Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-03-07
Astronomy and Astrophysics
Astrophysics
8 pages, 5 figures, accepted by Astronomy and Astrophysics
Scientific paper
10.1051/0004-6361:20052726
We present the results of optical and near-IR spectroscopic and near-IR photometric observations of the emission-line stars Hen3-298 and Hen3-303. Strong emission in the H-alpha line is found in both objects. The presence of Fe II and [O I] emission lines in the spectrum of Hen3-298 indicates that it is a B[e] star. The double-peaked CO line profiles, found in the infrared spectrum of Hen3-298, along with the optical line profiles suggest that the star is surrounded by a rotating circumstellar disk. Both objects also show infrared excesses, similar to those of B[e] stars. The radial velocities of the absorption and emission lines as well as a high reddening level suggest that the objects are located in the Norma spiral arm at a distance of 3-4.5 kpc. We estimated a luminosity of log (L/L_sun) ~ 5.1 and a spectral type of no earlier than B3 for Hen3-298. Hen3-303 seems to be a less luminous B-type object (log (L/L_sun) ~ 4.3), located in the same spiral arm.
Bjorkman Karen S.
Grosso Monica
Hinkle Kenneth
Levato Hugh
Marang Freddy
No associations
LandOfFree
Properties of galactic B[e] supergiants. IV. Hen3-298 and Hen3-303 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 Properties of galactic B[e] supergiants. IV. Hen3-298 and Hen3-303, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Properties of galactic B[e] supergiants. IV. Hen3-298 and Hen3-303 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-557798