SIMBAD references

2004AJ....127.1460D - Astron. J., 127, 1460-1471 (2004/March-0)

Stars, star clusters, and dust in NGC 3077.


Abstract (from CDS):

Images obtained with the CFHTIR camera on the Canada-France-Hawaii Telescope are used to investigate the near-infrared photometric properties of the star-forming M81 group galaxy NGC 3077. The spectral-energy distribution (SED) of the near-infrared light within 10" of the nucleus (1) is very different from that of ``typical'' dwarf elliptical galaxies (dE's), blue compact dwarf galaxies, and H II/starburst galaxies, and (2) is consistent with the 2 µm light being dominated by hot young (logtyr<6.8) stars reddened by AV=3-4, with AV≥8 mag in some regions, including previously detected areas of CO emission. A population like that near the center of NGC 205 likely contributes only a modest fraction of the light near 2 µm. A number of candidate star clusters are detected in and around NGC 3077. These objects have near-infrared brightnesses and colors that are consistent with them being classical globular clusters and young star clusters. The specific frequency of globular clusters in NGC 3077 is estimated to be SN=2.5, which falls within the range of SNmeasured in nearby dE's. The candidate young clusters have photometric masses that are similar to those of compact young clusters in other active star-forming systems and SEDs consistent with ages logtyr≤6.6. Based on the masses and ages of the young clusters, it is estimated that the star formation rate in NGC 3077 was at least 0.25-0.50 M/yr during the past few million years.

Abstract Copyright:

Journal keyword(s): Galaxies: Dwarf - Galaxies: Evolution - Galaxies: Individual: NGC Number: NGC 3077

Nomenclature: Table 1: [D2004] NN (Nos 1-33).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 46

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