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Articles by J. Dalcanton
Hubble detecta una magnífica galaxia barrada
26/04/2024 Pesca.- Huelva.- Arranca la XXVIII Feria de la Gamba, la Chirla y el Boquerón de Punta Umbría, que se celebrará hasta el domingo
Hubble capta dos galaxias separadas por 'solo' 40.000 años luz
Código: 5867606 Fecha: 05/04/2024 Dimensiones: 1106 x 804 (0.13MB) Fotos del Tema: 1 Pie de Foto: Imagen de Arp 72 tomada por el Hubble Firma: ESA / HUBBLE & NASA, L. GALBANY, J.
Hubble observa un vasto vecindario galáctico
08/01/2024 - Málaga Málaga.- Sergio Peris-Mencheta, Fernando Tejero, y Belén Rueda, primeros nombres del Festival de Teatro de Málaga
Our Next-Nearest Galactic Neighbor (2019)
The Milky Way is one of three large galaxies in the small cluster known as the Local Group. The other two are Andromeda (the biggest of the group) and Triangulum (M33), a small spiral. Despite the fact that it's probably as old as its larger neighbors, Triangulum is producing new stars at a fairly high rate, which intrigues astronomers. You may also like: 50 famous paintings and the stories behind them
Hubble spies spooky face in violent galaxy merger
The Hubble Space Telescope has peered into the past to reveal a creepy cosmic face emerging from the remnants of colliding galaxies. The gleaming eyes of the spooky face are in reality the central regions of the dueling galaxies, while the shape of the face, nose and mouth are formed from their tortured disks. The latest offering from the Hubble telescope was taken on June 19 this year, and shows a snapshot of a massive galactic collision unfolding 704 million light-years from Earth.
Dyson sphere: What are the odds of an alien megastructure blocking light from a distant star?
Right now the star KIC 8462852 is really hot – and not just because it is a F-type star – but because the Kepler space telescope has discovered that it flickers in a highly unusual way, as if something is obscuring it. These dips in the light are different to what you would expect from planets blocking the star.
Hubble survey unlocks clues to star birth in neighboring galaxy
In a survey of NASA's Hubble Space Telescope images of 2,753 young, blue star clusters in the neighboring Andromeda galaxy (M31), astronomers have found that M31 and our own galaxy have a similar percentage of newborn stars based on mass. By nailing down what percentage of stars have a particular mass within a cluster, or the Initial Mass Function (IMF), scientists can better interpret the light from distant galaxies and understand the formation history of stars in our universe.
Hubble's Greatest Hits
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In April 2014, Hubble data was used to weigh the largest known galaxy cluster in the distant universe—catalogued as ACT-CL J0102-4915—finding it lives up to its nickname, El Gordo (Spanish for "the fat one"). By measuring how much the cluster's gravity warps images of galaxies in the distant background, astronomers calculated El Gordo's mass to be as much as three million billion times the mass of our sun—roughly 43 percent more massive than earlier estimates.
By D. Magee, J. S. Anderson, J. Dalcanton, B. F. Williams, L. C. Johnson, H. E. Bond, J. J. Hester, G. Illingworth, C. R. O'Dell, G. Fritz Benedict, Andrew Howell, Inger Jorgensen, David Chapell, Jeffery Kenney, Andrew Fruchter, H. Ford, M. Clampin., G. Hartig, M. Meixner, P. McCullough, A. Loll, S. Beckwith, M. J. Jee, Holland Ford, T. Sohn, N. Walborn
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National Geographic
Verified
APOD: 2015 January 6
Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2015 January 6 100 Million Stars in the Andromeda Galaxy Image Credit: NASA, ESA, J. Dalcanton, B. F. Williams, L. C. Johnson (U. Washington), PHAT team, R. Gendler Explanation: What stars compose the Andromeda galaxy?
Hubble's High-Definition Panoramic View of the Andromeda Galaxy
The largest NASA Hubble Space Telescope image ever assembled, this sweeping view of a portion of the Andromeda galaxy (M31) is the sharpest large composite image ever taken of our galactic neighbor. Though the galaxy is over 2 million light-years away, the Hubble telescope is powerful enough to resolve individual stars in a 61,000-light-year-long section of the galaxy's pancake-shaped disk. It's like photographing a beach and resolving individual grains of sand.
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