Cepheids and Long‐Period Variables in NGC 4258 Conference Paper uri icon

abstract

  • We present preliminary results of a survey for Cepheids and long-period variables in NGC 4258. This galaxy plays a key role in the Extragalactic Distance Scale due to its very precise and accurate maser-based distance. Our observations were obtained at the Gemini North Observatory in the gri bands over 22 epochs spanning 4 years. We have discovered long-period Cepheids which we have used to extend the P-L relation in this galaxy beyond its previous limit of P<45 days. This will enable a more accurate calibration of the P-L relation in this important galaxy. Additionally, we have identified long-period variables and present their properties. © 2009 American Institute of Physics.

author list (cited authors)

  • Hoffmann, S. L., Macri, L. M., & Pellerin, A.

publication date

  • January 1, 2009 11:11 AM

publisher

  • AIP  Publisher