2003A&A...402..183L


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.09CEST16:51:30

2003A&A...402..183L - Astronomy and Astrophysics, volume 402, 183-187 (2003/4-4)

The 1.2mm image of the β Pictoris disk.

LISEAU R., BRANDEKER A., FRIDLUND M., OLOFSSON G., TAKEUCHI T. and ARTYMOWICZ P.

Abstract (from CDS):

We present millimeter imaging observations in the 1200µm continuum of the disk around β Pic. With the 25" beam, the β Pic disk is unresolved perpendicularly to the disk plane (≤10"), but slightly resolved in the northeast-southwest direction (26"). Peak emission is observed at the stellar position. A secondary maximum is found 1000AU along the disk plane in the southwest, which does not positionally coincide with a similar feature reported earlier at 850µm. Arguments are presented which could be seen in support of the reality of these features. The observed submm/mm emission is consistent with thermal emission from dust grains, which are significantly larger than those generally found in the interstellar medium, including mm-size particles, and thus more reminiscent of the dust observed in protostellar disks. Modelling the observed scattered light in the visible and the emission in the submm/mm provides evidence for the particles dominating the scattering in the visible/NIR and those primarily responsible for the thermal emission at longer wavelengths belonging to different populations.

Abstract Copyright:

Journal keyword(s): stars: individual: β Pictoris - circumstellar matter - planetary systems: formation - protoplanetary disks - ISM: dust, extinction

Status at CDS:  

CDS comments: Fig.2, Table 1: Features A, B, C, in beta Pic disk not in SIMBAD.

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 QSO B0537-441 BLL 05 38 50.36155219 -44 05 08.9389165   15.77 16.48 16   ~ 779 2
2 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1632 1

    Equat.    Gal    SGal    Ecl

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2020.04.09-16:51:30

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