Spectroscopy of a stream of G-stars in the area of the open cluster M67

Details Spectroscopy of a stream of G-stars in the area of the open cluster M67 Spectroscopy of a stream of G-stars in the area of the open cluster M67

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011hsa6.conf..526b&link_type=abstract

Highlights of Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA), held

Astronomy and Astrophysics

Astrophysics

Scientific paper

The systematic study of selected open clusters by our team lead to the production of the best set of Strömgren photometry ever obtained of the old open cluster M67. Its analysis showed a previously unknown clump of more than 60 stars in the HR diagram, located below the cluster main sequence. The spatial distribution of these stars suggested that most of them could be cluster members and two alternative hypothesis were proposed: (1) if members, they would be binary systems composed by a white dwarf and a red dwarf, i.e. pre-cataclysmic variable systems; and (2) if non-members, they would constitute a stream of G-type stars placed behind the cluster. Medium dispersion spectra taken using the PMAS/PPAK spectrograph at 3.5 m telescope in Calar Alto lead to the conclusion that all stars are F--G main sequence stars, and therefore the first hypothesis can be discarded. We are acquiring new uvby-H_eta photometric data with the Wide Field Camera of INT and, in addition, we are carrying out an astrometric study with the Meridian Circle of San Fernando CMASF at El Leoncito (Argentina) to derive properties of stars fainter than our previous survey and covering a wider area in the cluster region. The new data will yield proper motions of the stars in the clump as well as allow to study the properties of the corona of M67.

Affiliated with

Also associated with

No associations

Rating

Spectroscopy of a stream of G-stars in the area of the open cluster M67 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 Spectroscopy of a stream of G-stars in the area of the open cluster M67, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopy of a stream of G-stars in the area of the open cluster M67 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-740841