2008A&A...492..731M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST00:02:17

2008A&A...492..731M - Astronomy and Astrophysics, volume 492, 731-734 (2008/12-4)

Near-infrared multiwavelength imaging polarimetry of the low-mass proto-stellar object HL Tauri.

MURAKAWA K., OYA S., PYO T.-S. and ISHII M.

Abstract (from CDS):

We present the JHK-band high-resolution polarimetric images of the low-mass proto-stellar object HL Tau using the adaptive optics-equipped CIAO instrument on the Subaru telescope. Our polarization images show a butterfly-shaped polarization disk with an ∼0.9"x3.0" extension. In the nebula, where polarization vectors are centro-symmetrically aligned, the polarization is as high as PJ∼30%, PH∼42%, and PK∼55%. On the other hand, low polarizations of P<3% in the J, H, and K bands and a low color excess ratio of EJ–H/EH–K=1.1 compared to the standard cloud value of 1.75 are detected towards the central star. We estimated the upper limit of the grain sizes amax to be 0.4µm in the nebula and >0.7µm in the line of sight towards the central star. Our high-resolution polarimetric data, which spatially resolves the polarization disk, provides us with important information about grain growth in the region close to the central star.

Abstract Copyright:

Journal keyword(s): polarization - ISM: dust, extinction

Simbad objects: 9

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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 HHL 5 HII 03 07 24.2 +58 30 45           ~ 143 0
2 V* V512 Per Or* 03 29 03.7567945196 +31 16 03.959183877           ~ 348 0
3 LDN 1551 DNe 04 31 30.0 +18 12 30           ~ 768 1
4 V* HL Tau Or* 04 31 38.471952 +18 13 58.08504   15.89 14.49 14.39   K5 1201 0
5 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
6 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3479 0
7 V* R Mon Ae* 06 39 09.9538710861 +08 44 09.559404231 10.76 12.46 11.85 10.96 10.25 B8IIIe 501 0
8 RAFGL 2136 SFR 18 22 26.8740 -13 30 17.177           ~ 244 0
9 V* V429 Cyg C* 20 11 06.1515376542 +36 06 48.950583736       10.13   C5,4J 36 0

    Equat.    Gal    SGal    Ecl

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2020.07.14-00:02:17

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