R Virginis

R Virginis
	; The visual band light curve of R Virginis, from AAVSO data
Observation data; Epoch J2000 Equinox J2000
Constellation	Virgo
Right ascension	12h 38m 29.9338s
Declination	+06° 59′ 19.0256″
Apparent magnitude (V)	6.1 - 12.1
Characteristics
Spectral type	M3.5-7e
U−B color index	1.22
B−V color index	1.56
Variable type	Mira
Astrometry
Radial velocity (Rv)	−26.60 km/s
Proper motion (μ)	RA: −32.283±0.248 mas/yr ; Dec.: 4.483±0.186 mas/yr
Parallax (π)	1.8884±0.0946 mas
Distance	1,730 ± 90 ly ; (530 ± 30 pc)
Details
Mass	2.18 M☉
Radius	130 R☉
Surface gravity (log g)	0.44 cgs
Temperature	3,300–3,800 K
Metallicity [Fe/H]	+0.49 dex
Other designations
	R Virginis, TYC 295-2-1, AG+07°1658, HD 109914, BD+07°2561, DO 3264, HIP 61667, GC 17212, HR 4808, RAFGL 4157, SAO 119509
Database references
SIMBAD	data

R Virginis is a Mira variable in the constellation Virgo. Located approximately 530 parsecs (1,700 ly) distant, it varies between magnitudes 6.1 and 12.1 over a period of approximately 146 days.^[3] Its variable nature was discovered by Karl Ludwig Harding in 1809.^[9]

References

^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
^ ^a ^b ^c ^d ^e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ ^a ^b ^c VSX (4 January 2010). "R Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.
^ Keenan, Philip C.; Garrison, Robert F.; Deutsch, Armin J. (1974). "Revised Catalog of Spectra of Mira Variables of Types ME and Se". The Astrophysical Journal Supplement Series. 28: 271. Bibcode:1974ApJS...28..271K. doi:10.1086/190318.
^ ^a ^b Ducati, J. R. (2002). "VizieR On-line Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". VizieR On-line Data Catalog. Bibcode:2002yCat.2237....0D.
^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
^ ^a ^b ^c ^d Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardèvol, J.; Casamiquela, L.; Figueras, F.; Jiménez-Arranz, Ó.; Jordi, C.; Monguió, M.; Romero-Gómez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T. (2022-02-01). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy and Astrophysics. 658: A91. arXiv:2111.01860. Bibcode:2022A&A...658A..91A. doi:10.1051/0004-6361/202142369. ISSN 0004-6361.
^ ^a ^b Eisner, J. A.; Graham, J. R.; Akeson, R. L.; Ligon, E. R.; Colavita, M. M.; Basri, G.; Summers, K.; Ragland, S.; Booth, A. (2006-12-07). "Stellar and Molecular Radii of a Mira Star: First Observations with the Keck Interferometer Grism". The Astrophysical Journal. 654 (1): L77. arXiv:astro-ph/0611312. doi:10.1086/510717. ISSN 0004-637X.
^ Zsoldos, E. (1994). "Three Early Variable Star Catalogues". Journal for the History of Astronomy. 25 (2): 92–98. Bibcode:1994JHA....25...92Z. doi:10.1177/002182869402500202. S2CID 117099222.

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[aavso-1] "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.

[Gaia_DR2-2] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[AAVSO-3] VSX (4 January 2010). "R Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.

[keenan-4] Keenan, Philip C.; Garrison, Robert F.; Deutsch, Armin J. (1974). "Revised Catalog of Spectra of Mira Variables of Types ME and Se". The Astrophysical Journal Supplement Series. 28: 271. Bibcode:1974ApJS...28..271K. doi:10.1086/190318.

[ubv-5] Ducati, J. R. (2002). "VizieR On-line Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". VizieR On-line Data Catalog. Bibcode:2002yCat.2237....0D.

[pulkovo-6] Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.

[Anders2022-7] Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardèvol, J.; Casamiquela, L.; Figueras, F.; Jiménez-Arranz, Ó.; Jordi, C.; Monguió, M.; Romero-Gómez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T. (2022-02-01). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy and Astrophysics. 658: A91. arXiv:2111.01860. Bibcode:2022A&A...658A..91A. doi:10.1051/0004-6361/202142369. ISSN 0004-6361.

[Eisner2006-8] Eisner, J. A.; Graham, J. R.; Akeson, R. L.; Ligon, E. R.; Colavita, M. M.; Basri, G.; Summers, K.; Ragland, S.; Booth, A. (2006-12-07). "Stellar and Molecular Radii of a Mira Star: First Observations with the Keck Interferometer Grism". The Astrophysical Journal. 654 (1): L77. arXiv:astro-ph/0611312. doi:10.1086/510717. ISSN 0004-637X.

[Zsoldos1994-9] Zsoldos, E. (1994). "Three Early Variable Star Catalogues". Journal for the History of Astronomy. 25 (2): 92–98. Bibcode:1994JHA....25...92Z. doi:10.1177/002182869402500202. S2CID 117099222.

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R Virginis

References

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