astro.wikisort.org - Starν Virginis, Latinized as Nu Virginis, is a single[9] star in the zodiac constellation of Virgo, located at the western tip of the classic constellation and nearly due south of the prominent star Denebola.[10] It is a red-hued star with an apparent visual magnitude of 4.04[2] and can be seen with the naked eye. Because the star lies near the ecliptic it is subject to occultations by the Moon.[11] Parallax measurements provide an estimated distance of around 294 light years from the Sun,[1] and it is drifting further away with a radial velocity of +50 km/s.[5]
Variable star in the constellation Virgo
ν Virginis
Location of ν Virginis (circled) |
Observation data Epoch J2000.0 Equinox J2000.0 |
Constellation |
Virgo |
Right ascension |
11h 45m 51.55957s[1] |
Declination |
+06° 31′ 45.7413″[1] |
Apparent magnitude (V) |
4.04[2] |
Characteristics |
Evolutionary stage |
asymptotic giant branch[3] |
Spectral type |
M1 III[4] |
U−B color index |
+1.80[2] |
B−V color index |
+1.52[2] |
Astrometry |
---|
|
---|
Radial velocity (Rv) | 50.19±0.30[5] km/s |
Proper motion (μ) | RA: −18.96[1] mas/yr Dec.: −181.56[1] mas/yr |
Parallax (π) | 11.10 ± 0.18 mas[1] |
Distance | 294 ± 5 ly (90 ± 1 pc) |
Absolute magnitude (MV) | −0.87[6] |
|
Details |
---|
|
---|
Mass | 1.6[7] M☉ |
Radius | 54[5] R☉ |
Luminosity | 631[5] L☉ |
Surface gravity (log g) | 1.0[5] cgs |
Temperature | 4,009[5] K |
Metallicity [Fe/H] | 0.06[5] dex |
Rotational velocity (v sin i) | 3.8[5] km/s |
|
Other designations |
---|
|
Database references |
---|
SIMBAD | data |
This object is an M-type red giant, currently on the asymptotic giant branch,[3] with a stellar classification of M1 III.[4] It is an SRB-type[12] semiregular variable star with its brightness varying by 0.0125 in magnitude.[13] These variations have four periods lasting 11.1, 12.3, 16.8, and 23.7 days.[14] This star has about 1.6 times the mass of the sun, but it has expanded to 54 times the Sun's radius and shines 631 times as brightly as the Sun. The effective temperature of its outer atmosphere is 4,009 K.[7]
References
- van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
- Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.
- Eggen, Olin J. (July 1992), "Asymptotic giant branch stars near the sun", Astronomical Journal, 104 (1): 275–313, Bibcode:1992AJ....104..275E, doi:10.1086/116239.
- Morgan, W. W.; Keenan, P. C. (1973), "Spectral Classification", Annual Review of Astronomy and Astrophysics, 11: 29–50, Bibcode:1973ARA&A..11...29M, doi:10.1146/annurev.aa.11.090173.000333.
- Massarotti, Alessandro; et al. (January 2008), "Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209.
- Pace, G.; et al. (April 2003), "The Wilson-Bappu effect: A tool to determine stellar distances", Astronomy and Astrophysics, 401 (3): 997–1007, arXiv:astro-ph/0301637, Bibcode:2003A&A...401..997P, doi:10.1051/0004-6361:20030163, S2CID 17029463.
- Tsuji, Takashi (May 2007). "Isotopic abundances of Carbon and Oxygen in Oxygen-rich giant stars". In Kupka, F.; Roxburgh, I.; Chan, K. (eds.). Convection in Astrophysics, Proceedings of IAU Symposium #239 held 21-25 August, 2006 in Prague, Czech Republic. Proceedings of the International Astronomical Union. Vol. 2. pp. 307–310. arXiv:astro-ph/0610180. Bibcode:2007IAUS..239..307T. doi:10.1017/S1743921307000622.
