#v hydrae

[siryl]

Illustration by Ann Feild of colossal plasma globules ejected from the accretion disc of a hypothetical white dwarf companion of the red giant V Hydrae, from an article at Space.com.

[netmassimo]

An article accepted for publication in 'The Astrophysical Journal' reports the results of a study of the star V Hydrae.

An article accepted for publication in "The Astrophysical Journal" reports the results of a study of the star V Hydrae that includes the discovery of a system of six rings that surround it and are expanding and two hourglass structures. A team led by Raghvendra Sahai of NASA's JPL used the ALMA radio telescope and data collected with the Hubble Space Telescope to study the materials that were ejected by V Hydrae in the agony that will lead to its death. These observations can provide valuable information to better understand the processes taking place during a relatively short phase that for this reason is difficult to observe.

[netmassimo]

Un articolo accettato per la pubblicazione sulla rivista 'The Astrophysical Journal' riporta i risultati di uno studio della stella V Hydrae.

Un articolo accettato per la pubblicazione sulla rivista "The Astrophysical Journal" riporta i risultati di uno studio della stella V Hydrae che include la scoperta di un sistema di sei anelli che la circondano e si stanno espandendo e due strutture a clessidra. Un team guidato da Raghvendra Sahai del JPL della NASA ha usato il radiotelescopio ALMA e dati raccolti con il telescopio spaziale Hubble per studiare i materiali che sono stati espulsi da V Hydrae nel corso dell'agonia che la porterà alla morte. Queste osservazioni possono fornire preziose informazioni per capire meglio i processi in atto durante una fase relativamente breve e quindi difficile da osservare.

[alxndrasplace]

(HubbleSite)  Artist's Illustration of Scenario for Plasma Ejections from V Hydrae

This four-panel graphic illustrates how the binary-star system V Hydrae is launching balls of plasma into space.

Panel 1 shows the two stars orbiting each other. One of the stars is nearing the end of its life and has swelled in size, becoming a red giant.

In panel 2, the smaller star's orbit carries the star into the red giant's expanded atmosphere. As the star moves through the atmosphere, it gobbles up material from the red giant, which settles into a disk around the star.

The buildup of material reaches a tipping point and is eventually ejected as blobs of hot plasma along the star's spin axis, shown in panel 3.

This ejection process is repeated every eight years, the time it takes for the orbiting star to make another pass through the bloated red giant's envelope, shown in panel 4.

Credits: NASA, ESA, and R. Sahai (JPL); 

Artist's Illustration Credit: NASA, ESA, and A. Feild (STScI)

Source

[netmassimo]

An article published in "The Astrophysical Journal" describes a research on the huge plasma blobs ejected by the red giant star V Hydrae. A team of astronomers led by Raghvendra Sahai of NASA's JPL used the Hubble Space Telescope to study this phenomenon and concluded that the plasma blobs come from another star, a companion of V Hydrae that we can't see.

[netmassimo]

Un articolo pubblicato sulla rivista "The Astrophysical Journal" descrive una ricerca sulle enormi bolle di plasma espulse dalla stella gigante rossa V Hydrae. Un team di astronomi guidato da Raghvendra Sahai del JPL della NASA ha utilizzato il telescopio spaziale Hubble per studiare questo fenomeno concludendo che quelle bolle di plasma provengono da un'altra stella, una compagna di V Hydrae che non riusciamo a vedere.