ASSESSING THE MILKY WAY SATELLITES ASSOCIATED WITH THE SAGITTARIUS DWARF SPHEROIDAL GALAXY
نویسندگان
چکیده
منابع مشابه
The exotic chemical composition of the Sagittarius dwarf Spheroidal galaxy
Context. The Sagittarius dwarf Spheroidal Galaxy is the nearest neighbor of the Milky Way. Moving along a short period quasi-polar orbit within the Halo, it is being destroyed by the tidal interaction with our Galaxy, losing its stellar content along a huge stellar stream. Aims. We study the detailed chemical composition of 12 giant stars in the Sagittarius dwarf Spheroidal main body, together ...
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The identification of two new Planetary Nebulae in the Sagittarius Dwarf Spheroidal Galaxy (Sgr) is presented. This brings the total number to four. Both new PNe were previously classified as Galactic objects. The first, StWr 2-21, belongs to the main body of Sgr, from its velocity and location. The second, the halo PN BoBn 1, has a location, distance and velocity in agreement with the leading ...
متن کاملAssociated with the Sculptor Dwarf Spheroidal Galaxy
Neutral hydrogen (H I ) has been detected in the Local Group dwarf spheroidal galaxy Sculptor with the 64 m Parkes single dish and mapped with the Australia Telescope synthesis array. Most of the detected H I is in two clouds ∼ 15 − 20 away from the optical center. The gas is observed at the same systemic velocity than the stars but at ≥ 125 km s away from the Magellanic Stream components in th...
متن کاملHI observations towards the Sagittarius dwarf spheroidal galaxy
We have measured the λ21 cm line of Galactic H i over more than 50 square degrees in the direction of the Sagittarius dwarf spheroidal galaxy. The data show no evidence of H i associated with the dwarf spheroidal which might be consider analogous to the Magellanic Stream as it is associated in both position and velocity with the Large Magellanic Cloud. Nor do the H i data show evidence for any ...
متن کاملEvidence for coupling between the Sagittarius dwarf galaxy and the Milky Way warp
Using recent determinations of the mass and orbit of Sagittarius, I calculate its orbital angular momentum. From the latest observational data, I also calculate the angular momentum of the Milky Way’s warp. I find that both angular momenta are directed toward l ≈ 270, b = 0, and have magnitude 2–8× 10 M⊙ kpc km s , where the range in both cases reflects uncertainty in the mass. The coincidence ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2010
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/718/2/1128