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The O star hinterland of the Galactic starburst, NGC 3603

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The O star hinterland of the Galactic starburst, NGC 3603. / Drew, J. E.; Monguió, M.; Wright, N. J.

In: Monthly Notices of the Royal Astronomical Society, Vol. 486, No. 1, 01.06.2019, p. 1034-1044.

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Drew, J. E. ; Monguió, M. ; Wright, N. J. / The O star hinterland of the Galactic starburst, NGC 3603. In: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 486, No. 1. pp. 1034-1044.

Bibtex

@article{e17c3b031326492ba28c349b171cbed7,
title = "The O star hinterland of the Galactic starburst, NGC 3603",
abstract = "The very bright and compact massive young cluster, NGC 3603, has been cited as an example of a starburst in the Milky Way and compared with the much-studied R136/30 Doradus region in the Large Magellanic Cloud. Here we build on the discovery by Mohr-Smith et al. of a large number of reddened O stars around this cluster. We construct a list of 288 candidate O stars with proper motions (PMs), in a region of sky spanning 1.5 × 1.5 deg 2 centred on NGC 3603, by cross-matching the Mohr-Smith et al. catalogue with Gaia DR2. This provides the basis for a first comprehensive examination of the PMs of these massive stars in the halo of NGC 3603, relative to the much better studied central region. We identify up to 11 likely O star ejections - 8 of which would have been ejected between 0.60 and 0.95 Myr ago (supporting the age of ∼1 Myr that has been attributed to the bright cluster centre). Seven candidate ejections are arranged in a partial ring to the south of the cluster core spanning radii of 9-18 arcmin (18-36 pc if the cluster is 7 kpc away). We also show that the cluster has a halo of a further ∼100 O stars extending to a radius of at least 5 arcmin, adding to the picture of NGC 3603 as a scaled down version of the R136/30 Dor region.",
keywords = "astro-ph.SR, astro-ph.GA, open clusters and associations: individual: NGC 3603, stars: early-type, stars: massive, proper motions",
author = "Drew, {J. E.} and M. Mongui{\'o} and Wright, {N. J.}",
note = "{\circledC} 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society",
year = "2019",
month = "6",
day = "1",
doi = "10.1093/mnras/stz864",
language = "English",
volume = "486",
pages = "1034--1044",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - The O star hinterland of the Galactic starburst, NGC 3603

AU - Drew, J. E.

AU - Monguió, M.

AU - Wright, N. J.

N1 - © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

PY - 2019/6/1

Y1 - 2019/6/1

N2 - The very bright and compact massive young cluster, NGC 3603, has been cited as an example of a starburst in the Milky Way and compared with the much-studied R136/30 Doradus region in the Large Magellanic Cloud. Here we build on the discovery by Mohr-Smith et al. of a large number of reddened O stars around this cluster. We construct a list of 288 candidate O stars with proper motions (PMs), in a region of sky spanning 1.5 × 1.5 deg 2 centred on NGC 3603, by cross-matching the Mohr-Smith et al. catalogue with Gaia DR2. This provides the basis for a first comprehensive examination of the PMs of these massive stars in the halo of NGC 3603, relative to the much better studied central region. We identify up to 11 likely O star ejections - 8 of which would have been ejected between 0.60 and 0.95 Myr ago (supporting the age of ∼1 Myr that has been attributed to the bright cluster centre). Seven candidate ejections are arranged in a partial ring to the south of the cluster core spanning radii of 9-18 arcmin (18-36 pc if the cluster is 7 kpc away). We also show that the cluster has a halo of a further ∼100 O stars extending to a radius of at least 5 arcmin, adding to the picture of NGC 3603 as a scaled down version of the R136/30 Dor region.

AB - The very bright and compact massive young cluster, NGC 3603, has been cited as an example of a starburst in the Milky Way and compared with the much-studied R136/30 Doradus region in the Large Magellanic Cloud. Here we build on the discovery by Mohr-Smith et al. of a large number of reddened O stars around this cluster. We construct a list of 288 candidate O stars with proper motions (PMs), in a region of sky spanning 1.5 × 1.5 deg 2 centred on NGC 3603, by cross-matching the Mohr-Smith et al. catalogue with Gaia DR2. This provides the basis for a first comprehensive examination of the PMs of these massive stars in the halo of NGC 3603, relative to the much better studied central region. We identify up to 11 likely O star ejections - 8 of which would have been ejected between 0.60 and 0.95 Myr ago (supporting the age of ∼1 Myr that has been attributed to the bright cluster centre). Seven candidate ejections are arranged in a partial ring to the south of the cluster core spanning radii of 9-18 arcmin (18-36 pc if the cluster is 7 kpc away). We also show that the cluster has a halo of a further ∼100 O stars extending to a radius of at least 5 arcmin, adding to the picture of NGC 3603 as a scaled down version of the R136/30 Dor region.

KW - astro-ph.SR

KW - astro-ph.GA

KW - open clusters and associations: individual: NGC 3603

KW - stars: early-type

KW - stars: massive

KW - proper motions

UR - http://www.scopus.com/inward/record.url?scp=85071253441&partnerID=8YFLogxK

U2 - 10.1093/mnras/stz864

DO - 10.1093/mnras/stz864

M3 - Article

VL - 486

SP - 1034

EP - 1044

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -