Star formation in the Magellanic Clouds - III. IR observations of giant H II regions

Jones, T. J.; Hyland, A. R.; Straw, Steven M.; Harvey, P. M.; Wilking, B. A.; Joy, M.; Gatley, I.; Thomas, J. A.

doi:10.1093/mnras/219.3.603

Cited by 28 publications

(40 citation statements)

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“…4 the spectra of a few evolved and unevolved OB stars are plotted in the range of λλ4000 to 4800Å. The star 5−31 (W19) coincides with the location of the NIR 1 source (Jones et al 1986). Its optical spectrum shows a narrow NIV λ4058Å emission feature and NV λλ4604,4620Å absorption lines (Fig.…”

Section: Spectral Classificationmentioning

confidence: 99%

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The OB associations LH 101 and LH 104 in the HII region N158 of the LMC

Testor

Niemelä

1998

Astron. Astrophys. Suppl. Ser.

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Abstract. We present photometric and spectroscopic observations of stars in the Large Magellanic Cloud OB associations LH 101 and LH 104, located in the HII region N158, which we have also imaged. From our observations we have constructed upper H−R diagrams for these OB associations, which we find to consist mainly of three populations, one of 2 − 6 Myr for the stars inside the northern bubble (LH 104), and two populations in the southern HII region (LH 101), one of ≤ 2 Myr and the other one aged 3 − 6 Myr. We have obtained for LH 101 a normal IMF, with a slope of Γ = −1.29 ± 0.20 whereas for LH 104 the IMF is flatter with a slope of Γ = −1.05 ± 0.12. These IMF slopes are consistent with that of other OB associations in the LMC. Our observations reveal in the region of LH 101 the presence of both unevolved and evolved very massive stars, whose ionizing flux is in excess of that derived from our Hβ images of the HII region. The northwest nebulosity in the region of LH 101 thus appears to be matter bound.

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Section: Spectral Classificationmentioning

confidence: 99%

“…Jones et al (1986) detected two infrared sources in LH 101: NIR 1 and NIR 2. NIR 1 has colours typical of a reddened O star of luminosity ∼ 2 10 6 L…”

Section: Introductionmentioning

confidence: 99%

The OB associations LH 101 and LH 104 in the HII region N158 of the LMC

Testor

Niemelä

1998

Astron. Astrophys. Suppl. Ser.

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“…associated with the most important concentration of molecular gas in the LMC (Jones et al 1986;Brooks & Whiteoak 1997;Johansson et al 1998). The molecular emission is in fact due to three distinct giant molecular clouds, known as N159-East, N159-West, and N159-South.…”

Section: Introductionmentioning

confidence: 99%

Stellar populations associated with the LMC Papillon Nebula

Meynadier¹,

Heydari-Malayeri²,

Deharveng³

et al. 2004

A&A

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Abstract. We study the Large Magellanic Cloud Papillon Nebula (N 159-5), a conspicuous High Excitation Blob (HEB) lying in the star forming complex N 159. Using JHK near-infrared photometry obtained at the ESO VLT with the ISAAC camera, we examine the stellar populations associated with the Papillon, tracing their history using stellar evolution models. Two populations are revealed: one composed of young, massive stars with an age ∼3 Myr, and a second consisting of older lower mass stars of age spreading between 1 and 10 Gyr. We analyze the properties of those populations and discuss their significance in the context of N 159. We also estimate that if the star at the center of the Papillon is single its initial mass is ∼50 M and it is affected by an extinction A V ∼ 7 mag.

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“…This observation would make P2 the first extragalactic protostar to have been discovered by Jones et al (1986).…”

Section: Color-color Diagrammentioning

confidence: 87%

Massive Star Formation in the Lmc. I. N159 and N160 Complexes

Gordon

Jones

Gehrz

et al. 2017

ApJ

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We present images and spectral energy distributions (SEDs) of massive young stellar objects (YSOs) in three star-forming H II regions of the Large Magellanic Cloud: N159A, N159 Papillon, and N160. We use photometry from SOFIA/FORCAST at 25.3-37.1 µm to constrain model fits to the SEDs and determine luminosities, ages, and dust content of the embedded YSOs and their local environments. By placing these sources on mid-infrared color-magnitude and color-color diagrams, we analyze their dust properties and consider their evolutionary status. Since each object in the FOR-CAST images has an obvious bright near-infrared counterpart in Spitzer Space Telescope images, we do not find any evidence for new, very cool, previously-undiscovered Class 0 YSOs. Additionally, based on its mid-infrared colors and model parameters, N159A is younger than N160 and the Papillon. The nature of the first extragalactic protostars in N159, P1 and P2, is also discussed.

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Star formation in the Magellanic Clouds - III. IR observations of giant H II regions

Cited by 28 publications

References 0 publications

The OB associations LH 101 and LH 104 in the HII region N158 of the LMC

The OB associations LH 101 and LH 104 in the HII region N158 of the LMC

Stellar populations associated with the LMC Papillon Nebula

Massive Star Formation in the Lmc. I. N159 and N160 Complexes

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