Rambler's Top100Astronet    
  po tekstam   po klyuchevym slovam   v glossarii   po saitam   perevod   po katalogu
 

V838 Mon: Echoes from the Edge
<< Yesterday 5.03.2004 Tomorrow >>
V838 Mon: Echoes from the Edge
Credit & Copyright: NASA and the Hubble Heritage Team(AURA / STScI)
Explanation: Variable star V838 Monocerotis lies near the edge of our Milky Way Galaxy, about 20,000 light-years from the Sun. Still, ever since a sudden outburst was detected in January 2002, this enigmatic star has taken the center of an astronomical stage while researchers try to understand where it fits into the picture of stellar evolution. As light from the stellar flash echoes across pre-existing dust shells around V838 Mon, its appearance changes dramatically. Revealed in a sharp snapshot recorded in February by the Hubble's Advanced Camera for Surveys, this portion of the dust shell is about six light-years in diameter. But because light reflected from the dust follows only a slightly indirect path compared to the direct line-of-sight to the star, the light echoes visible now are only lagging about two years behind the outburst itself. Astronomers expect the expanding echoes to continue to light up the dusty environs of V838 Mon for at least the rest of the current decade.

<<  Mart  >>
Pn Vt Sr Cht Pt Sb Vs
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31        
1995   1996   1997
1998   1999   2000
2001   2002   2003
2004   2005   2006
2007   2008   2009
2010   2011   2012
2013   2014   2015
2016   2017   2018
2019   2020   2021
2022   2023   2024
Yanvar'
Fevral'
Mart
Aprel'
Mai
Iyun'
Iyul'
Avgust
Sentyabr'
Oktyabr'
Noyabr'
Dekabr'
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Russkii tekst
Based on Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: v838 mon - variable star - light echo - zvezdy, peremennye
Publikacii so slovami: v838 mon - variable star - light echo - zvezdy, peremennye
Sm. takzhe:
Vse publikacii na tu zhe temu >>

Ocenka: 2.9 [golosov: 43]
 
O reitinge
Versiya dlya pechati Raspechatat'

Astronet | Nauchnaya set' | GAISh MGU | Poisk po MGU | O proekte | Avtoram

Kommentarii, voprosy? Pishite: info@astronet.ru ili syuda

Rambler's Top100 Yandeks citirovaniya