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Find the constellation

"Constellation finder".

Multiplicity

"Updated multiple star catalogue".

Variability

"Catalogue of variable stars".

Hipparcos & Gaia catalogues

"Hipparcos final catalogue".

"Gaia DR2 all".

PASTEL

Soubiran, Caroline; et al. (2016), "The PASTEL catalogue: 2016 version", Astronomy & Astrophysics, 591: A118, arXiv:1605.07384, Bibcode:2016A&A...591A.118S, doi:10.1051/0004-6361/201628497.

TYCHO Catalog

Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H.

Radial velocity

de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, A61.

2MASS

Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; et al. (June 2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues (2246): II/246. Bibcode:2003yCat.2246....0C.

Simbad & GAIA templates

"26 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 25, 2018.

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.

Andromeda Template

Pages for deletion

U Andromedae

SU Andromedae

V385 Andromedae

HR 1

HR 687

HD 221246

Move

S Andromedae is SN 1885A

Pages proposals

UU Andromedae Algol with mass loss

WW Andromedae Algol with accretion disc

WY Andromedae Metal-poor supergiant

WZ Andromedae Contact system

XY Andromedae RR Lyrae with more frequencies

XZ Andromedae Algol

AB Andromedae Contact binary

AC Andromedae RR Lyrae

AD Andromedae Eclipsing with a third body

AF Andromedae Luminous Blue Variable in Andromeda Galaxy

AP Andromedae Algol variable

AQ Andromedae Carbon star

AR Andromedae Dwarf Nova

AT Andromedae RR Lyrae

BD Andromedae Uncertain kind

BL Andromedae Close binary

BM Andromedae T-Tauri variable

BX Andromedae Eclipsing binary

CC Andromedae Delta scuti variable with more frequencies

CN Andromedae Contact binary?

CO Andromedae Triple eclipsing

DR Andromedae RR Lyrae

DS Andromedae Eclipsing binary in open cluster

DX Andromedae Dwarf nova

DZ Andromedae Uncertain kind

EG Andromedae Symbiotic variable

EP Andromedae Contact binary

EU Andromedae Carbon star

FF Andromedae Red dwarf

FS Andromedae Dwarf nova

GP Andromedae Delta scuti variable

GR Andromedae Alpha2 Cvn variable

GV Andromedae RR Lyrae variable

GZ Andromedae Peculiar contact binary

HN Andromedae Alpha2 Cvn variable

HQ Andromedae Nova, CV, else (?)

HV Andromedae Magnetic CV

IO Andromedae Quasar mistaken for a star (?)

IW Andromedae Unusual Z Cam type star

KV Andromedae Dwarf Nova (?)

KX Andromedae Be variable star

KZ Andromedae BY Dra variable

LL Andromedae CV with a brown dwarf

LP Andromedae Carbon star

LQ Andromedae Has an HR identifier

LR Andromedae Binary star

LS Andromedae Nova?

LX Andromedae Proto-planetary nebula?

LY Andromedae Eclipsing binary

OR Andromedae CV, deserves an article (?)

OS Andromedae Nova

OT Andromedae Algol variable

PQ Andromedae Dwarf Nova

PT Andromedae Nova (probably in M31)

PW Andromedae RS Cvn variable

PX Andromedae CV

QR Andromedae Algol variable with supersoft X-ray emission

QU Andromedae RS Cvn variable

QV Andromedae Has an HR identifier

QX Andromedae "Overcontact binary"

V357 Andromedae Has an HR identifier

V361 Andromedae Delta Scuti variable

V370 Andromedae AGB burning He

V371 Andromedae Variable BY Dra

V376 Andromedae Eclipsing binary

V378 Andromedae Has an HR identifier

V404 Andromedae Algol with magnetic activity

V405 Andromedae M-dwarf binary

V409 Andromedae White dwarf

V419 Andromedae Am star with pulsations

V429 Andromedae Pulsating hot subdwarf

V436 Andromedae Slow Alpha2 CVn variable

V442 Andromedae Be star

V450 Andromedae Variable with planet

V454 Andromedae Has an HR identifier

V455 Andromedae Dwarf nova

V466 Andromedae Dwarf nova

V470 Andromedae Has an HR identifier

V479 Andromedae CV with "identity crisis"

V515 Andromedae DQ Her variable (intermediate polar)

V537 Andromedae Algol variable with orbit

V546 Andromedae W UMa variable with orbit

V572 Andromedae Dwarf nova

HD 8375 Triple star

HR 551 Spectroscopic binary

HR 647 Double star

HR 768 Multiple star?

HR 8857 Variability?

HR 9053 An article

HR 9057 An article

HD 14633 Articles

HD 218915 Blue supergiant

HD 222155 Planet

Article model

FF Andromedae (often abbreviated to FF And) is a spectroscopic binary in the constellation Andromeda. It has a typical apparent visual magnitude of 12.9, but undergoes flare events that can increase its brightness up to a 12.0 magnitude.

