# What is the age of the star cluster m67?

Age estimates for the cluster range between 3.2 and 5 billion years, with the most recent estimate (4 Gyr) implying stars in M67 are younger than the Sun.

Besides, how do we determine the age of a star?

As stars grow older, their luminosity increases at an appreciable rate. Given the mass of the star, one can use this rate of increase in luminosity in order to determine the age of the star. As the star spends only about 1% of its total lifetime as a red giant, this is an accurate method of determining age.

How old is the Pleiades star cluster?

The cluster contains hundreds of stars, of which only a handful are commonly visible to the unaided eye. The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years) away.

What is the turn off point for a star cluster?

The turnoff point for a star refers to the point on the Hertzsprung-Russell diagram where it leaves the main sequence after the exhaustion of its main fuel. Sun-like stars will enter the red giant branch as subgiants. By plotting the turnoff point of the stars in star clusters, one can estimate the cluster’s age.

## What is the turn off point for a star cluster?

The turnoff point for a star refers to the point on the Hertzsprung-Russell diagram where it leaves the main sequence after the exhaustion of its main fuel. Sun-like stars will enter the red giant branch as subgiants. By plotting the turnoff point of the stars in star clusters, one can estimate the cluster’s age.

## How old is the Pleiades star cluster?

The cluster contains hundreds of stars, of which only a handful are commonly visible to the unaided eye. The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years) away.

## Which constellation can you find m44 or the Beehive Cluster in?

The Beehive Cluster (also known as Praesepe (Latin for “manger”), M44, NGC 2632, or Cr 189), is an open cluster in the constellation Cancer. It is one of the nearest open clusters to Earth, containing a larger population of stars than other nearby bright open clusters.

## What temperature is needed to fuse helium into carbon?

When the temperature in the core reaches about 100 million degrees, the helium will begin to fuse into carbon by a reaction known as the triple-alpha process, because it converts three helium nuclei into one carbon atom.

## What is unusual about globular clusters?

A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers.

## Which constellation holds the brightest star in the north sky?

Polaris is located in the constellation of Ursa Minor, the Little Bear. It sometimes also goes by the name “Stella Polaris.” The seven stars from which we derive a bear are also known as the Little Dipper. Polaris, the North Star, lies at the end of the handle of the Little Dipper, whose stars are rather faint.

## Which is the brightest star in the Canis Major constellation?

Canis Major contains Sirius, the brightest star in the night sky, known as the “dog star”. It is bright because of its proximity to the Solar System. In contrast, the other bright stars of the constellation are stars of great distance and high luminosity.

## Is the North Star and Sirius the same?

Firstly, you might expect one of the most famous stars in the night sky to be one of the brightest, but it isn’t; not by a long shot. That honor belongs to Sirius and many less bright stars besides. The North Star shines with a humble brightness that belies its navigational importance.

## What does Canis Major represent?

Canis Major is a constellation in the southern sky. Its name means “the greater dog” in Latin. Canis Major represents the bigger dog following Orion, the hunter in Greek mythology. The dog is often depicted pursuing a hare, represented by the constellation Lepus.

## What is the best season to see Canis Major?

Canis Major. Canis Major, the Greater Dog is visible in the Northern Hemisphere from December – March, and visible in the Southern Hemisphere between November and April. Canis Major has since ancient times been the dog of Orion.

## What is the name of the brightest star in the constellation Pegasus?

Epsilon Pegasi is the brightest star in Pegasus. It has a visual magnitude of 2.399 and is approximately 690 light years distant from the Sun. Its traditional name, Enif, comes from the Arabic word for “the nose.” The star marks Pegasus’ muzzle.

## When can you see Pegasus in the sky?

The constellation Pegasus represents the white, winged horse of Greek mythology. This beautiful figure can be seen high in the sky starting near the end of summer and continuing through autumn if you live in the Northern Hemisphere. If you are below the Equator, look for Pegasus in late winter and through spring.

## What is the brightest star in the constellation of Pegasus?

Alpheratz is the brightest star in Andromeda and also the brightest in Pegasus if you consider it part of the constellation. Also known as Beta Pegasi, Scheat is a red giant around 200 light years from Earth, it is almost 100 times larger in diameter than our sun with twice its mass.

## Where is Pegasus located in the sky?

Pegasus, a constellation in the northern sky, was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy. In the Northern Hemisphere, the constellation is high in the sky starting near the end of summer and continuing through autumn.

## What galaxy is Pegasus in?

The Pegasus Dwarf Irregular Galaxy (also known as Peg DIG or the Pegasus Dwarf) is a dwarf irregular galaxy in the direction of the constellation Pegasus. It was discovered by A. G. Wilson in the 1950s. The Pegasus Dwarf is a companion of the Andromeda Galaxy in the Local Group.

## How do you find Pegasus in the sky?

Steps to find the Great Square of Pegasus:

• Use the Big Dipper to star-hop to Polaris, the North Star.
• Then, by drawing an imaginary line from any Big Dipper handle star through Polaris, and doubling the distance, you’ll land on the W or M-shaped constellation Cassiopeia.
• ## Is there really a Pegasus galaxy?

Pegasus Dwarf Irregular Galaxy, or Peg DIG, a member of the Local Group of galaxies. Pegasus Dwarf Spheroidal Galaxy, or Pegasus II, a member of the Local Group of galaxies, a satellite of the Andromeda Galaxy. Pegasus Galaxy (Stargate), a location in the science-fiction TV series Stargate Atlantis.

## What month can you see the constellation Pegasus?

Best visible at 21:00 (9 p.m.) during the month of October. Pegasus is a constellation in the northern sky, named after the winged horse Pegasus in Greek mythology.

## Where does the Pegasus live?

There are many stories of Pegasus carrying wounded Greek soldiers safely from battle. One day, Zeus decided to adopt Pegasus as his special friend and horse. He brought him to live on Mount Olympus.

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