Zerrenda:Gertuen dauden izarrak
Jarraian aurki dezakezuen zerrenda, gure planetatik hurbilen dauden izarrei buruzkoa da. Distantziaren arabera ordenaturik daude, lehenak, guregandik hurbilen daudenak dira eta 5 parsec (16,3 argi-urte) arteraino aurki daitzazkegunak daude zerrendatuta. Kontuan hartzekoa da, gero eta urrunagoko izarrak behatzean, errore edo akats tartea orduan eta handiagoa izango dela, distantzia kalkulatzerakoan. Errore erlatiboa %2a baino handiagoa izatea da ohikoena. Esandako distantzia-tartean, (5 parsec) gaur egun, 66 izar ezagutzen ditugu (Eguzkiarekin batera) eta hauek 50 izar-sistema osatzen dituzte.
Taulan gris ilunez ageri diren izarrak, tresna baten laguntzarik gabe (teleskopio, prismatiko, etab.) ikus ezin diren horiek dira, izar hauek 6,5eko itxurazko magnitudea gainditzen dute. Izar bakoitzaren espektro-mota, ''izar mota'' zutabeko hondoko kolorearekin bat dator. Bestalde, ''paralaxia'' zutabean letra gorriz ageri diren izarrek oraindik ez dituzte behin-betiko neurketak eginak.
| # | Izendapena | Izar mota[1] | m | M | Teff | IZ | Dek | Paralaxia (arcsec) | Distantzia argi urteetan (± errorea) | Iturriak | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sistema | Izarra | ||||||||||
| 1 | Eguzkia | Nano Horia (G2V) | −26.72 | 4.85 | 5785 | – | – | 180° | 0.0000158125 (8 argi minutu eta 19.005 argi segundu) |
||
| 2 | Alfa Centauri | Proxima Centauri (V645 Centauri) | Nano gorria (M5.5Ve) | 11.01 | 15.53 | 2670 | 14h 29m 43s | −62° 40′ 46″ | 0.768 9(0 3)″ | 4.2420(16) | [2][3][4] |
| Alfa Centauri A (Rigil Kentaurus; Toliman) | Nano Horia (G2V) | −0.01 | 4.38 | 5800 | 14h 39m 37s | −60° 50′ 2″ | 0.747 2(1 2)″ | 4.3649(69) | [5][3] | ||
| Alfa Centauri B (HD 128621) | Nano laranja (K0V) | 1.35 | 5.71 | 5300 | 14h 39m 35s | −60° 50′ 14″ | |||||
| 3 | Barnarden izarra (BD+04°3561a) | Nano Gorria (M4.0Ve) | 9.53 | 13.22 | 3134 | 17h 57m 48s | +04° 41′ 36″ | 0.547 0(1 0)″ | 5.9629(110) | [2][3] | |
| 4 | Luhman 16 | Luhman 16A | Nano marroia (L8±1) | 10.7 J | - | 10h 49m 15.57s | −53° 19′ 06″ | 0.495 (5)[6] | 6.59(7) | ||
| Luhman 16B | Nano marroia (L8±1) | – | |||||||||
| 5 | WISE 0855-0714 | Nano Marroia (Y) | – | – | – | 08h 55m 10.83s | -07° 14′ 42.5″ | – | 7.2(6) | [7] | |
| 6 | Wolf 359 (CN Leonis) | M6.0V | 13.44 | 16.55 | 3500 | 10h 56m 28s | +07° 00′ 42″ | 0.419 1(2 1)″ | 7.7823(390) | [3] | |
| 7 | Lalande 21185 (BD+36°2147) | M2.0V | 7.47 | 10.44 | 3400 | 11h 00m 37s | +36° 18′ 20″ | 0.393 4(0 7)″ | 8.2903(148) | [2][3] | |
