Ross 614

{{Starbox begin

| name=Ross 614

}}

{{Starbox image

|image={{Location map|100x100|AlternativeMap=Monoceros_constellation_map.svg

|alt=Ross 614 is located in the constellation Monoceros.

|caption=Location of Ross 614 in the constellation Monoceros|border=infobox|mark=Red_pog.png|width=285

|label=Ross 614

|position=left

|lat=52.4

|long=58.7

}}|caption=

}}

{{Starbox observe 2s

| epoch=J2000

| constell=Monoceros

| component1 = CCDM J06294-0249 A

| ra1 = {{RA|06|29|23.401}}

| dec1 = {{DEC|-02|48|50.32}}

| appmag_v1 = 11.15

| component2 = CCDM J06294-0249 B

| ra2 = {{RA|06|29|23.52}}

| dec2 = {{DEC|-02|48|51.1}}

| appmag_v2 = 14.23

}}

{{Starbox character

| component1 = A

| class=M4.5V

| variable = Flare star (UV Cet)

| component2 = B

| class2 = M8V

| variable2 = Flare star (UV Cet)

}}

{{Starbox astrometry

| component1 = A

| radial_v= {{val|16.70|0.20}}

| prop_mo_ra = +750.14

| prop_mo_dec = −802.947

| pm_footnote =

| parallax = 242.9659

| p_error = 0.8833

| parallax_footnote =

| absmag_v = {{val|13.09|0.04}}

| component2 = B

| prop_mo_ra2 = +707

| prop_mo_dec2 = −703

| pm_footnote2 =

| absmag_v2 = {{val|16.17|0.06}}

}}

{{Starbox orbit

| reference =

| name =

| period = {{val|16.586|0.004}}

| axis = {{val|1.1012|0.0082}}

| axis_unitless = {{val|4.187|0.008|0.009|ul=AU}}

| eccentricity = {{val|0.382|0.0001}}

| inclination = {{val|52.918|0.016}}

| node = {{val|210.385|0.030|0.031}}

| periastron = {{val|2445226.863|3.020|3.043}}

| periarg = {{val|220.898|0.023}}

| k1 = {{val|2.201|0.016|0.025}}

}}

{{Starbox detail

| component1 = Ross 614 A

| mass = {{val|0.2228|0.0055}}

| radius = {{val|0.254|0.028}}

| gravity =

| luminosity = 0.007

| luminosity_visual =

| temperature = {{Val|3193|100|fmt=commas}}

| metal =

| rotation = {{val|p=≤|2.72|0.74|0.57}} days

| rotational_velocity = 4.73

| age =

| component2 = Ross 614 B

| mass_mj2 = {{val|94.837|0.880|1.370}}

| luminosity2 = 0.001

| radius2 = {{solar radius calculator|type=LT|0.001|3145|decimals=2}}{{efn|name=Radius for Ross 614B}}

| radius_km2 = {{convert|{{solar radius calculator|type=LT|0.001|3145|decimals=5}}|solar radius|km|sigfig=2|disp=number}}

| temperature2 = 3,145

}}

{{Starbox catalog

| names=Ross 614, CCDM J06294-0249, GJ 234, GCTP 1509.00, G 106-049, HIP 30920, LFT 473, LPM 239, LTT 2564, NLTT 16580, V577 Monocerotis

| component1=Ross 614 A

| names1=LHS 1849

| component2=Ross 614 B

| names2=LHS 1850

}}

{{Starbox reference

| Simbad = Ross+614|sn=The system

| Simbad2 = TYC+4789-3303-1|sn2=A

| Simbad3 = GJ+234+B|sn3=B

| ARICNS =

}}

Ross 614 (V577 Monocerotis) is a red dwarf UV Ceti flare star and it is the primary member of a nearby binary star system in the constellation of Monoceros. It is among the nearest stars at a measured distance of about 13.4 light years, but despite this close distance, is invisible to the naked eye, being of apparent magnitude 11. Because this star is so close to the Earth it is often the subject of study, hence the large number of designations by which it is known.

Binary star system

File:V577MonLightCurve.png light curve for V577 Monocerotis showing several flares, adapted from Pettersen and Sundland (1991)]]

This binary star system consists of two closely spaced low-mass red dwarfs. The secondary star is a dim magnitude 14 lost in the glare of the nearby primary star.

A study by George Gatewood in 2003 using older sources along with data from the Hipparcos satellite yielded an orbital period of about 16.6 years and a semi-major axis separation of about 1.1 arc seconds (2.4–5.3 AU). The most recent determination of the system orbital elements comes from a 2022 study combining data from radial velocity, astrometry, and imaging, which finds a similar orbital period, a semi-major axis of 4.2 AU, and a very low mass for the companion of {{Jupiter mass|94.8|link=y}}.

