Subarcsecond Resolution Mid-Infrared Observations of Super Star Clusters in the Antennae (NGC 4038/4039) | Zendy

Ludo Snijders | Zendy; P. van der Werf | Zendy; Bernhard R. Brandl | Zendy; S. Mengel | Zendy; D. Schaerer | Zendy; Z. Wang | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Subarcsecond Resolution Mid-Infrared Observations of Super Star Clusters in the Antennae (NGC 4038/4039)

Author(s) -

Ludo Snijders,

P. van der Werf,

Bernhard R. Brandl,

S. Mengel,

D. Schaerer,

Z. Wang

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/507424

Subject(s) - physics , astrophysics , infrared , star formation , astronomy , spitzer space telescope , radius , star cluster , galaxy , space observatory , mid infrared , telescope , optics , laser , computer security , computer science

In this letter we present ground-based subarcsecond mid-infrared imaging andspectroscopy of young super star clusters in the overlap region of the merginggalaxies NGC4038/4039 (the Antennae) obtained with the VLT Imager andSpectrometer for mid-Infrared (VISIR). With its unprecedented spatialresolution VISIR begins to resolve the HII/PDR complexes around thestar-forming regions for the first time. In the N-band spectra of two youngstar clusters unexpectedly low polycyclic aromatic hydrocarbon (PAH) emissionis observed, compared to what is seen with the Infrared Space Observatory (ISO)and with the Spitzer Space Telescope. We conclude that a large fraction of thePAH emission cannot directly be associated with the super star clusters, butoriginate from an extended region of at least 215 pc radius around theclusters. In the distribution of [NeII] 12.81 micron emission a highly obscuredcluster is discovered that does not have an optical or near-infraredcounterpart.Comment: 4 pages, 4 figures, accepted for publication in ApJ

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research