Vega vs Östersund

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Vega is the brightest star in the northern constellation of Lyra. It has the Bayer designation α Lyrae, which is Latinised to Alpha Lyrae and abbreviated Alpha Lyr or α Lyr. This star is relatively close at only 25 light-years from the Sun, and, together with Arcturus and Sirius, one of the most luminous stars in the Sun's neighborhood. It is the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus. Vega has been extensively studied by astronomers, leading it to be termed "arguably the next most important star in the sky after the Sun". Vega was the northern pole star around 12,000 BC and will be so again around the year 13,727, when its declination will be +86° 14′. Vega was the first star other than the Sun to be photographed and the first to have its spectrum recorded. It was one of the first stars whose distance was estimated through parallax measurements. Vega has functioned as the baseline for calibrating the photometric brightness scale and was one of the stars used to define the zero point for the UBV photometric system.

Vega is only about a tenth of the age of the Sun, but since it is 2.1 times as massive, its expected lifetime is also one tenth of that of the Sun; both stars are at present approaching the midpoint of their life expectancies. Vega has an unusually low abundance of the elements with a higher atomic number than that of helium. Vega is also a variable star that varies slightly in brightness. It is rotating rapidly with a velocity of 236 km/s at the equator. This causes the equator to bulge outward due to centrifugal effects, and, as a result, there is a variation of temperature across the star's photosphere that reaches a maximum at the poles. From Earth, Vega is observed from the direction of one of these poles.Based on an observed excess emission of infrared radiation, Vega appears to have a circumstellar disk of dust. This dust is likely to be the result of collisions between objects in an orbiting debris disk, which is analogous to the Kuiper belt in the Solar System. Stars that display an infrared excess due to dust emission are termed Vega-like stars.

Source: Wikipedia

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Östersund (pronounced [œstɛˈʂɵnːd] (listen); Southern Sami: Staare) is an urban area (city) in Jämtland in the middle of Sweden. It is the seat of Östersund Municipality and the capital of Jämtland County. Östersund is located at the shores of Sweden's fifth largest lake, Storsjön, opposite the island Frösön, and is the only city in Jämtland. Östersund is the region's cultural and economical centre and by tradition a city of trade and commerce. Östersund had one of the most extensive garrisons in Sweden prior to its closure in the early-21st century. The city is the Mid Sweden University's largest campus site with approximately 7,000 students. With a total population of 50,960 (2017) Östersund is the 22nd most populous city in Sweden, the 46th most populous city in Scandinavia, and by far the largest inland city in Northern Sweden. The city was the only Swedish city founded and chartered in the 18th century. Östersund was founded in order to create a trade monopoly over Jämtland whose inhabitants' lucrative trade annoyed the Swedish crown. The intention was to persuade the local farmers to deliver merchandise to middlemen in Östersund, but the population opposed this economic philosophy, and Östersund long remained small. It took until the end of the 19th century for Östersund to truly become a city, after the arrival of the railroad and the economic liberalization of that time.

Östersund is situated in inland Scandinavia and connected to Sundsvall in the east on the Swedish coast, and Trondheim in the west at the shores of the Norwegian Sea. Östersund is located in the middle of Scandinavia, in the middle of Sweden, in the middle of Jämtland County and in the middle of Östersund Municipality. As the most centrally located city in Sweden, the city credits itself as the centre of Sweden.Östersund is marketed as Vinterstaden – Winter City. Winter City as a project is run by the Municipality together with city enterprises. Östersund has had a long history as a centre of outdoor activities with a modern cross-country ski stadium and an actual piste in the city itself. Östersund has also hosted several World Championships in various sports such as biathlon, speed skating and ski orienteering along with Swedish National Championships in cross country skiing and snocross. The city has been the applicant city of Sweden for several Winter Olympic Games, but has yet to host one. The precursor to the Winter Olympic Games, the Nordic Games, were however held at several occasions in the city, due to lack of snow in Stockholm.

Source: Wikipedia