Back HL Цяльца Byelorussian HL del Taure Catalan HL Tauri German HL Tauri Spanish HL Tauri Finnish HL Tauri French おうし座HL星 Japanese HL Tauri LB HL Tauri Occitan HL Тельца Russian

HL Tauri

Not to be confused with HL Tau 76.
HL Tauri
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension 04h 31m 38.437s[3]
Declination +18° 13′ 57.65″[3]
Characteristics
Evolutionary stage Pre-main-sequence star
Spectral type Class K9
Apparent magnitude (V) 15.1
B−V color index 0.92
V−R color index 0.89
J−H color index 1.45
J−K color index 3.21
Variable type T Tauri
Astrometry
Proper motion (μ) RA: +8.0±6.0[4] mas/yr
Dec.: -21.8±5.8[4] mas/yr
Distance450[1] ly
(140 pc)
Database references
SIMBADdata

HL Tauri (abbreviated HL Tau) is a young T Tauri star[5] in the constellation Taurus, approximately 450 light-years (140 pc) from Earth[1] in the Taurus Molecular Cloud.[6] The luminosity and effective temperature of HL Tauri imply that its age is less than 100,000 years.[7] At apparent magnitude 15.1,[3] it is too faint to be seen with the unaided eye. It is surrounded by a protoplanetary disk marked by dark bands visible in submillimeter radiation that may indicate a number of planets in the process of formation.[2] It is accompanied by the Herbig–Haro object HH 150, a jet of gas emitted along the rotational axis of the disk that is colliding with nearby interstellar dust and gas.[8]

  1. ^ a b c Cite error: The named reference bbc20141106 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference NRAO was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference kwon2011 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Weintraub1995 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Stephens2014 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Boss1989 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference esa20141106 was invoked but never defined (see the help page).

Rich TVX News Network Site

Rich TVX News Network Info

© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search