Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...433..941g&link_type=abstract
Astronomy and Astrophysics, Volume 433, Issue 3, April III 2005, pp.941-954
Astronomy and Astrophysics
Astrophysics
21
Stars: Circumstellar Matter, Stars: Individual: Iras08448-4343, Ism: Jets And Outflows, Infrared: Ism, Ism: Lines And Bands, Radio Continuum: Ism
Scientific paper
We have performed a detailed study of the star-forming region associated with the IRAS source 08448-4343 in the cloud D of the Vela Molecular Ridge. Our investigation covers a wide spectral range from the near IR, through the thermal IR to the mm-band exploiting both imaging and spectroscopic facilities in each spectral regime. A picture emerges of a dust structure which hosts a near IR cluster and multiple well-collimated H2 jets; these jets originate from different sources lying in a compact region at the cluster centre. The peak of the 1.2 mm map does not coincide with the IRAS peak, thus tracing a less evolved and denser region with a colder dust with respect to that traced by IRAS. This view is also confirmed by the observations of CS transitions from J=2-1 to J=7-6. The mm peak can be associated with the position of a red object, already proposed in previous studies as the driving source of the main jet in the field. This jet, extended along more than 0.3 pc, is composed of individual knots whose radial velocities decrease with increasing distance from the central source, which is resolved into at least six 2 μm peaks. The reddest and coldest of these peaks is well aligned with the inner knots of the jet. The spectral energy distribution of the central source resembles that of an intermediate luminosity, Class I protostar, whose youth is discussed in terms of the efficiency of the energy transfer into the jet.
Caratti Garatti Alessio o.
Giannini Teresa
Liseau Rene
Lo Curto Gaspare
Lorenzetti Dario
No associations
LandOfFree
Star formation in the Vela Molecular Clouds: A new protostar powering a bipolar jet 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 Star formation in the Vela Molecular Clouds: A new protostar powering a bipolar jet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Star formation in the Vela Molecular Clouds: A new protostar powering a bipolar jet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1452000