SIMBAD references

1997A&A...328..483K - Astronomy and Astrophysics, volume 328, 483-492 (1997/12-2)

Imaging the nuclear environment of NGC 1365 with the Hubble Space Telescope.


Abstract (from CDS):

The region surrounding the active nucleus of the barred spiral galaxy NGC 1365 is observed in the [OIII]λ5007 line and neighbouring continuum using the Faint Object Camera (FOC) aboard the Hubble Space Telescope (HST). In the continuum light numerous bright ``super star clusters'' (SSCs) are seen in the nuclear region. They tend to fall on an elongated ring around the nucleus and contribute about 20% of the total continuum flux in this wavelength regime. Without applying any extinction correction the brightest SSCs have an absolute luminosity MB=-14.1mag±0.3mag and are very compact with radii R≲3pc. Complementary ground-based spectroscopy gives an extinction estimate AB=2.5mag±0.5mag towards these regions, indicating a true luminosity MB=-16.6mag±0.6mag. The bright compact radio source NGC 1365:A is found to coincide spatially with one of the SSCs. We conclude that it is a ``radio supernova''. The HST observations resolve the inner structure of the conical outflow previously seen in the [OIII]λ5007 line in ground-based observations, and reveal a complicated structure of individual emission-line clouds, some of which gather in larger agglomerations. The total luminosity in the [OIII] line amounts to L[OIII]≃3.7x1040erg/s where about 40% is emitted by the clouds.

Abstract Copyright:

Journal keyword(s): stars: supernovae: general - galaxies: individual: NGC 1365 - galaxies: nuclei - galaxies: Seyfert - galaxies: star clusters

Nomenclature: Table 4: [KJL97] NN (Nos 1-42)

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

CDS comments: 'LNN' = [AEL81] LNN. 'NGC 1365:A' = [SJL82] A

Simbad objects: 20

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