Evidence for a Young Stellar Population in NGC 5018
نویسندگان
چکیده
منابع مشابه
The Quest for the Dominant Stellar Population in the Giant Elliptical NGC 5018
NGC 5018, a relatively near, giant E3 galaxy, deserved quite a large attention in the past. Evidence of past interaction with other systems comes mainly from the extended pattern of dust lanes/patches clearly recognizable from ground-based observations. What is more, this object captures immediately the attention of the observer for (i) its anomalous location on the Mg2-luminosity relation of S...
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Agency ABSTRACT We present HST NICMOS photometry of the resolved stellar population in the dwarf irregular galaxy NGC 1569. The color-magnitude diagram (CMD) in the F110W and F160W photometric bands contains ∼2400 stars with a formal photometric error ∼ < 0.1 mag down to m F110W ≈ 23.5 and m F160W ≈ 22.5. The fiducial photometry has a completeness factor higher than 50% down to m F110W ≈ 21.5 a...
متن کاملThe globular cluster system of an “ old ” merger : NGC 5018 ⋆
We study the properties of the globular cluster system of the “old” merger NGC 5018. We detect a relatively poor globular cluster system, that can be divided into at least two populations based on colors: a small population of blue clusters, aged between several hundred Myr to 6 Gyr, the formation of which was probably induced by the last interaction in the galaxy group; and one (possibly two) ...
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We have obtained V and I-band photometry for about 17500 stars in the field of the dwarf irregular galaxy NGC 3109, located in the outskirts of the Local Group. The photometry allows us to study the stellar populations present inside and outside the disk of this galaxy. From the VI color-magnitude diagram we infer metallicities and ages for the stellar populations in the main body and in the ha...
متن کاملIs the Giant Elliptical Galaxy NGC 5018 a Post - Merger Remnant ?
NGC 5018, one of the weakest UV emitters among giant ellipticals (gE) observed with IUE, appears to consist of an optical stellar population very similar to that of the compact, dwarf elliptical M32, which is several magnitudes fainter in luminosity than NGC 5018 and whose stellar population is know to be ∼ 3 Gyr old. Here we show that the mid-UV spectra of these two galaxies are also very simi...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2000
ISSN: 0004-637X,1538-4357
DOI: 10.1086/308764