| 8 | Sirio | Sirio A (α Canis Majoris) | Sekuentzia nagusiko izar zuria (A1V) | −1.47 | 1.48 | 9900 | 06h 45m 09s | −16° 42′ 58″ | 0.380 0(1 3)″ | 8.5826(290) | [2][3] |
| Sirio B | Nano zuria (DA2) | 8.44 | 11.34 | 25200 | |||||||
| 9 | Luyten 726-8 | UV Ceti (L 726-8 B) | M5.5Ve | 12.54 | 15.40 | ~2700 | 01h 39m 01s | −17° 57′ 00″ | 0.373 7(2 7)″ | 8.7278(631) | [3] |
| BL Ceti (L 726-8 A) | M6.0Ve | 12.99 | 15.85 | ~2600 | |||||||
| 10 | Ross 154 (V1216 Sagittarii) | M3.5Ve | 10.43 | 13.07 | ~2700 | 18h 49m 49s | −23° 50′ 11″ | 0.336 9(1 8)″ | 9.6811(512) | [2][3] | |
| 11 | Ross 248 (HH Andromedae) | M5.5Ve | 12.29 | 14.79 | - | 23h 41m 54s | +44° 09′ 32″ | 0.316 0(1 1)″ | 10.321(36) | [3] | |
| 12 | Ran (Epsilon Eridani) | K2V | 3.73 | 6.19 | 5100 | 03h 32m 56s | −09° 27′ 30″ | 0.310 0(0 8)″ | 10.522(27) | [2][3] | |
| 13 | Lacaille 9352 (CD-36°15693) | M1.5Ve | 7.34 | 9.75 | 3340 | 23h 05m 42s | −35° 51′ 11″ | 0.303 6(0 9)″ | 10.742(31) | [2][3] | |
| 14 | Ross 128 (FI Virginis) | M4.0Vn | 11.13 | 13.51 | - | 11h 47m 45s | +00° 48′ 17″ | 0.298 7(1 4)″ | 10.918(50) | [2][3] | |
| 15 | EZ Aquarii | EZ Aquarii (L 0789-006) | M5.0Ve | 13.33 | 15.64 | - | 22h 38m 34s | −15° 18′ 02″ | 0.289 5(4 4)″ | 11.266(172) | [3] |
| Gl 866 B | M? | 13.27 | 15.58 | - | |||||||
| Gl 866 C | M? | 14.03 | 16.34 | - | |||||||
| 16 | Procyon | Procyon A (α Canis Minoris) | F5V-IV | 0.38 | 2.66 | - | 07h 39m 18s | +05° 13′ 30″ | 0.286 1(0 9)″ | 11.402(33) | [2][3] |
| Procyon B | Nano zuria (DA) | 10.7 | 12.98 | - | |||||||
| 17 | 61 Cygni | 61 Cygni A (BD+38°4343) | K5.0V | 5.21 | 7.49 | - | 21h 08m 52s | +38° 56′ 51″ | 0.286 0(0 6)″ | 11.402(23) | [2][3] |
| 61 Cygni B (BD+38°4344) | K7.0V | 6.03 | 8.31 | - | |||||||
| 18 | Struve 2398 | Struve 2398 A (GJ 725 A, BD+59°1915) | M3.0V | 8.90 | 11.16 | - | 18h 42m 47s | +59° 37′ 50″ | 0.283 0(1 7)″ | 11.525(69) | [2][3] |
| Struve 2398 B (HD 173740) | M3.5V | 9.69 | 11.95 | - | |||||||
| 19 | Groombridge 34 | Gl 15 A (GX Andromedae) | M1.5V | 8.08 | 10.32 | - | 0h 18m 24s | +44° 1′ 24″ | 0.280 6(1 0)″ | 11.624(40) | [2][3] |
| Gl 15 B (GQ Andromedae) | M3.5V | 11.06 | 13.30 | - | |||||||
| 20 | Epsilon Indi (CP−57°10015) | K5Ve | 4.69 | 6.89 | - | 22h 03m 22s | −56° 47′ 10″ | 0.275 8(0 7)″ | 11.824(30) | [2][3] | |
| 21 | DX Cancri (G051-015) | M6.5Ve | 14.78 | 16.98 | - | 08h 29m 50s | +26° 46′ 37″ | 0.275 8(3 0)″ | 11.826(129) | [3] | |
| 22 | Tau Ceti (BD−16°295) | G8Vp | 3.49 | 5.68 | - | 01h 44m 04s | −15° 56′ 15″ | 0.274 4(0 8)″ | 11.887(33) | [2][3] | |
