Étoiles Herbig de type Ae/Be

Herbig Ae/Be stars (so called Herbig-Bell) are young object of spectral type A or earlier, with emission lines, located in an obscured region of the sky and illuminates fairly bright nebulosity in its immediate vicinity (star forming regions).

Many of this pre-main sequence stars are located on the Orion nebula. Note that T Tauri type stars are low-mass counterparts of higher-mass Herbig Ae/Be stars. Fu Orionis stars can be also likened to the Herbig Ae/Be class.

Often, the only difference between the Ae/Be stars and the Herbig Ae/Be stars comes from the presence of the association with nebulosity for the last situation. Generaly, the emission concern H-alpha and Ca II H&K lines.

The most bright Herbig-Bell stars:

   HD       Name           R.A.       Dec.    Mv       Spec.

275877    XY Per       3 h 46.6    38° 59   9.36    A5:e
          T Tau        4 h 21.9    19° 32   9.90    K0IV, V(Li)
283572                 4 h 21.9    28° 18   9.04    G5 IV(Li)
283571    RY Tau       4 h 21.9    28° 27   10.0    KAIV, V(Li)
 31293    AB Aur       4 h 55.7    30° 33   7.07    B9, A+e+shl
282624    SU Aur       4 h 56.0    30° 34   8.93    G2 III(Li)
          UX Ori       5 h 04.5   -03° 48   9.72    A3e III
          RW Aur A     5 h 07.8    30° 24   10.1    K1:
          CO Ori       5 h 27.6    11° 26   9.83    F8:e V(Li)
244138    GW Ori       5 h 29.1    11° 52   9.80    G5 (Li)
245059                 5 h 34.6    10° 07   9.82    K3 V:(Li)
245185                 5 h 35.1    10° 02   9.93    A5e
          NV Ori       5 h 35.5   -05° 33   9.91    F4, 8 III,V
          MX Ori       5 h 35.6   -05° 09   9.90    G2(Li)
          T Ori        5 h 35.8   -05° 29   9.96    A3e
 36910    CQ Tau       5 h 35.9    24° 44   10.0    A8ve
245465    BN Ori       5 h 36.5    06° 50   9.64    F2,3e
          V380 Ori     5 h 36.8   -06° 40   10.0    A1:e
          V586 Ori     5 h 37.0   -06° 09   9.54    A2e
          FU Ori       5 h 45.6    09° 04   9.24    G; I, II
288313                 5 h 54.1    01° 40   9.93    K2:n(Li)
250550    MCW 789      6 h 02.0    16° 31   9.48    B9eq
259431    MCW 147      6 h 33.1    10° 19   8.69    B5:e
 53179    Z CMa        7 h 03.7   -11° 33   9.35    B?eq pec
144668    V856 Sco    16 h 08.6   -39° 06   6.79    A7e III,IV
200775    MCW 361     21 h 01.6    68° 10   7.39    A0pe+shell
152404    AK Sco      16 h 54.7   -36° 53   8.82    F5e
          +41°3731    20 h 24.3    42° 18   9.88    B2, 3e
          +46° 3471   21 h 52.6    47° 14   10.1    A4:e+shell

Click here for a complete catalog of Herbig-Bell stars (http://www-astro.phast.umass.edu/catalogs/HBC/HBC.html)