Proper motions and variabilities of stars near the Orion Nebula

Details Proper motions and variabilities of stars near the Orion Nebula Proper motions and variabilities of stars near the Orion Nebula

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....95.1755j&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 95, June 1988, p. 1755-1782.

Astronomy and Astrophysics

Astronomy

243

Carbon Monoxide, Molecular Clouds, Orion Nebula, Stellar Motions, Variable Stars, H Ii Regions, Infrared Sources (Astronomy), Star Formation, Velocity Distribution

Scientific paper

Relative proper motions were measured and membership probabilities were determined for over 1000 stars within 15-arcmin of the center of the Orion Nebula, M42. About 900 of the stars are associated with the Orion complex. The motions are of sufficient precision to measure the internal velocity dispersions. These dispersions are nearly isotropic, and depend only weakly on magnitude and distance from the Trapezium. The corresponding velocity dispersion in one coordinate is just over 2 km/s. The distribution of stars follows closely the distribution of gas as measured by CO-13. The stars appear to be, at most, only weakly bound to the molecular cloud. A search for variable stars has found that nearly half of the member stars are either known variables or showed variation on the plates.

Affiliated with

Also associated with

No associations

Rating

Proper motions and variabilities of stars near the Orion Nebula 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 Proper motions and variabilities of stars near the Orion Nebula, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proper motions and variabilities of stars near the Orion Nebula will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1177179