2008A&A...488L..75M


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.02CEST12:58:49

2008A&A...488L..75M - Astronomy and Astrophysics, volume 488, L75-78 (2008/9-4)

VLT/NACO and Subaru/CIAO JHK-band high-resolution imaging polarimetry of the Herbig Be star R Monocerotis.

MURAKAWA K., PREIBISCH T., KRAUS S., AGEORGES N., HOFMANN K.-H., ISHII M., OYA S., ROSEN A., SCHERTL D. and WEIGELT G.

Abstract (from CDS):

We investigate the dust properties of the disk and envelope of the Herbig Be star R Mon by means of near-infrared multiwavelength imaging polarimetry. We obtained JHK-band polarimetric images using the adaptive optics instruments NACO on the VLT, and CIAO on the Subaru telescope. Our NACO JKS-band images of ∼0.1" angular resolution resolve clearly the R Mon binary system as well as twisted string-like features in the fan-shaped lobe. The polarimetric images reveal a butterfly-shaped polarization disk with an almost constant shape and an extension of 4" in the J, H, and K bands. In this region, the polarization values are as low as PJ∼7%, PH∼2%, and PK∼1%, and the polarization vectors are not systematically aligned along the equatorial plane. On the other hand, highly polarized scattered light is detected in the fan-shaped lobe (PJ∼24%, PH∼33%, and PK∼53%). Our polarimetric data suggests the presence of multiple grain populations in the R Mon nebula. From our one-dimensional single scattering modeling, the maximum grain size in the nebula at large scale is estimated to be 0.23µm. On the other hand, the aforementioned properties of the polarization disk and a nearly spherical appearance of the nebulosity close to the central star suggests the presence of large grains (micron-size or larger) in the polarization disk.

Abstract Copyright:

Journal keyword(s): stars: individual: R Monocerotis - circumstellar matter - stars: imaging - ISM: reflection nebulae - infrared: stars

Status at CDS:  

CDS comments: GSPC S824-E not identified.

Simbad objects: 9

goto Full paper

goto View the reference in ADS

Number of rows : 9

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 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1202 1
2 V* HL Tau TT* 04 31 38.471952 +18 13 58.08504   15.89 14.49 14.39   K5 1169 0
3 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
4 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 1976 1
5 V* R Mon Ae* 06 39 09.9538710861 +08 44 09.559404231 10.76 12.46 11.85 10.96 10.25 B8IIIe 500 0
6 GSPC S372-S * 09 15 50.6 -36 32 34           ~ 6 0
7 IRAS 09371+1212 pA* 09 39 53.96 +11 58 52.6           K7II/III 156 0
8 RAFGL 2136 SFR 18 22 26.8740 -13 30 17.177           ~ 238 0
9 RAFGL 2591 Y*O 20 29 25.03656 +40 11 20.3316           ~ 565 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008A&A...488L..75M and select 'bookmark this link' or equivalent in the popup menu


2020.04.02-12:58:49

© Université de Strasbourg/CNRS

    • Contact