| 23 | GJ 1061 (LHS 1565) | M5.5V | 13.03 | 15.19 | - | 03h 35m 57s | −44° 30′ 46″ | 0.272 0(1 3)″ | 11.991(58) | ||
| 24 | YZ Ceti (LHS 138) | M4.5V | 12.02 | 14.17 | - | 01h 12m 31s | −16° 59′ 57″ | 0.268 8(3 0)″ | 12.132(14) | [2][3] | |
| 25 | Luytenen izarra (BD+05°1668) | M3.5Vn | 9.86 | 11.97 | - | 07h 27m 25s | +05° 13′ 33″ | 0.263 8(1 3)″ | 12.366(59) | [2][3] | |
| 26 | Teegardenen izarra (SO025300.5+165258) | M6.5V | 15.40 | 18.50 | - | 02h 53m 01s | +16° 52′ 58″ | 0.260 6(2 7)″ | 12.514(130) | [8] | |
| 27 | SCR 1845-6357 | M8.5V | 17.39 | 19.41 | - | 18h 45m 03s | −63° 57′ 48″ | 0.259 5(1 2)″ | 12.571(54) | [8] | |
| 28 | Kapteynen izarra (CD−45°1841) | M1.5V | 8.84 | 10.87 | - | 05h 11m 41s | −45° 01′ 06″ | 0.255 3(0 9)″ | 12.777(44) | [2][3] | |
| 29 | Lacaille 8760 (AX Microscopii) | M0.0V | 6.67 | 8.69 | - | 21h 17m 15s | −38° 52′ 03″ | 0.253 4(1 2)″ | 12.870(57) | [2][3] | |
| 30 | Kruger 60 | Kruger 60 A (BD+56°2783) | M3.0V | 9.79 | 11.76 | - | 22h 28m 00s | +57° 41′ 45″ | 0.248 1(1 4)″ | 13.148(74) | [5][3] |
| Kruger 60 B (DO Cephei) | M4.0V | 11.41 | 13.38 | - | |||||||
| 31 | DEN 1048-3956 | M8.5 V | 17.39 | 19.37 | - | 10h 48m 15s | −39° 56′ 06″ | 0.247 7(1 6)″ | 13.167(83) | [8] | |
| 32 | Ross 614 | Ross 614 (LHS 1849) | M4.5V | 11.15 | 13.09 | - | 06h 29m 23s | −02° 48′ 50″ | 0.244 3(2 1)″ | 13.348(110) | [5][3] |
| Gl 234 B (V577 Monocerotis) | M5.5V | 14.23 | 16.17 | - | |||||||
| 33 | Gl 628 (Wolf 1061, BD−12°4523) | M3.0V | 10.07 | 11.93 | - | 16h 30m 18s | −12° 39′ 45″ | 0.236 0(1 7)″ | 13.820(98) | [2][3] | |
| 34 | Van Maanenen izarra
(Gl 35, LHS 7) |
Nano zuria (DZ7) | 12.38 | 14.21 | - | 00h 49m 10s | +05° 23′ 19″ | 0.231 9(1 8)″ | 14.066(109) | [2][3] | |
| 35 | Gl 1 (CD−37°15492) | M3.0V | 8.55 | 10.35 | - | 00h 05m 24s | −37° 21′ 27″ | 0.229 2(1 1)″ | 14.230(67) | [2][3] | |
| 36 | Wolf 424 | Wolf 424 A (LHS 333) | M5.5Ve | 13.18 | 14.97 | - | 17h 33m 17s | +09° 01′ 15″ | 0.227 9(4 6)″ | 14.311(289) | [3] |
| Gl 473 B (FL Virginis) | M7Ve | 13.17 | 14.96 | - | |||||||
| 37 | TZ Arietis (GJ 83.1, Luyten 1159-16) | M4.5V | 12.27 | 14.03 | - | 02h 00m 13s | +13° 03′ 08″ | 0.224 8(2 9)″ | 14.509(188) | [3] | |
| 38 | Gl 687 (LHS 450, BD+68°946) | M3.0V | 9.17 | 10.89 | - | 17h 36m 26s | +68° 20′ 21″ | 0.220 5(0 9)″ | 14.792(55) | [2][3] | |
| 39 | LHS 292 (LP 731-58) | M6.5V | 15.60 | 17.32 | - | 10h 48m 13s | −11° 20′ 02″ | 0.220 3(3 6)″ | 14.805(243) | [3] | |
| 40 | Gl 674 (LHS 449) | M3.0V | 9.38 | 11.09 | - | 17h 28m 40s | −46° 53′ 43″ | 0.220 3(1 6)″ | 14.808(107) | [2][3] | |
