Constraining the Mapping Between Initial Stellar Masses and Compact Remnants

Details Constraining the Mapping Between Initial Stellar Masses and Compact Remnants Constraining the Mapping Between Initial Stellar Masses and Compact Remnants

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..162m&link_type=abstract

XMM-Newton Proposal ID #04044202

Computer Science

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Rcw 117, Rcw 145, Xmm-Newton Proposal 04044202

Scientific paper

There is currently little observational guidance as to the masses of stars that leave behind neutron stars and black holes. Three of the four best constraints come from X-ray pulsars that are associated with young star clusters. Remarkably, all three of these limits suggests that the progenitors were massive, with lower limits between 20 and 50 Msun. Moreover, the neutron stars themselves appear to be highly-magnetized, with B~1e14 G, compared to B~1e12 G for an ordinary radio pulsar. More constraints on the masses of progenitors are clearly needed, so we are proposing a pilot study of 5 candidate young clusters of massive stars to search for X-ray pulsars.

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