T Hare ( Latin T Leporis ) is a variable star of the Mira type, which is located in the constellation Hare at a distance of about 500 light-years from us.
| T hare | |||
|---|---|---|---|
| Star | |||
 Earth's orbit in comparison with the size of T Hare | |||
| Observational data ( Age J2000.0 ) | |||
| Type of | Single star | ||
| Right ascension | |||
| Declination | |||
| Distance | 500 St. years [1] | ||
| Visible magnitude ( V ) | 7.3-14.3 [2] | ||
| Constellation | Hare | ||
| Astrometry | |||
| Radial velocity ( R v ) | -4 [3] km / s | ||
| Own movement (μ) | RA: 8.17 [3] Dec: -31.63 [3] | ||
| Parallax (π) | -1.77 ± 2.73 [3] mas | ||
| Absolute magnitude (V) | 4.01 | ||
| Specifications | |||
| Spectral class | M6IIIevC [3] | ||
| Variability | myrida | ||
| physical characteristics | |||
| Temperature | 2800 [4] K | ||
| |||
| Database Information | |||
| SIMBAD | data | ||
| Sources: [3] | |||
Content
Features
T The hare is a red giant - a star preparing to drop the outer layers of matter to turn into a white dwarf . The dimensions of the Hare T constantly fluctuate: it expands and contracts with a period of 368 days. [4] Visible brightness in this case ranges from 7.3 to 14.3 magnitude. [2] After each maximum, the star loses a mass equal to the mass of the Earth. [1] A spectral analysis of the star revealed such elements as Zr , Nd, and Fe in its atmosphere. The surface temperature of the star is 2800 degrees Kelvin .
According to the generally accepted theory of stellar evolution , our Sun in 5 billion years will turn into a red giant resembling T Hare and then drop its outer layers, forming a planetary nebula .
Notes
- ↑ 1 2 Unique Details Of Double Star In Orion Nebula And Star T Leporis Captured By 'Virtual' Telescope. (eng.) . Science Daily (2009, February 19). Date of treatment April 22, 2010. Archived April 23, 2012.
- ↑ 1 2 Jean-Baptiste Le Bouquin (ESO), Sylvestre Lacour (LAOG), Stephanie Renard (LAOG), Eric Thiebaut (LAOG), Antoine Merand (ESO), Tijl Verhoelst. Pre-maximum spectro-imaging of the Mira star T Lep with AMBER / VLTI . Arxiv.org (Feb 23, 2009). Date of treatment April 22, 2010.
- ↑ 1 2 3 4 5 6 SIMBAD (English) . - T Hares in the SIMBAD database . Date of treatment April 22, 2010.
- ↑ 1 2 DA Garcia-Hernandez, P. Garcia-Lario, B. Plez, A. Manchado, F. D'Antona, J. Lub, H. Habing. Lithium and zirconium abundances in massive Galactic O-rich AGB stars . Arxiv.org (5 Sep 2006). Date of treatment April 22, 2010. Archived April 23, 2012.
See also
- List of stars of the constellation Hare