HIP 33609 b: An Eccentric Brown Dwarf Transiting a V=7.3 Rapidly Rotating B Star

被引：12

作者：

Vowell, Noah ^{[1
]}

Rodriguez, Joseph E. ^{[1
]}

Quinn, Samuel N. ^{[2
]}

Zhou, George ^{[3
]}

Vanderburg, Andrew ^{[4
,5
]}

Mann, Andrew W. ^{[6
]}

Hooton, Matthew J. ^{[7
]}

Stassun, Keivan G. ^{[8
,9
]}

Howard, Saburo ^{[10
]}

Bieryla, Allyson ^{[2
]}

Latham, David W. ^{[2
]}

Howell, Steve B. ^{[11
]}

Guillot, Tristan ^{[10
]}

Ziegler, Carl ^{[12
]}

Collins, Karen A. ^{[2
]}

Carmichael, Theron W. ^{[13
]}

Jenkins, Jon M. ^{[11
]}

Shporer, Avi ^{[4
,5
]}

Lyu, Abe ^{[10
]}

Bendjoya, Philippe ^{[10
]}

Bush, Jonathan L. ^{[6
]}

Buttu, Marco ^{[14
]}

Collins, Kevin I. ^{[15
]}

Eastman, Jason D. ^{[2
]}

Fields, Matthew J. ^{[6
]}

Gasparetto, Thomas ^{[16
]}

Gunther, Maximilian N. ^{[17
]}

Kostov, Veselin B. ^{[18
,19
]}

Kraus, Adam L. ^{[20
]}

Lester, Kathryn V. ^{[11
]}

Levine, Alan M. ^{[4
,5
]}

Littlefield, Colin ^{[11
,21
]}

Marie-Sainte, Wenceslas ^{[22
]}

Mekarnia, Djamel ^{[10
]}

Osborn, Hugh P. ^{[4
,5
,23
]}

Rapetti, David ^{[11
,24
]}

Ricker, George R. ^{[4
,5
]}

Seager, S. ^{[4
,5
,25
,26
]}

Sefako, Ramotholo ^{[27
]}

Srdoc, Gregor ^{[28
]}

Suarez, Olga ^{[10
]}

Torres, Guillermo ^{[2
]}

Triaud, Amaury H. M. J. ^{[29
]}

Vanderspek, R. ^{[4
,5
]}

Winn, Joshua N. ^{[30
]}

机构：

[1] Michigan State Univ, Ctr Data Intens & Time Domain Astron, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[3] Univ Southern Queensland, West St, Darling Hts, QLD 4350, Australia

[4] MIT, Dept Phys, Cambridge, MA 02139 USA

[5] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

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

[7] Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England

[8] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[9] Fisk Univ, Dept Phys, 1000 17th Ave North, Nashville, TN 37208 USA

[10] Univ Cote Azur, CNRS, Lagrange Lab, Observ Cote Azur, Nice, France

[11] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[12] Stephen F Austin State Univ, Dept Phys Engn & Astron, 1936 North St, Nacogdoches, TX 75962 USA

[13] Univ Edinburgh, Inst Astron, Royal Observ, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland

[14] INAF Osservatorio Astron Cagliari, Cagliari, Italy

[15] George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA

[16] CNR, Inst Polar Sci, Via Torino 155, I-30172 Venice, Italy

[17] European Space Agcy ESA, European Space Res & Technol Ctr ESTEC, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands

[18] NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA

[19] SETI Inst, 189 Bernardo Ave,Suite 200, Mountain View, CA 94043 USA

[20] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[21] Bay Area Environm Res Inst, Moffett Field, CA 94035 USA

[22] Inst Paul Emile Victor, Concordia Stn, Plouzane, France

[23] Univ Bern, Phys Inst, Gesellsschaftstr 6, CH-3012 Bern, Switzerland

[24] Univ Space Res Assoc, Res Inst Adv Comp Sci, Washington, DC 20024 USA

[25] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA

[26] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA

[27] South African Astron Observ, POB 9, ZA-7935 Cape Town, South Africa

[28] Kotizarovci Observ, Sarsoni 90, Viskovo 51216, Croatia

[29] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[30] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

来源：

ASTRONOMICAL JOURNAL | 2023年 / 165卷 / 06期

基金：

美国国家科学基金会; 英国科学技术设施理事会; 瑞士国家科学基金会; 欧洲研究理事会;

关键词：

LIMB-DARKENING COEFFICIENTS; HOT-JUPITER; ECLIPSING BINARY; SHORT-PERIOD; STELLAR COMPANIONS; GIANT PLANETS; SOLAR-TYPE; ERROR-CORRECTION; MESA ISOCHRONES; MASCARA-1; B;

D O I：

10.3847/1538-3881/acd197

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the discovery and characterization of HIP 33609 b, a transiting warm brown dwarf orbiting a late B star, discovered by NASA's Transiting Exoplanet Survey Satellite as TOI-588 b. HIP 33609 b is a large (R-b = 1.580(-0.070)(+0.074) +R-J) brown dwarf on a highly eccentric (e = 0.560(-0.031)(+0.029)) orbit with a 39 days period. The host star is a 0.029 bright (V = 7.3 mag), T-eff = K-+800(-660) star with a mass of M-* = 2.383(-0.095)(+0.10) M-circle dot and radius of R-*=1.863(-0.082)(+0.087)R circle dot, making it the hottest transiting brown dwarf host star discovered to date. We obtained radial velocity measurements from the CHIRON spectrograph confirming the companion's mass of M-b = 68.0(-7.1)(+7.4)M(J) as well as the host star's rotation rate (v sin i(*) 55.6 +/- 1.8 km s(-1)). We also present the discovery of a new comoving group of stars, designated as MELANGE-6, and determine that HIP 33609 is a member. We use a combination of rotation periods and isochrone models fit to the cluster members to estimate an age of 150 +/- 25 Myr. With a measured mass, radius, and age, HIP 33609 b becomes a benchmark for substellar evolutionary models.

引用

页数：13

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