XZ Tauri

Image of the stars XZ Tauri (left below center, reddish) and HL Tauri (right above center, bluish), surrounded by a molecular cloud , taken with the Hubble Space Telescope

AladinLite

Observation
dates equinox : J2000.0 , epoch : J2000.0

bull

04 ^h 31 ^m 40.09 ^s

+ 18 ° 13 ′ 56.6 ″

10.4 mag

Typing

M2e + M2e

CTTS / RED

(18.3 ± 0.04) km / s

distance

450 ly

Proper movement

Rec. Share:

(9.1 ± 2.0) mas / a

Dec. portion:

(−17.8 ± 2.0) mas / a

Physical Properties

Other names
and catalog entries

2MASS catalog	2MASS J04314007 + 1813571 [1]
Other names	XZ Tauri

XZ Tauri (abbreviated XZ Tau ) is a double or triple star system in the constellation Taurus , located in the Taurus Molecular Cloud , about 450 light years from Earth. The system is formed by two variable T-Tauri stars that revolve around a common center of gravity at a distance of 6 billion kilometers (roughly the distance from the Sun to Pluto ). An investigation from 2009 suggests that a star still has a nearby companion star, so that the overall result is a three-star system.

Animation of the superflare from 2000, taken with the Hubble space telescope

The star system has formed a bubble with about 10,000 Kelvin hot gas, the edge of which is about 96 billion kilometers away from the stars and continues to expand at 150 km / s. These parameters, which are typical for T-Tauri stars, suggest that the bubble is 30 years old. An image sequence from the Hubble Space Telescope over several years shows an expansion by a second bubble and makes it clear that further outbreaks occur sporadically.

The Herbig Haro object HH152 is evoked by XZ Tauri.

Web links

Commons : XZ Tauri - Collection of images, videos and audio files

literature

Martin Schwarzschild: Princeton University Press (ed.): Structure and Evolution of the Stars ( en ) 1958, ISBN 0-691-08044-5 .
De Agostini (ed.): L'Universo - Grande enciclopedia dell'astronomia 2002.
J. Gribbin: Garzanti (Ed.): Enciclopedia di astronomia e cosmologia 2005, ISBN 88-11-50517-8 .
W. Owen, et al: Il Viaggiatore (Ed.): Atlante illustrato dell'Universo 2006, ISBN 88-365-3679-4 .
J. Lindstrom: Editoriale Scienza (ed.): Stelle, galassie e misteri cosmici 2006, ISBN 88-7307-326-3 .
C. Abbondi: Sandit (ed.): Universo in evoluzione dalla nascita alla morte delle stelle 2007, ISBN 88-89150-32-7 .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f XZ Tau. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 14, 2018 .
↑ XZ Tau. In: VSX. AAVSO, accessed September 14, 2018 .
↑ ^a ^b ^c Movie Shows the Changing Faces of an Infant Star XZ Tauri . Retrieved December 7, 2014.
^ ^A ^b C. Carrasco-Gonzales, LF Rodriguez, G. Anglada, S. Curiel: High Angular Resolution Radio Observations of the HL / XZ Tau Region: Mapping the 50 AU Protoplanetary Disk Around HL Tau and Resolving XZ Tau S Into a 13 AU Binary (= Astrophysical Journal . Volume 693 , no. 2 ). 2009, p. L86-L90 , doi : 10.1088 / 0004-637X / 693/2 / L86 , bibcode : 2009ApJ ... 693L..86C .

[simbad-1] ↑ ^a ^b ^c ^d ^e ^f XZ Tau. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 14, 2018 .

[VSXEntry-2] XZ Tau. In: VSX. AAVSO, accessed September 14, 2018 .

[XZTau-3] Movie Shows the Changing Faces of an Infant Star XZ Tauri . Retrieved December 7, 2014.

[XZ_triple-4] A ^b C. Carrasco-Gonzales, LF Rodriguez, G. Anglada, S. Curiel: High Angular Resolution Radio Observations of the HL / XZ Tau Region: Mapping the 50 AU Protoplanetary Disk Around HL Tau and Resolving XZ Tau S Into a 13 AU Binary (= Astrophysical Journal . Volume 693 , no. 2 ). 2009, p. L86-L90 , doi : 10.1088 / 0004-637X / 693/2 / L86 , bibcode : 2009ApJ ... 693L..86C .