An Age Estimate for the beta Pictoris Analog HR 4796A

Details An Age Estimate for the beta Pictoris Analog HR 4796A An Age Estimate for the beta Pictoris Analog HR 4796A

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...454..910s&link_type=abstract

Astrophysical Journal v.454, p.910

Astronomy and Astrophysics

Astronomy

97

Stars: Binaries: Visual, Stars: Individual Bright Star Number: Hr 4796, Stars: Circumstellar Matter, Stars: Evolution

Scientific paper

We have obtained a high-resolution, moderate signal-to-noise spectrum for the M dwarf companion to HR 4796A, an AO star with a β Pictoris-type IR excess. The spectrum of the M star shows an extraordinarily strong lithium 6708 Å absorption line with an equivalent width of 550 mÅ. Age estimates derived from the lithium strength and from pre-main-sequence isochrone fitting indicate an age of about 8 ± 2 Myr for HR 4796B. Assuming this age is also applicable to HR 4796A, we conclude that HR 4796A is a relatively normal A star seen at an unusual time (i.e., when it is very young) rather than an A star of "average" age which has somehow managed to retain or acquire a dense, circumstellar disk, in rough agreement with conclusions reached previously by Jura et al.

Affiliated with

Also associated with

No associations

Rating

An Age Estimate for the beta Pictoris Analog HR 4796A 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 An Age Estimate for the beta Pictoris Analog HR 4796A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Age Estimate for the beta Pictoris Analog HR 4796A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1257961