock, P.A., 2014, Nature, 509, 342CrossRef
Feast, M.W., & Whitelock, P.A., 2014, IAUS, 298, 40
Launhardt, R., Zylka, R., & Mezger, P.G., 2002, A&A, 384, 112
Matsunaga, N., et al., 2009, MNRAS, 399, 1709CrossRef
Matsunaga, N., et al., 2011, Nature, 477, 188CrossRef
Matsunaga, N., et al., 2013, MNRAS, 429, 385CrossRef
Matsunaga, N., et al., 2015, ApJ, 799, 46CrossRef
Nagayama, T., et al., 2003, in “Instrument Design and Performance for Optical/Infrared Ground-Based Telescopes”, ed. Iye, M. & Moorwood, A.F.M. (SPIE, Vol. 4841, Bellingham), p. 459CrossRefGoogle Scholar
Oort, J.H., Kerr, F.J., & Westerhout, G., 1958, MNRAS, 118, 379
Reid, M.J., et al., 2009, ApJ, 700, 137CrossRef
Reid, M.J., et al., 2014, ApJ, 783, 130CrossRef
Reylé, C., Marshall, D.J., Schultheis, M., & Robin, A.C., 2008, in “SF2A 2008”, ed. Charbonnel, C., Combes, F. & R., Samadi, p. 29Google Scholar
Schultheis, M., et al., 2014, A&A, 566, 120
Soszyński, I., et al., 2008, Acta Astron., 58, 163
Stark, A.A., et al., 2004, ApJ, 614, L41CrossRef
Whitelock, P.A., Feast, M.W., & van Leeuwen, F., 2008, MNRAS, 386, 313CrossRef