72 Tauri

{{Starbox image

| image=

{{Location mark

|image=Taurus constellation map.svg|alt=|float=center|width=240

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=72 Tauri

|x=552|y=360

}}

|caption=Location of 72 Tauri (circled)

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Taurus

| ra = {{RA|04|27|17.4508}}

| dec = {{DEC|+22|59|46.778}}

| appmag_v = 5.514

}}

{{Starbox character

| type = main sequence

| class = B7V

| b-v = −0.10

| u-b = −0.48

}}

{{Starbox astrometry

| radial_v = {{Val|32.2|1.1}}

| prop_mo_ra = −1.409

| prop_mo_dec = −13.722

| parallax = 7.9390

| p_error = 0.398

| parallax_footnote =

| absmag_v = +0.21

}}

{{Starbox detail

| mass = 3.47

| radius = 2.8

| luminosity = 185

| temperature = 12,689

| gravity = 3.97

| metal_fe =

| rotational_velocity = 115

| age_myr = 38

}}

{{Starbox catalog

| names = {{odlist | B=υ² Tau | F=72 Tauri | BD=+22°699 | HD=28149 | HIP=20789 | HR=1399 }}

}}

{{Starbox reference

| Simbad = 72+Tau

}}

72 Tauri (abbreviated 72 Tau) is a possible binary star in the zodiac constellation of Taurus. It is faintly visible to the naked eye with an apparent visual magnitude of +5.5, although only 0.29° from the brighter υ Tauri. Based upon an annual parallax shift of {{val|7.9|ul=mas}} seen from Earth, it is around 410 light years from the Sun.

Properties

72 Tauri is a B-type main sequence star with a stellar classification of B7V. With a mass of {{solar mass|3.48|link=y}} and an estimated age of 38 million years, it is 2.8 times the size of the Sun and 185 times its luminosity.

Occasionally this star system is given the Bayer designation υ² Tauri with υ Tauri, which is separated from it by 0.29° in the sky. υ Tauri is a foreground star, the two are unrelated, and although 72 Tauri lies near the Hyades open cluster, it is much further away.

72 Tauri lies near the ecliptic and can be occulted by the moon. Observations of an occultation in 1985 showed that it was a binary star with the two components separated by {{val|0.1|ul="}}. There has been no confirmation of this finding and other sources list the star as single.

References

{{reflist|refs=

{{cite journal|title=The Tycho-2 catalogue of the 2.5 million brightest stars|author1=Høg, E.|display-authors=etal|date=2000|journal=Astronomy and Astrophysics|volume=355|pages=L27–L30|bibcode=2000A&A...355L..27H}}

{{cite book |last1=Hoffleit |first1=D. |last2=Jaschek |first2=C. |year=1991 |title=The Bright Star Catalogue |location=New Haven |publisher=Yale University Observatory |bibcode=1991bsc..book.....H}}

{{cite journal |last1=Gontcharov |first1=G. A. |title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system |journal=Astronomy Letters |date=November 2006 |volume=32 |issue=11 |pages=759–771 |doi=10.1134/S1063773706110065 |issn=1063-7737 |bibcode=2006AstL...32..759G |arxiv=1606.08053|s2cid=119231169 }}

{{cite journal|bibcode=2004yCat.4027....0K|title=VizieR Online Data Catalog: HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index (Kostjuk, 2002)|journal=VizieR On-line Data Catalog: IV/27A. Originally Published in: Institute of Astronomy of Russian Academy of Sciences (2002)|volume=4027|last1=Kostjuk|first1=N. D.|year=2004}}

{{cite journal

| title=B- and A-type Stars in the Taurus-Auriga Star-forming Region

| display-authors=1 | last1=Mooley | first1=Kunal

| last2=Hillenbrand | first2=Lynne | last3=Rebull | first3=Luisa

| last4=Padgett | first4=Deborah | last5=Knapp | first5=Gillian

| journal=The Astrophysical Journal

| arxiv=1306.0598 | bibcode=2013ApJ...771..110M

| doi=10.1088/0004-637X/771/2/110 | s2cid=2176170 }}

{{cite journal | last1 = Gullikson | first1 = Kevin | last2 = Kraus | first2 = Adam | last3 = Dodson-Robinson | first3 = Sarah | title = The Close Companion Mass-ratio Distribution of Intermediate-mass Stars | journal = The Astronomical Journal | date = 25 July 2016 | volume = 152 | issue = 2 | page = 40 | eissn = 1538-3881 | doi = 10.3847/0004-6256/152/2/40 | bibcode = 2016AJ....152...40G | arxiv = 1604.06456 | doi-access = free}}

{{cite journal

| title=High Ionization Species in the Nearby Interstellar Medium from an Exhaustive Analysis of the IUE INES Database

| last1=Freire Ferrero | first1=R. | last2=Morales Durán | first2=C.

| last3=Halbwachs | first3=J.-L. | last4=Cabo Cubeiro | first4=A. M.

| journal=The Astronomical Journal | display-authors=1

| doi=10.1088/0004-6256/143/2/28 | bibcode=2012AJ....143...28F | doi-access=free }}

{{cite journal

| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.

| title=A catalogue of multiplicity among bright stellar systems

| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869–879 | date=September 2008

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E

| arxiv=0806.2878 | s2cid=14878976 }}

{{cite journal

| title=XHIP: An extended hipparcos compilation

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012

| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015

| arxiv=1108.4971 | s2cid=119257644 }}

{{cite journal |bibcode=1987AcASn..28...39Q |title=The measurements of stellar angular diameter by photoelectric observation of lunar occultation |last1=Qian |first1=B. -C |last2=Zhu |first2=G. -L. |last3=Fan |first3=Q. -Y. |journal=Acta Astronomica Sinica |year=1987 |volume=28 |page=45 }}

{{cite simbad

| title=72 Tau | access-date=2017-08-05 }}

}}

Category:B-type main-sequence stars

Tauri, Upsilon

Category:Taurus (constellation)

Category:Durchmusterung objects