History

The primary star was discovered in 1927 by F. E. Ross using the {{convert|40|in|cm|abbr=on}} refractor telescope at the Yerkes Observatory. He noticed the high proper motion of this dim 11th magnitude star in his second-epoch plates that were part of an astronomical survey started by E. E. Barnard, his predecessor at the observatory. Ross then included this new star in his eponymous catalog along with many others he discovered.

The first detection of a binary system was in 1936 by Dirk Reuyl using the 26-in refractor telescope of the McCormick Observatory at the University of Virginia using astrometric analysis of photographic plates. In 1951 Sarah L. Lippincott made the first reasonably accurate predictions of the position of the secondary star using the {{convert|24|in|cm|abbr=on}} refractor telescope of the Sproul Observatory. These calculations were used by Walter Baade to find and optically resolve this binary system for the first time using the then new {{convert|5|m|in|abbr=on}} Hale Telescope at the Palomar Observatory in California.

Notes

{{notelist|notes=

{{Efn|name=Radius for Ross 614B|1=Calculated, using the Stefan-Boltzmann law and the star's effective temperature and luminosity, with respect to the solar nominal effective temperature of {{val|fmt=commas|5,772|ul=K}}: $\sqrt{\biggl(\frac{5,772}{3,145}\biggr)^4 \cdot 0.001} = 0.11\ R_\odot.$ }}

}}

References

{{Reflist|30em|refs=

{{cite journal

| title=An Astrometric Study of the Low-Mass Binary Star Ross 614

| author=George Gatewood

| author-link=George Gatewood

| display-authors=etal

| url=http://www.iop.org/EJ/article/1538-3881/125/3/1530/202454.web.pdf?request-id=b6f1cb86-b810-4d37-8eb5-4adea768585d

| date=2003

| journal=The Astronomical Journal

| volume=125

| issue=3

| pages=1530–1536

| doi=10.1086/346143

| bibcode=2003AJ....125.1530G

| s2cid=119597659

| access-date=2009-06-03

| archive-date=2021-12-19

| archive-url=https://web.archive.org/web/20211219130826/https://www.iop.org/EJ/article/1538-3881/125/3/1530/202454.web.pdf?request-id=b6f1cb86-b810-4d37-8eb5-4adea768585d

| url-status=dead

}}

{{Cite journal |last1=Houdebine |first1=E. R. |last2=Mullan |first2=D. J. |last3=Paletou |first3=F. |last4=Gebran |first4=M. |date=May 2016 |title=Rotation-Activity Correlations in K and M Dwarfs. I. Stellar Parameters and Compilations of v sin I and P/sin I for a Large Sample of Late-K and M Dwarfs |journal=The Astrophysical Journal |language=en |volume=822 |issue=2 |pages=97 |doi=10.3847/0004-637X/822/2/97 |doi-access=free |arxiv=1604.07920 |bibcode=2016ApJ...822...97H |issn=0004-637X}}

{{cite journal |last1=Feng |first1=Fabo |last2=Butler |first2=R. Paul |display-authors=etal |date=August 2022 |title=3D Selection of 167 Substellar Companions to Nearby Stars |journal=The Astrophysical Journal Supplement Series |volume=262 |issue=21 |page=21 |doi=10.3847/1538-4365/ac7e57 |arxiv=2208.12720 |bibcode=2022ApJS..262...21F |s2cid=251864022 |doi-access=free }}

{{Cite journal |last1=Eggl |first1=S. |last2=Pilat-Lohinger |first2=E. |last3=Funk |first3=B. |last4=Georgakarakos |first4=N. |last5=Haghighipour |first5=N. |date=2013-02-01 |title=Circumstellar habitable zones of binary-star systems in the solar neighbourhood |bibcode=2013MNRAS.428.3104E |journal=Monthly Notices of the Royal Astronomical Society |volume=428 |issue=4 |pages=3104–3113 |doi=10.1093/mnras/sts257 |doi-access=free |arxiv=1210.5411 |issn=0035-8711}}

{{cite web

| title=GCVS Query=V577 Mon

| url=http://www.sai.msu.su/groups/cluster/gcvs/cgi-bin/search.cgi?search=V577+Mon

| publisher=Centre de Données astronomiques de Strasbourg

| work=General Catalog of Variable Stars

| access-date=2009-06-02}}

{{cite journal |last1=Pettersen |first1=B. R. |last2=Sundland |first2=S. R. |title=The flare activity of V 577 Monocerotis |journal=Astronomy and Astrophysics Supplement Series |date=February 1991 |volume=87 |pages=303–308 |bibcode=1991A&AS...87..303P |url=https://ui.adsabs.harvard.edu/abs/1991A&AS...87..303P |access-date=29 January 2022}}

{{cite simbad

| title =LHS 1850

| access-date=2009-06-02}}

{{ cite journal

| title=Variable proper motion of Ross 614

| author=Reuyl, Dirk

| journal=The Astronomical Journal

| volume=45 | issue=1050 | pages=133–135

|date=July 1936 | doi=10.1086/105356

| bibcode=1936AJ.....45..133R}}

{{cite simbad

| title =V* V577 Mon