Here we use the high supernova rate of the galaxy to derive the star-formation rate and predict the galaxy's FUV flux.
NGC 6946 (also known as the Fireworks Galaxy or Caldwell 12) is a face-on intermediate spiral galaxy with a small bright nucleus, whose location in the sky straddles the boundary between the northern constellations of Cepheus and Cygnus.Its distance from Earth is about 25.2 million light-years or 7.72 megaparsecs, similar to the distance of M101 (NGC 5457) in the constellation Ursa Major. Astronomers using NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) have found a remarkable source of X-rays in NGC 6946, a spiral galaxy located at a distance of about 25 million light-years. NGC 6946 lies within the Virgo Supercluster. NGC 6946 is a rather nearby spiral galaxy, which at one time was suspected to be an outlying member of the Local Group (Hubble 1936).
Comments may be merged or altered slightly such as if an email address is given in the main body of the comment.You can decline to give a name which if that is the case, the comment will be attributed to a random star. However, as a Seyfert galaxy (type Sy 2), it does have a bright core. This supernova has a large distance to the nucleus of its host galaxy, the nice spiral NGC 6946. This potential black hole-forming star is designated In May 2017, supernova SN 2017eaw was first observed to be 12.8 magnitude in the northwest region of the galaxy and light curves obtained over the next 600 days showed that it was a When the value is negative then the deep space object and the Sun are getting closer to one another, likewise, a positive number means that the two objects are moving away.It gets its name, Fireworks Galaxy because of the number of The time it will take to travel to this star is dependent on how fast you are going. NGC 6946, also known as the Fireworks Galaxy, is a 9th magnitude face-on spiral galaxy positioned on the border between Cepheus and Cygnus. The sky was clear but with almost full moon.
All contributions are most welcome.NGC 6946, also known as the Fireworks Galaxy, is a 9th NGC 6946 was discovered by William Herschel on September 9, 1798. The Right Ascension is the angular distance of an object along the celestial equator from the March Equinox.
In the Local Sheet frame, we find a peculiar velocity of v p e c = − 229 ± 29 km/s. Extra-planar gas is a phenomenon peculiar to several other galaxies, including NGC 2403 and NGC 891, two galaxies with high rates of star formation. Physical Information: NGC 6946 is a spectacular galaxy, but relatively faint for its large size, because it lies nearly in the plane of the Milky Way, and is considerably obscured and reddened by the dust in the plane of our galaxy. The sky was clear with some cirrostratus. As rough guide, the location is located in the constellation of Pisces. Up to now I took eight spectra: 2017-05-21 in the early morning hours. The sky was clear with a very good transparence. Also noticeable are a number of foreground stars superimposed on the galaxy. NGC: 6946: Caldwell: 12: Object Type: Spiral Galaxy: Classification: SAB(rs)cd: Constellation: Cepheus / Cygnus: Distance (light-years) 22.5 Million: Apparent Mag. It's best seen from northern locations during the months of October, November and December. NGC 6946 is number 12 in the Caldwell catalogue and number 29 in the Arp Atlas of Peculiar Galaxies. NGC 6946 is sometimes called the Fireworks Galaxy because of the number of supernovae that have been discovered there and the galaxy's prodigious rate of star formation.
An 80mm (3.1-inch) refractor displays a bright core surrounded by a faint haze. The Declination is the angle of the object from the celestial equator. Bemerkungen: Unten befindet sich eine 120%-Version des interessanten Teils … NGC6946 - Optics issue, need diagnose assistance - posted in CCD/CMOS Astro Camera Imaging & Processing: Hello everyone, I have a 8 F3.9 Newt and am having an issue that i cant seem to solve. Recent distance estimates using the tip of the red giant branch of 7.7 to 7.8 Mpc are larger than the distance commonly assumed for studying supernovae in this galaxy of 5.9 Mpc. The Radial Velocity, that is the speed at which the object is moving away/towards the Sun is 48 km/s . has done some calculations as to how long it will take going at differing speeds.
NGC 6946 has an unusually large halo of neutral gas that extends out of the plane of the disk, rotating at a slower velocity than the disk. A negative value indicates it is in the southern hemisphere. From latitudes greater than +30N the galaxy is The galaxy can be found at the cross point between the western part of Cepheus and the northern tip of Cygnus. The Fireworks Galaxy's location is 20 34 52.332 (R.A.) and +60 09 13.24 (Dec.). Our distance to NGC 6946 implies that the supernovae in this galaxy are on average ∼ 2.3 times more luminous than previous estimates. If the number is negative, it is "west" of the March Equinox.