Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569

Details Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569 Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569

2004-02-25

arxiv.org/abs/astro-ph/0402599v1

Astron.Astrophys. 419 (2004) 301-318

Astronomy and Astrophysics

Astrophysics

19 pages, 10 figures. Accepted by A&A

Scientific paper

10.1051/0004-6361:20034561

We present a study of the stellar parameters, distances and spectral energy distributions (SEDs) of HD 34282 and HD 141569, two pre-main sequence Herbig AeBe stars. Both objects have been reported to show `anomalous positions' in the HR diagram in the sense that they appear below the main sequence. A significant result of this work is that both stars are metal-deficient. The {\it Hipparcos} distance of HD 34282 is very uncertain and the current study places the star at the expected evolutionary position in the HR diagram, i.e. as a PMS star. The distance for HD 141569 found in this work matches the {\it Hipparcos} distance, and the problem of its anomalous position is solved as a result of the low metallicity of the object: using the right metallicity tracks, the star is in the PMS region. The SEDs are constructed using data covering ultraviolet to millimetre wavelengths. Physical, non-parametric models, have been applied in order to extract some properties of the disks surrounding the stars. The disk around HD 34282 is accreting actively, it is massive and presents large grains in the mid-plane and small grains in the surface. HD 141569 has a very low mass disk, which is in an intermediate stage towards a debris-type disk.

Affiliated with

Also associated with

No associations

Rating

Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569 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 Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-484225