O
Classificazione stellare

O
Temperatura efficace
≥ 25,000 K
Raggio solare
≥ 6.6 R☉
Massa solare
≥ 16 M☉

Una stella di classe O V (o stella blu di sequenza principale o stella O V, in passato nana blu) è una stella di sequenza principale (ovvero che nel proprio nucleo fonde l'idrogeno in elio) di classe spettrale O e classe di luminosità V (5 in numeri romani). Tali stelle hanno una massa che va da 15 a 90-150 M⊙, con temperature superficiali comprese tra 30 000 e 52 000 K. Le loro luminosità sono comprese tra 30 000 ed 1 000 000 L⊙. Le stelle di classe O V sono estremamente rare: si ritiene che nella nostra galassia, la Via Lattea, il loro numero ammonti a non più di 20 000, su un totale di circa 100 miliardi di stelle. Esempi di questa categoria stellare sono σ Orionis A e 10 Lacertae.

Uses material from the Wikipedia article "Stella di classe O V", which is released under the Creative Commons BY-SA 3.0.
Oggetto celeste Distanza Wiki
10 LacertaeStella, Double or multiple star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO1726[x]
AlnitakStella, Double or multiple star, Emission-line Star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO736[x]
AlniyatStella, Double or multiple star, Star in Nebula, Variable Star of beta Cep type, Regione H II, Infra-Red source, Mezzo interstellare, Radio-source, Nebulosa a riflessione, Stella binaria, UV-emission source, Variable StarO474[x]
BD+50 2869Stella, Emission-line Star, Galassia, Infra-Red source, Nebulosa planetaria, UV-emission source, Variable StarO2000[x]
BD-12 1172Stella, centimetric Radio-source, Emission-line Star, Infra-Red source, Nova, Nebulosa planetaria, Radio-source, sub-millimetric source, UV-emission source, Variable StarO1100[x]
Eta CarinaeStella, Double or multiple star, Star in double system, Star in Cluster, Emission-line Star, Raggi gamma, Infra-Red source, Nova, Radio-source, Supergigante blu, sub-millimetric source, UV-emission source, Variable Star, X-ray sourceO7700[x]
GCRV 4981Stella, Emission-line Star, Infra-Red source, Nebulosa planetaria, Radio-source, Variable StarO800[x]
HD 218915Stella, Infra-Red source, Supergigante blu, Stella binaria, UV-emission sourceO2490[x]
QZ CarinaeStella, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Infra-Red source, Stella binaria, UV-emission source, Variable Star, X-ray sourceO1953[x]
Sigma OrionisStella, Double or multiple star, Star in Cluster, Infra-Red source, Stella binaria, UV-emission source, Variable Star, X-ray sourceO1148[x]
V1357 CygniStella, Star in Association, Stella Ae/Be di Herbig, Buco nero, Ellipsoidal variable Star, Raggi gamma, High Mass X-ray Binary, Infra-Red source, Supergigante blu, Stella binaria, Variable Star, X-ray sourceO7500[x]
Zeta PuppisStella, Variable of BY Dra type, Emission-line Star, Infra-Red source, Pulsating variable Star, Radio-source, UV-emission source, Variable Star, X-ray sourceO1083[x]
2MASS J02321086+6133080Stella, Star in Association, Star in Cluster, Infra-Red source, Oggetto stellare giovaneO5982
2MASS J02340253+6123108Stella, Star in Association, Star in Cluster, Infra-Red source, Oggetto stellare giovaneO5969
BD+33 1025Stella, Star in Association, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO824
BD+56 556Stella, Double or multiple star, Star in Cluster, Infra-Red sourceO7672
CD-24 13785Stella, Double or multiple star, Star in Cluster, Infra-Red sourceO4395
CD-41 11037Stella, Star in Cluster, Infra-Red source, Stella binaria, Variable Star, X-ray sourceO4049
CD-58 3526Stella, Star in Cluster, Infra-Red source, X-ray sourceO8903
Cl Pismis 24 1Stella, Double or multiple star, Star in double system, Star in Cluster, Infra-Red source, X-ray sourceO8150
CPD-58 2625Stella, Star in Cluster, Infra-Red source, Ammasso aperto, X-ray sourceO8900
CPD-59 2591Stella, Double or multiple star, Star in Cluster, Infra-Red source, Ammasso aperto, X-ray sourceO8227
CPD-59 2626Stella, Star in Cluster, Infra-Red source, Ammasso aperto, X-ray sourceO8248
CPD-62 2198Stella, Star in Cluster, Infra-Red sourceO5895
HD 101333Stella, Star in Cluster, Infra-Red source, UV-emission sourceO5850
HD 12993Stella, UV-emission source, Variable StarO2435
HD 148937Stella, Double or multiple star, Emission-line Star, Emission Object, Galassia, Regione H II, Infra-Red source, Mezzo interstellare, Nebulosa planetaria, Stella binaria, UV-emission source, Variable Star, X-ray sourceO1388
HD 152200Stella, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO4032
HD 152233Stella, Double or multiple star, Star in Cluster, Infra-Red source, Stella binaria, Variable Star, X-ray sourceO4009