System

Both stars in the FF Andromedae system are main sequence red dwarfs of spectral type M1Ve, meaning that the spectrum shows strong emission lines.

The secondary component should not be confused with the star listed in the Washington Double Star Catalog as WDS J00428+3533B and in the Gliese-Jahreiss catalogue as GJ 29.1B, which is just a visual companion star situated at a much further distance than FF Andromedae.

Spectrum

Variability

FF Andromedae shows a regular variability withing a rotation period, typical of BY Draconis variable stars, but occasionally increases its brightness in a stellar flare. Small amplitude variations, at the timescale of several minutes, were also reported.

References

1. ^ 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.
2. ^ N. N. Samus; O. V. Durlevich; et al. "FF And database entry". Combined General Catalog of Variable Stars (2017 ed.). CDS. Retrieved 2018-11-12.
3. "FF And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 6, 2018.
4. ^ Database entry, VizieR Online Data Catalog: UCAC4 Catalogue (Zacharias+, 2012), N. Zacharias et al., CDS ID I/322A Accessed on line 2018-11-06.
5. Database entry, VizieR Online Data Catalog: The USNO-B1.0 Catalog (Monet+ 2003), D. G. Monet et al., CDS ID I/284 Accessed on line 2018-11-06.
6. ^ Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; et al. (June 2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues (2246): II/246. Bibcode:2003yCat.2246....0C.
7. de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, A61.
8. Houdebine, E. R. (August 2009). "Observation and modelling of main-sequence star chromospheres - XII. Two-component model chromospheres for five active dM1e stars". Monthly Notices of the Royal Astronomical Society. 397 (4): 2133–2147. Bibcode:2009MNRAS.397.2133H. doi:10.1111/j.1365-2966.2009.15112.x.{{cite journal}}: CS1 maint: unflagged free DOI (link)
9. "GJ 29.1 B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 6, 2018.
10. Peres, G.; Ventura, R.; Pagano, I.; Rodono, M. (1993), "Low amplitude variability and transient periodicity in FF Andromedae and other active stars.", Astronomy & Astrophysics, 278: 179–186, Bibcode:1993A&A...278..179P.

v t e Constellation of Andromeda
Adhil Andromeda in Chinese astronomy List of Andromeda's satellite galaxies List of stars in Andromeda
Stars	Bayer α (Alpheratz) β (Mirach) γ (Almach) δ ε ζ η θ ι κ λ μ ν ξ (Adhil) ο π ρ σ τ υ (Titawin) φ χ ψ ω A b c υ Per (Nembus) Flamsteed 2 3 4 5 6 7 8 9 10 11 12 13 14 (Veritate) 15 18 22 23 26 28 32 36 39 41 44 45 47 55 56 58 59 63 64 65 66 6 Per Variable R T U W Z RT RV RX SU SW TU TW WZ XZ AB AC AD AE AF AR BM BX CC CG CN DS DX EG ET EU FF GO GP GQ GX GR GY HH HN IW KK KX KZ LL LN LP LQ OP OS OU PX PY QR QV QX V385 V428 V439 V455 V529 V807 HR 1 40 56 78 104 122 134 178 275 282 283 289 379 410 483 687 746 748 8884 8925 8950 8962 8973 9011 9074 9075 9105 HD 16175 (Buna) 222155 Other 3XMM J004232.1+411314 ADS 48 HAT-P-6 (Sterrennacht) HAT-P-16 HAT-P-19 HAT-P-28 M31-RV KELT-1 NGC 44 NGC 82 NGC 84 NGC 91 NGC 162 NGC 464 Qatar-3 Qatar-4 Qatar-5 PA-99-N2 WASP-1 WISE 0146+4234 WISE J0005+3737 WISE J004945.61+215120.0
Exoplanets 14 Andromedae b κ Andromedae b υ Andromedae b c d Gliese 15 Ab c HD 13931 b HD 16175 b HAT-P-6b HAT-P-32b WASP-1b WASP-33b Qatar-4b Qatar-5b
Star clusters	NGC 206 272 752 956 7686 Other Mayall II RBC EXT8
Nebulae	NGC 7662
Galaxies	Messier 32 110 NGC 5 11 13 19 20 21 27 39 43 48 49 51 67 68 69 70 71 72 74 76 79 80 81 83 85 86 90 93 94 96 97 108 109 112 140 149 160 169 181 183 184 214 218 226 228 229 233 243 252 258 260 262 280 304 317 389 393 404 425 431 477 512 513 523 528 529 531 536 542 561 605 620 668 679 687 700 703 704 705 708 709 710 712 714 717 721 732 753 759 801 812 834 891 906 910 911 912 913 920 937 980 995 996 999 1000 7640 7836 Numbered I II III IV V VIII IX X XI XVIII XIX XXI Other 3C 66A 3C 66B Andromeda Galaxy Arp 273 Donatiello I UGC 1840
Galaxy clusters Abell 262 NGC 68 group
Astronomical events GRB 101225A SN 1885A (S)
Category