A photometric and spectroscopic study
of the association LH 47 in
 the superbubble N 44 in the LMC

Will, J. M.; Bomans, D. J.; Dieball, A.

doi:10.1051/aas:1997169

Cited by 19 publications

(15 citation statements)

References 33 publications

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“…4.1, Paper I). This range (−1.6 < ∼ Γ < ∼ −1.0) is in excellent agreement with the established IMF slopes of LH associations by several detailed studies of their stellar content (LH 117/118: Massey et al 1989;30 Dor area: Parker & Garmany 1993;LH 58: Garmany et al 1994;LH 47/48: Oey & Massey 1995;Will et al 1997; LH 1/2/5/8: Parker et al 2001). These slopes were found to be comparable to each other, and clustered around Γ −1.5.…”

Section: If We Select Fromsupporting

confidence: 88%

OB stellar associations in the Large Magellanic Cloud: Survey of young stellar systems

Gouliermis

Kontizas

et al. 2003

A&A

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Abstract. The method developed by Gouliermis et al. (2000, Paper I), for the detection and classification of stellar systems in the LMC, was used for the identification of stellar associations and open clusters in the central area of the LMC. This method was applied on the stellar catalog produced from a scanned 1.2 m UK Schmidt Telescope Plate in U with a field of view almost 6.• 5 × 6.• 5, centered on the Bar of this galaxy. The survey of the identified systems is presented here followed by the results of the investigation on their spatial distribution and their structural parameters, as were estimated according to our proposed methodology in Paper I. The detected open clusters and stellar associations show to form large filamentary structures, which are often connected with the loci of HI shells. The derived mean size of the stellar associations in this survey was found to agree with the average size found previously by other authors, for stellar associations in different galaxies. This common size of about 80 pc might represent a universal scale for the star formation process, whereas the parameter correlations of the detected loose systems support the distinction between open clusters and stellar associations.

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Section: If We Select Fromsupporting

confidence: 88%

OB stellar associations in the Large Magellanic Cloud: Survey of young stellar systems

Gouliermis

Kontizas

et al. 2003

A&A

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“…These values are in good agreement with estimations of the reddening toward other young stellar systems in the LMC and in the general region of LMC 4 (e.g. Laval et al 1986;Will et al 1997;Olsen et al 1997).…”

supporting

confidence: 90%

Three stellar associations and their field east of LMC 4 in the Large Magellanic Cloud

Gouliermis

Keller

Boer

et al. 2002

A&A

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Abstract. We present BVR photometry in an area of 20. 5 × 20. 5 centered on LH 95 situated to the north-east of the super-bubble LMC 4. We investigate the stellar content of three stellar associations (LH 91, and their surrounding fields. Our observations use the R−Hα colour index to identify the Be star population of the region. We find that Be stars exist in all three of the investigated associations. Within LH 95 we find a central cluster of four Be stars which strongly determine the Hii emissivity in this area. We estimated the reddening and the age of the systems based on isochrone fitting. The reddening was found to vary between E(B − V ) 0.15 and 0.20 mag. All systems were found to be younger than 10 Myr, while the field is older than ∼50 Myr. We also present the luminosity and mass functions of the systems, as well as that of the field. It was found that the luminosity function slope s of the field is steeper than that of the systems, which were found to be s 0.12-0.32. The MF slopes were estimated for both systems and field by directly counting stars between evolutionary tracks. We verify that the MF slopes of the systems are rather shallower than the ones of the field. The MF slopes of the systems lie in the range −1.0 < Γ < −2.0, while those of various fields are significantly steeper, around Γ −4.0. LH 95 was found to be probably under disruption. We discuss the possibility that this association is in the process of dissipation.

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“…6, which encircles the LH 47 cluster of massive, ionizing stars (Stasińska et al 1986;Meaburn & Laspias 1991). Will et al (1997) estimate the age of LH 47 at 5−6 Myr, based on a combination of photometry and spectroscopy. Oey & Massey (1995) note two populations, one > ∼ 10 Myr inside Shell 1 and one outside, resulting from a burst of star formation in the last ∼5 Myr.…”

Section: N44mentioning

confidence: 99%

Identifying young stellar objects in nine Large Magellanic Cloud star-forming regions

Carlson

Sewiło

Meixner

et al. 2012

A&A

110

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We introduce a new set of selection criteria for the identification of infrared bright young stellar object (YSO) candidates and apply them to nine Hii regions in the Large Magellanic Cloud (LMC), focusing particularly on lower mass candidates missed by most surveys. Data are from the Spitzer Space Telescope legacy program SAGE (Surveying the Agents of Galaxy Evolution; Meixner et al. 2006, AJ, 132, 2268, combined with optical photometry from the Magellanic Clouds Photometric Survey (MCPS; Zaritsky et al. 1997, AJ, 114, 1002 and near-infrared photometry from the InfraRed Survey Facility (IRSF; Kato et al. 2007, PASJ, 59, 615). We choose regions of diverse physical size, star formation rates (SFRs), and ages. We also cover a wide range of locations and surrounding environments in the LMC. These active star-forming regions are LHA 120-N 11, N 44, N 51, N 105, N 113, N 120, N 144, N 160, and N 206. Some have been well-studied (e.g., N11, N44, N160) in the past, while others (e.g., N51, N144) have received little attention. We identify 1045 YSO candidates, including 918 never before identified and 127 matching previous candidate lists. We characterize the evolutionary stage and physical properties of each candidate using the spectral energy distribution (SED) fitter of Robitaille et al. (2007, ApJS, 169, 328) and estimate mass functions and SFRs for each region.

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A photometric and spectroscopic study of the association LH 47 in the superbubble N 44 in the LMC

Cited by 19 publications

References 33 publications

OB stellar associations in the Large Magellanic Cloud: Survey of young stellar systems

OB stellar associations in the Large Magellanic Cloud: Survey of young stellar systems

Three stellar associations and their field east of LMC 4 in the Large Magellanic Cloud

Identifying young stellar objects in nine Large Magellanic Cloud star-forming regions

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