BB Doradus

{{Short description|Cataclysmic variable star in the constellation Dorado}}

{{Starbox begin

| name=BB Dor

}}

{{Starbox image

| image = 250px

| caption = A visual band light curve for BB Doradus, adapted from Rodríguez-Gil et al. (2012)

}}

{{Starbox observe

| epoch=J2000

| ra={{RA|05|29|28.66}}

| dec={{DEC|-58|54|46.7}}

| appmag_v=14.3-19.3

| constell=Dorado

}}

{{Starbox character

| class=WD + M3-4V

| b-v=

| u-b=

| variable=SW Sex

}}

{{Starbox astrometry

| radial_v=

| prop_mo_ra=

| prop_mo_dec=

| gal_lat=-33.4601

| gal_lon=267.4986

| parallax=1.0871

| p_error=0.0263

| absmag_v=15.52{{cite simbad |title=V* BB Dor|access-date=2020-11-22}}

}}

{{Starbox detail

| mass=

| radius=

| luminosity=

| temperature= 9365

| metal=

| gravity=

| rotation=

| age=

}}

{{Starbox catalog

| names= {{odlist | V=BB Dor | GSC=08530-00528 }}, AAVSO 0528-58, EC 05287-5857, 1RXS J0529-5854.

}}

{{Starbox reference

| Simbad=BB+Dor

}}

BB Doradus or BB Dor is a cataclysmic variable, a pre-nova star, thus a close pair binary star system. It is composed of a red dwarf and a white dwarf. Observations of the white dwarf's faint but certain accretion disk are consistent with it being at ~10° inclination (to the line of sight from the Earth).

Its parallax (movement against background stars due to the Earth's orbit around the Sun) given by the Gaia space observatory's second data release puts the pair at about 3,000 light years away.{{cite DR2|4760105592664097280}}

References

{{reflist|refs=

{{cite journal |last1=Rodríguez-Gil |first1=P. |last2=Schmidtobreick |first2=L. |last3=Long |first3=K. S. |last4=Gänsicke |first4=B. T. |last5=Torres |first5=M. A. P. |last6=Rubio-Díez |first6=M. M. |last7=Santander-García |first7=M. |title=The fight for accretion: discovery of intermittent mass transfer in BB Doradus in the low state |journal=Monthly Notices of the Royal Astronomical Society |date=May 2012 |volume=422 |issue=3 |pages=2332–2340 |doi=10.1111/j.1365-2966.2012.20783.x |doi-access=free |arxiv=1202.4921 |bibcode=2012MNRAS.422.2332R |s2cid=119211508 }}

{{cite conference

| title=The structure of BB Doradus in quiescence

| display-authors=1 | last1=Schmidtobreick | first1=L.

| last2=Rodríguez-Gil | first2=P. | last3=Long | first3=K. S.

| last4=Gänsicke | first4=B. T. | last5=Tappert | first5=C.

| conference=XIII Latin American Regional IAU Meeting

| editor1-first=W. J. | editor1-last=Henney

| editor2-first=S. | editor2-last=Torres-Peimbert

| journal=Revista Mexicana de Astronomía y Astrofísica

| volume=40 | page=288-288 | date=October 2011

| bibcode=2011RMxAC..40..288S }}

{{cite journal