WASP-72

{{Starbox begin

| name = WASP-72 / Diya

}}

{{Starbox observe

| epoch = J2000.0

| constell = Fornax

| ra = {{RA|02|44|09.60960}}

| dec = {{DEC|-30|10|08.5637}}

| appmag_v = 10.96

}}

{{Starbox character

| type =

| class = F7

| appmag_1_passband = B

| appmag_1 = 11.454

| appmag_2_passband = R

| appmag_2 = 10.47

| appmag_3_passband = I

| appmag_3 = 10.428

| variable =

}}

{{Starbox astrometry

| radial_v = {{val|36.20|0.31}}

| prop_mo_ra = +7.614

| prop_mo_dec = −7.673

| pm_footnote =

| parallax = 2.3889

| p_error = 0.0252

| parallax_footnote =

| absmag_v =

}}

{{Starbox orbit

| reference =

| primary = WASP-72

| name = WASP-72B

| period =

| period_unitless =

| axis = 0.639{{±|0.003}}

| axis_unitless = 281 AU

| eccentricity =

| inclination =

| node =

| periastron =

| periarg =

| periarg_primary =

| k1 =

| k2 =

}}

{{Starbox detail

| source =

| component1 = WASP-72

| mass = {{val|1.386|0.055}}

| radius = {{val|1.98|0.24}}

| luminosity = {{val|5.3|1.5|1.3}}

| gravity = {{val|4.08|0.13}}

| temperature = {{val|6250|100}}

| metal_fe = {{val|−0.06|0.09}}

| rotation =

| rotational_velocity = {{val|6.0|0.7}}

| age_gyr = 3.55{{±|0.82}}

| component2 = WASP-72B

| mass2 = 0.66{{±|0.02}}

| temperature2 = 4234{{±|80|81}}

}}

{{Starbox catalog

| names = {{odlist | name=Diya | 2MASS=J02440959-3010085 | CD=-30 1019 | TIC=122612091 | TOI=264 | TYC=7011-487-1 | WASP=72}}

}}

{{Starbox reference

| Simbad = WASP-72

| NSTED = WASP-72

}}

WASP-72 (also known as CD-30 1019 and officially named Diya) is the primary of a binary star system. It is an F7 class dwarf star, with an internal structure just on the verge of the Kraft break. It is orbited by a planet, WASP-72b. The age of WASP-72 is younger than the Sun at 3.55{{±|0.82}} billion years.

The primary seems to have UV-opaque matter in the line-of-sight, which may originate from atmosphere escaping from WASP-72b or from an unknown object in the interstellar medium.[https://ieeexplore.ieee.org/document/8185421 SALT observations of the chromosphere activity of transiting planet hosts: mass-loss and star–planet interactions] WASP-72 was named Diya in 2019.

A faint stellar companion WASP-72B was discovered in 2020 at a projected separation of 281 AU. It may still be a false positive, with a probability of 0.02%.

Planetary system

The transiting hot Jupiter exoplanet orbiting WASP-72 was discovered by WASP in 2012. The planetary orbit is well aligned to the equatorial plane of the star, with misalignment equal to {{val|−7|11|12|u=°}}. Despite the close proximity of the planet to the parent star, orbital decay was not detected as of 2020.{{citation|arxiv=2002.02606|title=The continuing search for evidence of tidal orbital decay of hot Jupiters|year=2020|doi=10.3847/1538-3881/ab7374|last1=Patra|first1=Kishore C.|last2=Winn|first2=Joshua N.|last3=Holman|first3=Matthew J.|last4=Gillon|first4=Michael|last5=Burdanov|first5=Artem|last6=Jehin|first6=Emmanuel|last7=Delrez|first7=Laetitia|last8=Pozuelos|first8=Francisco J.|last9=Barkaoui|first9=Khalid|last10=Benkhaldoun|first10=Zouhair|last11=Narita|first11=Norio|last12=Fukui|first12=Akihiko|last13=Kusakabe|first13=Nobuhiko|last14=Kawauchi|first14=Kiyoe|last15=Terada|first15=Yuka|last16=Bouma|first16=L. G.|last17=Weinberg|first17=Nevin N.|last18=Broome|first18=Madelyn|journal=The Astronomical Journal|volume=159|issue=4|page=150|bibcode=2020AJ....159..150P|s2cid=211066260 |doi-access=free }} The planetary equilibrium temperature is 2210{{±|120|130}} K, compatible with the measured dayside temperature of 2098{{±|335|364}} K.

