We present new observations of the major star-forming region N66 in the Small Magellanic Cloud and of its surroundings, which add to those presented in Contursi et al. (2000, Paper I). High-sensitivity CO observations allowed the detection of molecular gas associated with the H II region, for which a high-resolution image in [O III] lambda 5007 is presented. We also present images in the v(1-0) S(1) line of H-2 at 2.12 mu m and in the adjacent continuum. This material reveals an interesting photodissociation region. We show that the molecular gas that has not yet been photodissociated by the UV radiation of the stars is in hot, dense clumps with a very small surface filling factor. We discovered several embedded stars or stellar associations, and suggest that three successive stellar generations have already taken place in less than 3 million years.

Multiwavelength observations of N 66 in the SMC: unveiling photodissociation interfaces and star formation / M., Rubio; A., Contursi; J., Lequeux; R., Probst; R., Barba; F., Boulanger; D., Cesarsky; Maoli, Roberto. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 359:(2000), pp. 1139-1146.

Multiwavelength observations of N 66 in the SMC: unveiling photodissociation interfaces and star formation

MAOLI, Roberto
2000

Abstract

We present new observations of the major star-forming region N66 in the Small Magellanic Cloud and of its surroundings, which add to those presented in Contursi et al. (2000, Paper I). High-sensitivity CO observations allowed the detection of molecular gas associated with the H II region, for which a high-resolution image in [O III] lambda 5007 is presented. We also present images in the v(1-0) S(1) line of H-2 at 2.12 mu m and in the adjacent continuum. This material reveals an interesting photodissociation region. We show that the molecular gas that has not yet been photodissociated by the UV radiation of the stars is in hot, dense clumps with a very small surface filling factor. We discovered several embedded stars or stellar associations, and suggest that three successive stellar generations have already taken place in less than 3 million years.
2000
galaxies; galaxies : magellanic clouds; hii regions; infrared : ism : continuum; infrared : ism : lines and bands; ism; ism : dust; extinction; ism : hii regions; ism : individual objects; n 66(smc)
01 Pubblicazione su rivista::01a Articolo in rivista
Multiwavelength observations of N 66 in the SMC: unveiling photodissociation interfaces and star formation / M., Rubio; A., Contursi; J., Lequeux; R., Probst; R., Barba; F., Boulanger; D., Cesarsky; Maoli, Roberto. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 359:(2000), pp. 1139-1146.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/106800
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