SIMBAD references

1999AJ....117.2617O - Astron. J., 117, 2617-2625 (1999/June-0)

Redshifts of galaxies around Arp 220 and serendipitous discovery of three star-forming dwarf galaxies at redshift z∼0.5.


Abstract (from CDS):

We present redshift measurements of four faint galaxies around the archetypal ultraluminous infrared galaxy Arp 220. These galaxies have significantly higher redshifts (z∼0.036-0.091) than that of Arp 220 (z≃0.018). Therefore, we conclude that they are background objects not physically related to Arp 220. Three of these faint galaxies located to the south of Arp 220 are a group of galaxies (or the brightest members in a cluster of galaxies) at z≃0.09, as has been suggested previously on the basis of their associated soft X-ray emission.

We also report the serendipitous discovery of three additional galaxies at redshift z∼0.5, found along one of the slit positions. All three galaxies exhibit an [O II] λ3727 emission line. The spectrum of the brightest galaxy (mR≃24.4) shows other strong emission lines: Mg II λ2798, Hβ, [O III] λ4959, and[O III] λ5007. The emission-line properties of these galaxies as well as their intrinsically low luminosities (MR≥-18.4) indicate that they are star-forming dwarf galaxies.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: General - Galaxies: Distances and Redshifts - Galaxies: Individual: Name: Arp 220

Nomenclature: Table 2: [OTH99] Galaxy A (Nos A-D). Table 4: [OTH99] Galaxy R (Nos I-III).

CDS comments: misprint pour RA de [OTH99] Galaxy D. (correct = 15h35m04.8)

Simbad objects: 14

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