WASP-72b was named "Cuptor" in 2019 by Mauritian amateur astronomers as part of the NameExoWorlds contest.{{Cite web

|url=http://www.nameexoworlds.iau.org/methodology

|title=Methodology {{!}} IAU100 Name ExoWorlds - An IAU100 Global Event

|access-date=2020-11-10 |website=Name Exoworlds |publisher=International Astronomical Union|language=en}}

{{OrbitboxPlanet begin

| name = WASP-72

| table_ref =

}}

{{OrbitboxPlanet

| exoplanet = b / Cuptor

| mass = {{val|1.446|0.054|0.053}}

| semimajor = {{val|0.03711|0.00048|0.00051}}

| period = {{val|2.2167421|(81)}}

| eccentricity = <0.017

| inclination = {{val|79.9|1.6|1.3}}

| radius = {{val|1.24|0.15}}

}}

References

{{Reflist|refs=

{{citation|arxiv=1210.4257|title=WASP-64b and WASP-72b: two new transiting highly irradiated giant planets|year=2012|doi=10.1051/0004-6361/201220561|last1=Gillon|first1=M.|last2=Anderson|first2=D. R.|last3=Collier-Cameron|first3=A.|last4=Doyle|first4=A. P.|last5=Fumel|first5=A.|last6=Hellier|first6=C.|last7=Jehin|first7=E.|last8=Lendl|first8=M.|last9=Maxted|first9=P. F. L.|last10=Montalban|first10=J.|last11=Pepe|first11=F.|last12=Pollacco|first12=D.|last13=Queloz|first13=D.|last14=Segransan|first14=D.|last15=Smith|first15=A. M. S.|last16=Smalley|first16=B.|last17=Southworth|first17=J.|last18=Triaud|first18=A. H. M. J.|last19=Udry|first19=S.|last20=West|first20=R. G.|journal=Astronomy & Astrophysics |volume=552 |pages=A82 |bibcode=2013A&A...552A..82G |s2cid=53687206}}

{{cite journal |last1=Bonomo |first1=A. S. |last2=Desidera |first2=S. |display-authors=etal |date=June 2017 |title=The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets |journal=Astronomy & Astrophysics |volume=602 |issue= |pages=A107 |doi=10.1051/0004-6361/201629882 |arxiv=1704.00373 |bibcode=2017A&A...602A.107B |s2cid=118923163}}

{{citation|arxiv=1809.00314|title=Stellar Obliquities and Planetary Alignments (SOPA). I. Spin-orbit measurements of three transiting hot Jupiters: WASP-72b, WASP-100b, and WASP-109b|year=2018|doi=10.3847/1538-3881/aade91|last1=Addison|first1=B. C.|last2=Wang|first2=Songhu|last3=Johnson|first3=M. C.|last4=Tinney|first4=C. G.|last5=Wright|first5=D. J.|last6=Bayliss|first6=D.|journal=The Astronomical Journal|volume=156|issue=5|page=197|bibcode=2018AJ....156..197A|s2cid=67819738 |doi-access=free }}

{{citation|arxiv=2001.08224|title=A multiplicity study of transiting exoplanet host stars. I. High-contrast imaging with VLT/SPHERE|year=2020|doi=10.1051/0004-6361/201937127|last1=Bohn|first1=A. J.|last2=Southworth|first2=J.|last3=Ginski|first3=C.|last4=Kenworthy|first4=M. A.|last5=Maxted|first5=P. F. L.|last6=Evans|first6=D. F.|journal=Astronomy & Astrophysics|volume=635|pages=A73|bibcode=2020A&A...635A..73B|s2cid=210861118}}

{{citation|arxiv=2003.06407|title=Systematic phase curve study of known transiting systems from year one of the TESS mission|year=2020|doi=10.3847/1538-3881/ababad|last1=Wong|first1=Ian|last2=Shporer|first2=Avi|last3=Daylan|first3=Tansu|last4=Benneke|first4=Björn|last5=Fetherolf|first5=Tara|last6=Kane|first6=Stephen R.|last7=Ricker|first7=George R.|last8=Vanderspek|first8=Roland|last9=Latham|first9=David W.|last10=Winn|first10=Joshua N.|last11=Jenkins|first11=Jon M.|last12=Boyd|first12=Patricia T.|last13=Glidden|first13=Ana|last14=Goeke|first14=Robert F.|last15=Sha|first15=Lizhou|last16=Ting|first16=Eric B.|last17=Yahalomi|first17=Daniel|journal=The Astronomical Journal|volume=160|issue=4|page=155|bibcode=2020AJ....160..155W|s2cid=212717799 |doi-access=free }}

{{citation|arxiv=2103.15833|year=2021|title=Trends in Spitzer Secondary Eclipses|doi=10.3847/1538-3881/abdbb2|last1=Wallack|first1=Nicole L.|last2=Knutson|first2=Heather A.|last3=Deming|first3=Drake|journal=The Astronomical Journal|volume=162|issue=1|page=36|bibcode=2021AJ....162...36W|s2cid=232417602 |doi-access=free }}

}}

Category:F-type subgiants

Category:Planetary systems with one confirmed planet

Category:Binary stars

Category:Planetary transit variables