2008ApJ...679.1574O


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.20CET09:09:30

2008ApJ...679.1574O - Astrophys. J., 679, 1574-1581 (2008/June-1)

The Solar-System-Scale disk around AB Aurigae.

OPPENHEIMER B.R., BRENNER D., HINKLEY S., ZIMMERMAN N., SIVARAMAKRISHNAN A., SOUMMER R., KUHN J., GRAHAM J.R., PERRIN M., LLOYD J.P., ROBERTS L.C.Jr and HARRINGTON D.M.

Abstract (from CDS):

The young star AB Aurigae is surrounded by a complex combination of gas-rich and dust-dominated structures. The inner disk, which has not been studied previously at sufficient resolution and imaging dynamic range, seems to contain very little gas inside a radius of least 130 AU from the star. Using adaptive optics coronagraphy and polarimetry, we have imaged the dust in an annulus between 43 and 302 AU from the star, a region never seen before. An azimuthal gap in an annulus of dust at a radius of 102 AU, along with a clearing at closer radii inside this annulus, suggests the formation of at least one small body at an orbital distance of ∼100 AU. This structure seems consistent with crude models of mean motion resonances or accumulation of material at two of the Lagrange points relative to the putative object and the star. We also report a low significance detection of a point source in this outer annulus of dust. This source may be an overdensity in the disk due to dust accreting onto an unseen companion. An alternate interpretation suggests that the object's mass is between 5 and 37 times the mass of Jupiter. The results have implications for circumstellar disk dynamics and planet formation.

Abstract Copyright:

Journal keyword(s): Instrumentation: Adaptive Optics - Methods: Data Analysis - Stars: Planetary Systems - stars: individual (HD 31293) - Techniques: Image Processing

Simbad objects: 10

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Number of rows : 10

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 * 49 Cet PM* 01 34 37.7788265080 -15 40 34.898112472   5.667 5.607   5.54 A1V 231 0
2 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1660 1
3 NAME Tau-Aur Region SFR 04 30 +25.0           ~ 1182 1
4 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 901 2
5 * 10 UMa SB* 09 00 38.38067 +41 46 58.6051 4.440 4.390 3.960 3.57 3.35 F3V+G5V 323 0
6 HD 100546 Be* 11 33 25.4404858122 -70 11 41.239343121   6.71 6.30   6.64 A0VaekB8_lB 617 1
7 HD 107146 PM* 12 19 06.5022221429 +16 32 53.870713669   7.61   6.7   G2V 212 0
8 HD 141569 pr* 15 49 57.7484743862 -03 55 16.344023102 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 454 0
9 HD 142527 Ae* 15 56 41.8888096574 -42 19 23.245384377   9.04 8.34     F6III 431 1
10 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1101 3

    Equat.    Gal    SGal    Ecl

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2019.11.20-09:09:30

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