HD 152314Stella, Double or multiple star, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO4191
HD 15570Stella, Star in Association, Star in Cluster, Emission-line Star, Infra-Red source, Variable StarO2104
HD 155889Stella, Double or multiple star, Infra-Red source, UV-emission sourceO2718
HD 167971Stella, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Emission-line Star, Infra-Red source, Supergigante blu, UV-emission source, Variable Star, X-ray sourceO2160
HD 168137Stella, Star in Cluster, Infra-Red source, Stella binaria, X-ray sourceO1394
HD 171198Stella, Infra-Red source, UV-emission sourceO1365
HD 17520Stella, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Variable StarO7766
HD 193443Stella, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceO3546
HD 206183Stella, Double or multiple star, Star in Cluster, Infra-Red source, Ammasso aperto, UV-emission sourceO2039
HD 215835Stella, Double or multiple star, Star in Association, Star in Cluster, Ellipsoidal variable Star, Infra-Red source, Stella binaria, UV-emission source, Variable Star, X-ray sourceO5018
HD 216898Stella, Star in Association, Association of Stars, Infra-Red source, UV-emission sourceO1930
HD 217086Stella, Double or multiple star, Star in Association, Association of Stars, Infra-Red source, X-ray source, Oggetto stellare giovane, Oggetto stellare giovaneO1424
HD 308813Stella, Star in Cluster, Infra-Red sourceO5826
HD 308816Stella, Star in Cluster, Infra-Red sourceO5827
HD 308818Stella, Star in Cluster, Infra-Red sourceO5965
HD 312074Stella, Star in Cluster, Infra-Red sourceO6478
HD 315023Stella, Star in Cluster, Infra-Red sourceO4311
HD 75222Stella, Infra-Red source, Supergigante blu, UV-emission sourceO2364
HD 8768Stella, Double or multiple star, Star in ClusterO8583
HD 91983Stella, Star in Cluster, Infra-Red sourceO7546
HD 99897Stella, Regione H II, Infra-Red sourceO1802
HERSCHEL 36Stella, Double or multiple star, Star in Cluster, Infra-Red source, Stella binaria, Variable Star, Oggetto stellare giovaneO4500
HIP 101341Stella, Double or multiple star, Star in Association, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Emission-line Star, Infra-Red source, Supergigante blu, Stella binaria, Variable Star, X-ray sourceO2146
HIP 102167Stella, Infra-Red sourceO2363
HIP 11792Stella, Star in Association, Star in Cluster, Infra-Red source, Oggetto stellare giovaneO1236
HIP 17113Stella, Double or multiple star, Infra-Red sourceO635
HIP 172Stella, Star in Cluster, Infra-Red sourceO2861
HIP 18175Stella, Infra-Red sourceO968
HIP 23527Stella, Infra-Red sourceO813
HIP 26889Stella, Infra-Red source, Stella binariaO965
HIP 28711Stella, Infra-Red sourceO355
HIP 29216Stella, Infra-Red source, UV-emission source, X-ray sourceO994
HIP 40430Stella, Infra-Red source, Nova-like Star, Nova, High proper-motion Star, Stella binaria, UV-emission source, Variable Star, X-ray sourceO315
HIP 82691Stella, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Emission-line Star, Infra-Red source, Supergigante blu, Stella binaria, Variable Star, X-ray sourceO4056
HIP 89743Stella, Star in Cluster, Infra-Red source, X-ray sourceO1371
HR 6272Stella, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Supergigante blu, UV-emission source, Variable Star, Stella di Wolf-RayetO2265
HR 7767Stella, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceO1941
HR 8281Stella, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Ammasso aperto, Stella binaria, UV-emission source, X-ray sourceO1977
IRAS 21565-3937Galassia, Infra-Red source, Nebulosa planetariaO3000
lam01 OrionisStella, Double or multiple star, Emission-line Star, Infra-Red source, UV-emission source, X-ray sourceO1440
MenkibStella, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO1245
TYC 3694-1331-1Stella, Star in Association, Star in Cluster, Association of Stars, Be Star, Emission-line Star, Infra-Red sourceO7680
V1034 ScorpiiStella, Double or multiple star, Star in Cluster, Eclipsing binary of Algol type (detached), Stella binaria, Infra-Red source, Stella binaria, Variable Star, X-ray sourceO4157
V1292 ScorpiiStella, Star in Cluster, Eclipsing binary of Algol type (detached), Infra-Red source, Stella binaria, Variable Star, X-ray sourceO4102
X PerseiStella, Double or multiple star, Stella Ae/Be di Herbig, Be Star, Emission-line Star, Raggi gamma, High Mass X-ray Binary, Infra-Red source, Confirmed Neutron Star, Pulsar, Stella binaria, UV-emission source, Variable Star, X-ray sourceO1394