A giant planet transiting a 3-Myr protostar with a misaligned disk

被引：1

作者：

Barber, Madyson G. ^{[1
]}

Mann, Andrew W. ^{[1
]}

Vanderburg, Andrew ^{[2
,3
]}

Krolikowski, Daniel ^{[4
]}

Kraus, Adam ^{[5
]}

Ansdell, Megan ^{[6
]}

Pearce, Logan ^{[4
]}

Mace, Gregory N. ^{[5
]}

Andrews, Sean M. ^{[7
]}

Boyle, Andrew W. ^{[1
]}

Collins, Karen A. ^{[7
]}

De Furio, Matthew ^{[5
]}

Dragomir, Diana ^{[8
]}

Espaillat, Catherine ^{[9
]}

Feinstein, Adina D. ^{[10
]}

Fields, Matthew ^{[1
]}

Jaffe, Daniel ^{[5
]}

Lopez Murillo, Ana Isabel ^{[1
]}

Murgas, Felipe ^{[11
,12
]}

Newton, Elisabeth R. ^{[13
]}

Palle, Enric ^{[11
,12
]}

Sawczynec, Erica ^{[5
]}

Schwarz, Richard P. ^{[7
]}

Thao, Pa Chia ^{[1
]}

Tofflemire, Benjamin M. ^{[5
]}

Watkins, Cristilyn N. ^{[7
]}

Jenkins, Jon M. ^{[14
]}

Latham, David W. ^{[7
]}

Ricker, George ^{[2
,3
]}

Seager, Sara ^{[2
,3
,15
,16
]}

Vanderspek, Roland ^{[2
,3
]}

Winn, Joshua N. ^{[17
]}

Charbonneau, David ^{[7
]}

Essack, Zahra ^{[8
]}

Rodriguez, David R. ^{[18
]}

Shporer, Avi ^{[2
,3
]}

Twicken, Joseph D. ^{[14
,19
]}

Villasenor, Jesus Noel ^{[2
,3
]}

机构：

[1] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[2] MIT, Dept Phys, Cambridge, MA USA

[3] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA USA

[4] Univ Arizona, Steward Observ, Tucson, AZ USA

[5] Univ Texas Austin, Dept Astron, Austin, TX USA

[6] NASA Headquarters, Washington, DC USA

[7] Harvard & Smithsonian, Ctr Astrophys, Cambridge, MA USA

[8] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM USA

[9] Boston Univ, Dept Astron, Inst Astrophys Res, Boston, MA USA

[10] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO USA

[11] Inst Astrofis Canarias IAC, San Cristobal la Laguna, Spain

[12] Univ La Laguna ULL, Dept Astrofis, San Cristobal la Laguna, Spain

[13] Dartmouth Coll, Dept Phys & Astron, Hanover, NH USA

[14] NASA, Ames Res Ctr, Moffett Field, CA USA

[15] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA

[16] MIT, Dept Aeronaut & Astronaut, Cambridge, MA USA

[17] Princeton Univ, Dept Astrophys Sci, Princeton, NJ USA

[18] Space Telescope Sci Inst, Baltimore, MD USA

[19] SETI Inst, Mountain View, CA USA

来源：

NATURE | 2024年 / 635卷 / 8039期

关键词：

STAR; ALGORITHMS; ACCRETION; FREQUENCY; FIELD; MASS;

D O I：

10.1038/s41586-024-08123-3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Astronomers have found more than a dozen planets transiting stars that are 10-40 million years old1, but younger transiting planets have remained elusive. The lack of such discoveries may be because planets have not fully formed at this age or because our view is blocked by the protoplanetary disk. However, we now know that many outer disks are warped or broken2; provided the inner disk is depleted, transiting planets may thus be visible. Here we report observations of the transiting planet IRAS 04125+2902 b orbiting a 3-million-year-old, 0.7-solar-mass, pre-main-sequence star in the Taurus Molecular Cloud. The host star harbours a nearly face-on (30 degrees inclination) transitional disk3 and a wide binary companion. The planet has a period of 8.83 days, a radius of 10.7 Earth radii (0.96 Jupiter radii) and a 95%-confidence upper limit on its mass of 90 Earth masses (0.3 Jupiter masses) from radial-velocity measurements, making it a possible precursor of the super-Earths and sub-Neptunes frequently found around main-sequence stars. The rotational broadening of the star and the orbit of the wide (4 arcseconds, 635 astronomical units) companion are both consistent with edge-on orientations. Thus, all components of the system are consistent with alignment except the outer disk; the origin of this misalignment is unclear. Observations of a 3-million-year-old pre-main-sequence star with a misaligned disk reveal a giant orbiting planet; the system is ideal for studying the early formation and migration of planets.

引用

页码：574 / 577

页数：21

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