- "* nu. Vir". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-09-08.
{{cite web}}
: CS1 maint: postscript (link) - Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- Kaler, James B., "Nu Virginis", STARS, retrieved 2019-10-06.
- White, Nathaniel M.; Feierman, Barry H. (September 1987), "A Catalog of Stellar Angular Diameters Measured by Lunar Occultation", Astronomical Journal, 94: 751, Bibcode:1987AJ.....94..751W, doi:10.1086/114513.
- Kazarovets, E. V.; et al. (1999), "The 74th Special Name-list of Variable Stars", Information Bulletin on Variable Stars, 4659 (4659): 1, Bibcode:1999IBVS.4659....1K.
- Koen, Chris; Eyer, Laurent (March 2002). "New periodic variables from the Hipparcos epoch photometry". Monthly Notices of the Royal Astronomical Society. 331 (1): 45–59. arXiv:astro-ph/0112194. Bibcode:2002MNRAS.331...45K. doi:10.1046/j.1365-8711.2002.05150.x. S2CID 10505995.
- Tabur, V.; et al. (December 2009), "Long-term photometry and periods for 261 nearby pulsating M giants", Monthly Notices of the Royal Astronomical Society, 400 (4): 1945–1961, arXiv:0908.3228, Bibcode:2009MNRAS.400.1945T, doi:10.1111/j.1365-2966.2009.15588.x, S2CID 15358380.
Virgo constellation |
---|
Stars (list) | |
---|
Star clusters | |
---|
Nebulae | |
---|
Galaxies | Messier | |
---|
NGC | |
---|
Other |
- A1689-zD1
- Abell 1835 IR1916
- Arp 240 (NGC 5257 and NGC 5258)
- Arp 271 (NGC 5426 and NGC 5427)
- BR 1202-0725
- 3C 273
- 3C 279
- 3C 298
- 4C 04.42
- Eyes Galaxies
- GR 8
- IC 1011
- IC 1101
- IC 3258
- IC 3328
- IRAS 12212+0305
- IRAS 13197−1627
- M60-UCD1
- Markarian 50
- Markarian 1318
- PG 1216+069
- PG 1244+026
- PG 1254+047
- PG 1307+085
- PG 1416−129
- PG 1426+015
- PKS 1148-001
- PKS 1167+014
- PKS 1217+023
- PKS 1229−021
- PKS 1302−102
- PKS 1335−127
- PKS 1402+044
- PKS 1405−076
- QSO B1208+1011
- QSO B1243−072
- QSO B1246−057
- QSO B1331+170
- RXJ1242−11
- SMM J14011+0252
- UM 448
- UM 461
- UM 462
|
---|
|
---|
Galaxy clusters | |
---|
Other |
- GRB 930131
- GRB 030328
- GRB 050408
- GRB 050801
- GRB 080310
- North Polar Spur
- SN 1960F
- SN 1981B
- SN 1990B
- SN 1990N
- SN 1991T
- SN 1991bg
- SN 1994D
- SN 1999br
- SN 2002cx
- SN 2007bi
|
---|
На других языках
- [en] Nu Virginis
[es] Ni Virginis
Ni Virginis o Nu Virginis (ν Vir / 3 Virginis / HD 102212)[1] es una estrella en la constelación de Virgo de magnitud aparente +4,04. Se encuentra a unos 313 años luz del Sistema Solar.
[ru] Ню Девы
Ню Де́вы (ν Virginis, ν Vir) — переменная звезда в созвездии Девы. Красный гигант (спектральный класс M1 IIIab) с видимой звёздной величиной 4,04m (видна невооружённым глазом). Находится на расстоянии 294 ± 5 световых лет от Солнца. Относится к полуправильным переменным звёздам типа SRB[9][10], видимый блеск меняется на 0,0125 звёздной величины[11]. Были выделены четыре периода изменений блеска, равные 11,1, 12,3, 16,8 и 23,7 суток[12].
Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии