Asteroid Day: an official global event, online – 30 June 2015

Source: Virtual Telescope
Asteroid Day: an official global event, online – 30 June 2015
Next 30 June 2015, anniversary of the 1908 Tunguska event, will be internationally celebrated as the “Asteroid Day“: it is “a global awareness movement where people from around the world come together to learn about asteroids and what we can do to protect our planet, our families, communities, and future generations“. The Virtual Telescope Project […]

A new survey of cool supergiants in the Magellanic Clouds⋆

Source: Astronomy & Astrophysics
A new survey of cool supergiants in the Magellanic Clouds⋆
Authors: Carlos González-Fernández, Ricardo Dorda, Ignacio Negueruela and Amparo Marco.<br />Astronomy & Astrophysics Vol. 578 , page A3<br />Published online: 22/05/2015<br />
Keywords:
supergiants ; stars: massive ; stars: late-type ; stars: AGB and post-AGB ; Magellanic Clouds ; surveys.<img src=”http://feeds.feedburner.com/~r/edp_aa/~4/tKtO9CS7rws” height=”1″ width=”1″ alt=””/>

WISE J061213.85-303612.5: a new T-dwarf binary candidate⋆⋆⋆

Source: Astronomy & Astrophysics
WISE J061213.85-303612.5: a new T-dwarf binary candidate⋆⋆⋆
Authors: N. Huélamo, V. D. Ivanov, R. Kurtev, J. H. Girard, J. Borissova, D. Mawet, K. Mužić, C. Cáceres, C. H. F. Melo, M. F. Sterzik and D. Minniti.<br />Astronomy & Astrophysics Vol. 578 , page A1<br />Published online: 22/05/2015<br />
Keywords:
brown dwarfs ; binaries: visual ; techniques: high angular resolution.<img src=”http://feeds.feedburner.com/~r/edp_aa/~4/0QYWHAhCLvA” height=”1″ width=”1″ alt=””/>

Hubble Observes One-of-a-Kind Star Nicknamed 'Nasty'

Source: Hubble News
Hubble Observes One-of-a-Kind Star Nicknamed ‘Nasty’

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Astronomers have spent decades trying to determine the oddball behavior of an
aging star nicknamed “Nasty 1″ residing in our Milky Way galaxy. Nasty 1 was identified as a Wolf-Rayet star, a rapidly evolving star that is much
more massive than our sun. The star loses its hydrogen-filled outer layers quickly, exposing its super-hot and extremely bright helium-burning core.

Evolution of column density distributions within Orion A⋆⋆⋆

Source: Astronomy & Astrophysics
Evolution of column density distributions within Orion A⋆⋆⋆
Authors: A. M. Stutz and J. Kainulainen.<br />Astronomy & Astrophysics Vol. 577 , page L6<br />Published online: 21/05/2015<br />
Keywords:
ISM: clouds ; ISM: structure ; stars: formation ; ISM: individual objects: Orion A.<img src=”http://feeds.feedburner.com/~r/edp_aa/~4/DMJEtdM_apE” height=”1″ width=”1″ alt=””/>

Nova Sagittarii 2015 n.2 (= PNV J18365700-2855420): an image (19 May 2015)

Source: Virtual Telescope
Nova Sagittarii 2015 n.2 (= PNV J18365700-2855420): an image (19 May 2015)
On 15 March 2015, J. Seach, Chatsworth Island, NSW, Australia, discovered a possible galactic nova in Sagittarius, temporarily named PNV J18365700-2855420. The nova nature was spectroscopically confirmed and the source was officially announced as Nova Sagittarii 2015 n.2. It turned out to be the brightest nova since 2013 (see V399 Del, aka Nova Delphini 2013). Since it […]

Nova Delphini 2013 – V339 Delphini: a new image (19 May 2015) and movie (15 Aug. 2013 – 19 May 2015)

Source: Virtual Telescope
Nova Delphini 2013 – V339 Delphini: a new image (19 May 2015) and movie (15 Aug. 2013 – 19 May 2015)
More than one year has gone since the last observation of V339 Del, also known as Nova Delphini 2013, via the Virtual Telescope. This star was a primary, scientific target for our project : it is worth to mention that this transient was classified as a nova also thanks to our very early spectroscopy. V339 Delphini was […]

The Dreadful Beauty of Medusa

Source: ESO Top News
The Dreadful Beauty of Medusa
Astronomers using ESO’s Very Large Telescope in Chile have captured the most detailed image ever taken of the Medusa Nebula. As the star at the heart of this nebula made its transition into retirement, it shed its outer layers into space, forming this colourful cloud. The image foreshadows the final fate of the Sun, which will eventually also become an object of this kind.

Discovery of interstellar ketenyl (HCCO), a surprisingly abundant radical⋆⋆⋆

Source: Astronomy & Astrophysics
Discovery of interstellar ketenyl (HCCO), a surprisingly abundant radical⋆⋆⋆
Authors: Marcelino Agúndez, José Cernicharo and Michel Guélin.<br />Astronomy & Astrophysics Vol. 577 , page L5<br />Published online: 20/05/2015<br />
Keywords:
astrochemistry ; line: identification ; ISM: clouds ; ISM:
molecules ; radio lines: ISM.<img src=”http://feeds.feedburner.com/~r/edp_aa/~4/3RzW_q_d0RE” height=”1″ width=”1″ alt=””/>