Anne’s Picture of the Day: The Double Cluster
read more at Anne’s Astronomy News http://annesastronomynews.com/
October 16, 2012
The Double Cluster, two open star clusters in Perseus
Image Credit & Copyright: Roth Ritter, Dark Atmospheres Astrophotography (http://www.darkatmospheres.com/astro)
The Double Cluster (also known as Caldwell 14) consists of the open star clusters NGC 884 and NGC 869 which are close together within the Perseus arm of the Milky Way galaxy, in the constellation Perseus, quite close to the constellation Cassiopeia. NGC 884 (left) and NGC 869 (right) are at distances of 7600 and 6800 light-years away, respectively. The Double Cluster represents the jeweled handle of Perseus’s sword.
The clusters are blueshifted, with NGC 869 approaching Earth at a speed of 22 kilometers per second and NGC 884 approaching at a similar speed of 21 kilometers per second.
Separated by just a few hundred light-years, each cluster contains hundreds of young, hot stars, much younger and hotter than the Sun. Among them are more than 300 blue-white super-giant stars, that are many thousands of times more luminous than our Sun, and a few orange stars. The clusters are both part of the so-called Perseus OB1 association, an assembly of extremely massive stars.
The clusters’ ages, based on their individual stars, are pretty young. NGC 869 is 5.6 million years old and NGC 884 is 3.2 million years old, making them among the youngest star clusters known in the galaxy. In comparison, the Pleiades are over 100 million years old.
Open clusters are believed to originate in the same general area of space from the same local gas clouds. Due to their age similarities, it is likely that both NGC 884 and NGC 869 were a product of the same star-forming region.
The Double Cluster is a great target for binoculars and small telescopes, but also visible to the unaided eye from dark locations as a hazy patch. It nearly marks the radiant point of the Perseid meteor shower, which peaks annually around August 12 or 13.
n/a
2012-10-16 15:00:06
Source: http://annesastronomynews.com/annes-picture-of-the-day-the-double-cluster/
Source:
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world. Anyone can join. Anyone can contribute. Anyone can become informed about their world. "United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
LION'S MANE PRODUCT
Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules
Mushrooms are having a moment. One fabulous fungus in particular, lion’s mane, may help improve memory, depression and anxiety symptoms. They are also an excellent source of nutrients that show promise as a therapy for dementia, and other neurodegenerative diseases. If you’re living with anxiety or depression, you may be curious about all the therapy options out there — including the natural ones.Our Lion’s Mane WHOLE MIND Nootropic Blend has been formulated to utilize the potency of Lion’s mane but also include the benefits of four other Highly Beneficial Mushrooms. Synergistically, they work together to Build your health through improving cognitive function and immunity regardless of your age. Our Nootropic not only improves your Cognitive Function and Activates your Immune System, but it benefits growth of Essential Gut Flora, further enhancing your Vitality.
Our Formula includes: Lion’s Mane Mushrooms which Increase Brain Power through nerve growth, lessen anxiety, reduce depression, and improve concentration. Its an excellent adaptogen, promotes sleep and improves immunity. Shiitake Mushrooms which Fight cancer cells and infectious disease, boost the immune system, promotes brain function, and serves as a source of B vitamins. Maitake Mushrooms which regulate blood sugar levels of diabetics, reduce hypertension and boosts the immune system. Reishi Mushrooms which Fight inflammation, liver disease, fatigue, tumor growth and cancer. They Improve skin disorders and soothes digestive problems, stomach ulcers and leaky gut syndrome. Chaga Mushrooms which have anti-aging effects, boost immune function, improve stamina and athletic performance, even act as a natural aphrodisiac, fighting diabetes and improving liver function. Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules Today. Be 100% Satisfied or Receive a Full Money Back Guarantee. Order Yours Today by Following This Link.
| Visits: | 1,707,021,898 |
| Stories: | 8,447,025 |
Whistler Blowers, Insiders