| 41 | GJ 1245 (V1581 Cygni) | GJ 1245 A | M5.5V | 13.46 | 15.17 | - | 19h 53m 54s | −44° 24′ 55″ | 0.220 2(1 0)″ | 14.812(68) | [3] |
| GJ 1245 B | M6.0V | 14.01 | 15.72 | - | 19h 53m 55s | −44° 24′ 56″ | |||||
| GJ 1245 C | M? | 16.75 | 18.46 | - | 19h 53m 54s | −44° 24′ 55″ | |||||
| 42 | GJ 440 (WD 1142-645) | DQ6 | 11.50 | 13.18 | - | 11h 45m 43s | −64° 50′ 29″ | 0.216 6(2 1)″ | 15.060(140) | [2][3] | |
| 43 | GJ 1002 | M5.5V | 13.76 | 15.40 | - | 00h 06m 44s | −07° 32′ 22″ | 0.213 0(3 6)″ | 15.313(259) | [3] | |
| 44 | Ross 780 (GJ 876) | M3.5V | 10.17 | 11.81 | - | 22h 53m 17s | −14° 15′ 49″ | 0.212 6(2 0)″ | 15.342(142) | [2][3] | |
| 45 | LHS 288 (Luyten 143-23) | M5.5V | 13.92 | 15.66 | - | 10h 44m 32s | −61° 11′ 38″ | 0.209 0(2 8)″ | 15.609(204) | ||
| 46 | GJ 412 | GJ 412 A | M1.0V | 8.77 | 10.34 | - | 11h 05m 29s | +43° 31′ 36″ | 0.206 0(1 1)″ | 15.831(83) | [2][3] |
| WX Ursae Majoris | M5.5V | 14.48 | 16.05 | - | 11h 05m 30s | +43° 31′ 18″ | |||||
| 47 | Groombridge 1618 (GJ 380) | K7.0V | 6.59 | 8.16 | - | 10h 11m 22s | +49° 27′ 15″ | 0.205 8(0 7)″ | 15.847(52) | [2][3] | |
| 48 | GJ 388 | M3.0V | 9.32 | 10.87 | - | 10h 19m 36s | +19° 52′ 10″ | 0.204 6(2 8)″ | 15.941(219) | [3] | |
| 49 | GJ 832 | M3.0V | 8.66 | 10.20 | - | 21h 33m 34s | −49° 00′ 32″ | 0.202 8(1 4)″ | 16.084(105) | [2][3] | |
| 50 | LP 944-020 | M9.0V | 18.50 | 20.02 | - | 03h 39m 35s | −35° 25′ 41″ | 0.201 4(4 2)″ | 16.194(338) | [9] | |
| 51 | DEN 0255-4700 | L7.5V | 22.92 | 24.44 | - | 02h 55m 3.7s | −47° 00′ 52″ | 0.201 4(3 9)″ | 16.197(314) | [8] | |
| 52 | GJ 682 | M4.5V | 10.95 | 12.45 | - | 17h 37m 04s | −44° 19′ 09″ | 0.199 7(2 3)″ | 16.336(189) | [2][3] | |
| # | Izendapena | Izar mota | m | M | Teff | IZ | Dek | Paralaxia (arcsec) | Distantzia argi urteetan (± errorea)[10] | Iturriak | |
| Sistema | Izarra | ||||||||||
Ikus, gainera
[aldatu | aldatu iturburu kodea]Erreferentziak
[aldatu | aldatu iturburu kodea]- ↑ Izarren sailkapenari buruzko informazioa hurrengo webgunetik hartu da: http://www.chara.gsu.edu/RECONS/TOP100.htm
- ↑ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac Hipparcos katalogoa
- ↑ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq Yale Parallax Catalog
- ↑ Burgasser et al. 2000
- ↑ a b c Soderhjelm 1999
- ↑ .
- ↑ doi:. Bibcode: 2014ApJ...786L..18L..
- ↑ a b c d Recently discovered; exact distance is still uncertain
- ↑ Tinney 1996
- ↑ Research Consortium on Nearby Starsek kalkulaturiko datuak dira jarraian aurki ditzakezuenak (RECONS).