1998AJ....116..245A


Query : 1998AJ....116..245A

1998AJ....116..245A - Astron. J., 116, 245-253 (1998/July-0)

IRAS 06562-0337, the Ironclad nebula: a new young star cluster.

ALVES D.R., HOARD D.W. and RODGERS B.

Abstract (from CDS):

IRAS 06562-0337 has been the recent subject of a classic debate: is it a proto-planetary nebula or a young stellar object? We present the first 2 µm image of IRAS 06562-0337, which reveals an extended diffuse nebula containing approximately 70 stars inside a 30" radius around a bright, possibly resolved, central object. The derived stellar luminosity function is consistent with that expected from a single coeval population, and the brightness of the nebulosity is consistent with the predicted flux of unresolved low-mass stars. The stars and nebulosity are spatially coincident with strong CO line emission. We therefore identify IRAS 06562-0337 as a new young star cluster embedded in its placental molecular cloud. The central object is likely a Herbig Be star, M ~ 20 M☉, which may be seen in reflection. We present medium-resolution high signal-to-noise ratio 1997 epoch optical spectra of the central object. Comparison with previously published spectra shows new evidence for time-variable permitted and forbidden line emission, including Si II, Fe II, [Fe II], and [O I]. We suggest that the origin is a dynamic stellar wind in the extended stratified atmosphere of the massive central star in IRAS 06562-0337.

Abstract Copyright: ∼

Journal keyword(s): Infrared Radiation - ISM: Molecules - Stars: Formation - Stars: Pre-Main-Sequence

Simbad objects: 3

goto Full paper

goto View the references in ADS

Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 Ass Mon R 2 As* 06 07 47.8 -06 22 55           ~ 47 1
2 EM* MWC 137 Ae* 06 18 45.5220873216 +15 16 52.244494608 12.89 13.30 13.759 11.67 10.31 sgB[e]d 259 1
3 PN MaC 1-1 Ae? 06 58 44.3623639536 -03 41 09.981124008   16.23 15.0     O9?e 40 1

To bookmark this query, right click on this link: simbad:objects in 1998AJ....116..245A and select 'bookmark this link' or equivalent in the popup menu