![]() Observations of material orbiting Sagittarius A* at the centre of the Milky Way suggest that a 3 million solar mass black hole resides there. There is also strong evidence that the bulges of large galaxies harbour supermassive black holes at their centres. I was just out walking my dog and it is what it is, the. Bulge stars are generally more metal-rich and have a wider range of metallicities than stars in the metal-poor halo. When Greg Norman posted photos of his beach walk in November, he didn’t realize a bulging detail would become a viral sensation. In galaxies other than the Milky Way, there is similar evidence that intermediate age and young stars exist in the predominantly old bulges.Īlthough the majority of bulge stars have ages similar to stars in the stellar halo, there is a large difference between the metallicities of the two populations. This is commonly considered as evidence for secular evolution within the bulge, but may also indicate the effects of minor mergers. Indeed, some of the largest young star clusters in the Milky Way (the Arches, Quintuplet, and Central clusters) are located at the Galactic centre. Although the bulge is dominated by stars older than 7 billion years, intermediate age (~1-5 billion years) and young (less than 500 million years) population I stars are also present. Recent observations have revealed the presence of young, massive stars in the bulge, a sure indicator of recent star formation. However, space-based infrared cameras, which are able to see beyond the dust that obscures our view toward the centre of the Galaxy, have shown us that this is not entirely correct. The Arches cluster (left) and Quintuplet cluster (right), two of the largest stellar clusters in the Milky Way, are located in the Galactic bulge at less than 100 light years from the Galactic Centre. The high number of RR Lyrae stars in the bulge, and the lack of young, blue stars in the colour-magnitude diagram for Baade’s window, both pointed to an old stellar population. Until recently, stars in the bulge our own Galaxy were all thought to be old, population II stars. ![]() The ages of bulge stars is a topic currently under investigation. Within the bulge, stars orbit in a completely random fashion meaning that the bulge is velocity dispersion supported rather than rotation supported. The bulge of the Milky Way appears to be fairly typical – a slightly flattened sphere of radius ~6,500 light years – while bulge sizes in other galaxies vary from several hundred to several tens of thousands of light years, depending on the type and size of the galaxy. The term ‘bulge’ is used to describe the dense spheroidal swarm of stars often found in the centres of spiral and S0 galaxies. The enormous bulge of this galaxy extends almost as far as the disk. ![]() While you spend the next hour ogling that photo of Justin playing soccer, check out these pics of celebrities, including Justin, who got a tattoo of their significant other.The Sa galaxy M104 (The Sombrero). If Justin is indeed invited to Thanksgiving, he’s certainly going to have to make amends with Selena’s family - but as long as Selena is on his side, he should be fine. Not only that, but Selena is reportedly happier with Justin right now than she was with The Weeknd, 27. We reported earlier how Selena wants Justin to repair his image in her family’s eye in order to prove to them all how much he’s matured since they first dated. Needless to say, the only person who might enjoy these shirtless pics more than Justin’s fans is none other than Selena Gomez, 25. 'It's The Only Thing That Saved My Hair': Check Out The Vitamin That Beats Traditional Biotin SupplementsĪs they say, a picture is worth a thousand words… and about the same amount of thirsty tweets. Jana Kramer Believes Her 'Asparagus Pee' Turned Off Chris Evans On A Date 'Bachelor In Paradise': Justin Rejects Eliza After She Leaves The Beach To Try & Win Him Back ![]() ![]() Search Hollywood Life Search Trending Navigation Trending Latest Hollywood Celebrity & Entertainment News Primary Menu Menu Close Menu ![]()
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