1999A&A...346..441M


Query : 1999A&A...346..441M

1999A&A...346..441M - Astronomy and Astrophysics, volume 346, 441-452 (1999/6-2)

The circumstellar environment of IRAS 05327+3404.

MAGNIER E.A., WATERS L.B.F.M., GROOT P.J., VAN DEN ANCKER M.E., KUAN Y.-J. and MARTIN E.L.

Abstract (from CDS):

We continue our study of the young stellar object associated with IRAS 05327+3404. We have determined the spectral type of the central star to be K2. We show that the star is most likely seen directly, not via a reflection, and that the extinction is only AV∼2.3mag. The spectral energy distribution shows the presence of large amounts of circumstellar material. Near-IR and optical observations of the reflection nebula also demonstrate the presence of circumstellar material, and show the material to be arranged in a disk with a relatively wide central hole of ∼33° opening angle. The central hole and a CO outflow are co-aligned, and are roughly aligned with the ionized outflow. Several surprising aspects remain: Although the system has a strong ionized outflow, there is little or no evidence of active accretion in the form of UV excess, veiling, or strong high-Balmer line emission. Also, the spectral energy distribution is very wide, and suggests that the original birth cloud had a large rotational velocity. We propose that the relative isolation of the system from other star formation activity may explain the relatively large circumstellar disk for a system with a well-exposed central star.

Abstract Copyright:

Journal keyword(s): stars: circumstellar matter - stars: evolution - stars: formation - stars: mass-loss - stars: pre-main sequence

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 981 2
2 RAFGL 490 Y*O 03 27 38.7928952784 +58 47 00.025298088           ~ 347 0
3 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1294 0
4 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 834 0
5 IRAS 05327+3404 Y*O 05 36 05.9747181336 +34 06 11.867057640     18.62     K2IIIe 15 1
6 M 36 OpC 05 36 20 +34 08.1   6.09 6.0     ~ 166 2
7 NAME NGC 2071 IR SFR 05 47 04.4 +00 21 49           ~ 66 0
8 GD 71 WD* 05 52 27.6198591816 +15 53 13.228887444 11.675 12.783 13.032 13.169 13.337 DA1.5 356 0
9 HD 40335 * 05 58 13.5236842920 +01 51 23.007423204   7.16 6.91     A1II 82 0
10 NGC 2682 64 SB* 08 51 05.7565036056 +11 43 46.965390960 14.970 14.75 14.053   13.254 ~ 53 0
11 HD 325367 Or* 16 03 05.4915085848 -40 18 25.426727676   11.40 8.50     M0 311 0
12 NAME rho Oph Complex reg 16 25 -23.5           ~ 77 1

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2022.05.20-13:03:44

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