The Connection Between SX Phe and Blue Stragglers: Globular Cluster Variables as Period-Luminosity Relation Calibrators

Details The Connection Between SX Phe and Blue Stragglers: Globular Cluster Variables as Period-Luminosity Relation Calibrators The Connection Between SX Phe and Blue Stragglers: Globular Cluster Variables as Period-Luminosity Relation Calibrators

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21832209c&link_type=abstract

American Astronomical Society, AAS Meeting #218, #322.09; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The number of known SX Phoenicis (SX Phe) pulsators in Galactic globular clusters (GGCs) and the Local Group has more than doubled in recent years. Because all SX Phe in GGCs are likely blue stragglers, it has been suggested that their pulsational properties can constrain their evolutionary histories. We investigate the connection between SX Phe and blue stragglers via period-luminosity and color-magnitude diagrams. In particular, we verify distances to a large set of GGCs by fitting a carefully chosen set of nearby, unevolved subdwarfs to the cluster main sequences. We use these distances to analyze the pulsational properties of all known SX Phe, including SX Phe period-luminosity relations obtained using the SX Phe in these GGCs as calibrators, together with those in Local Group dwarf galaxies and their clusters. Finally, we discuss implications for blue straggler formation and evolution, and address both observational and theoretical avenues for further investigation.

Affiliated with

Also associated with

No associations

Rating

The Connection Between SX Phe and Blue Stragglers: Globular Cluster Variables as Period-Luminosity Relation Calibrators does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Connection Between SX Phe and Blue Stragglers: Globular Cluster Variables as Period-Luminosity Relation Calibrators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Connection Between SX Phe and Blue Stragglers: Globular Cluster Variables as Period-Luminosity Relation Calibrators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1742557