HD 97048

**蝘蜓座CU**
觀測資料; 曆元 J2000
星座	蝘蜓座
星官
赤經	11h 08m 03.3106s
赤緯	−77° 39′ 17.4912″
視星等（V）	8.38 - 8.48
特性
演化階段	赫比格Ae/Be星
光譜分類	A0Vep
變星類型	INA
天體測定
徑向速度 (Rv)	34.00±2.5 km/s
自行 (μ)	赤經：−22.437±0.061 mas/yr ; 赤緯：1.305±0.059 mas/yr
視差 (π)	5.4105 ± 0.0388 mas
距離	603 ± 4 ly ; (185 ± 1 pc)
絕對星等 (MV)	+2.47
詳細資料
質量	2.5 M☉
半徑	1.7 R☉
表面重力 (log g)	4.30
亮度	33 L☉
溫度	10,500 K
年齡	3 Myr
其他命名
	CD−76 488、HIP 54413、SAO 256802
參考資料庫
SIMBAD	資料

HD 97048或蝘蜓座CU是一顆位於蝘蜓座，距離7018570482047496622♠603 ly的赫比格Ae/Be星。他是一顆崁入在恆星苗圃的塵埃雲中，並且本身被塵埃盤包圍的一顆變星。

HD 97048 是一顆仍在朝向主序星收縮的年輕恆星。它的亮度在8.38和8.48星等之間變化，被歸類為獵戶型變星^[2]。它於1981年被命名為蝘蜓座CU^[9]。它的光譜也是可變的。光譜類型通常為A0或B9，光度等級有時為巨星，有時為主序星。光譜顯示強變化的發射線，表明恆星周圍有一個殼層^[10]。

HD 97048 是蝘蜓座T1星協的成員，並且仍然崁入在它正在形成的黑暗分子雲中。它照亮了烏雲中的一個小反射星雲^[11]。

行星系

這顆恆星有一個巨大的塵埃盤，其中心空腔半徑為40-46天文單位^[3]圓盤在130AU處有一個速度扭結和強度差距的一氧化碳氣體空隙，懷疑是一顆超級木星的行星引起的^[12]。在2019年，從圓盤中檢測到HCO⁺離子和氰化氫發射，表明在軌道半徑200AU處有大量氣體^[13]。

在系統中，一氧化碳氣體（CO 3-2）速度的扭結以及圓盤塵埃排放的間隙被視為存在木星原行星的證據。這顆原行星位於距離恆星130天文單位處，質量約為木星質量的2.5倍。它是截至 2023 年發現的質量最低的原行星之一^[14]。

參考資料

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天體在蓋亞望遠鏡第二批數據發布的記錄
^ ^2.0 ^2.1 ^2.2 Samus, N. N.; Durlevich, O. V.; et al. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013). VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 2009, 1. Bibcode:2009yCat....102025S.
^ ^3.0 ^3.1 ^3.2 ^3.3 ^3.4 van der Plas, G.; et al. Cavity and other radial substructures in the disk around HD 97048. Astronomy & Astrophysics. January 2017, 597: 19. Bibcode:2017A&A...597A..32V. S2CID 54495153. arXiv:1609.02488 . doi:10.1051/0004-6361/201629523. A32.
^ Irvine, N. J.; Houk, N. Spectral changes in the pre-main-sequence star HD 97048. Publications of the Astronomical Society of the Pacific. 1977, 89: 347. Bibcode:1977PASP...89..347I. doi:10.1086/130131 .
^ Gontcharov, G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system. Astronomy Letters. 2006, 32 (11): 759–771. Bibcode:2006AstL...32..759G. S2CID 119231169. arXiv:1606.08053 . doi:10.1134/S1063773706110065.
^ Anderson, E.; Francis, Ch. XHIP: An extended hipparcos compilation. Astronomy Letters. 2012, 38 (5): 331. Bibcode:2012AstL...38..331A. S2CID 119257644. arXiv:1108.4971 . doi:10.1134/S1063773712050015.
^ ^7.0 ^7.1 ^7.2 ^7.3 Fairlamb, J. R.; Oudmaijer, R. D.; Mendigutía, I.; Ilee, J. D.; Van Den Ancker, M. E. A spectroscopic survey of Herbig Ae/Be stars with X-shooter - I. Stellar parameters and accretion rates. Monthly Notices of the Royal Astronomical Society. 2015, 453 (1): 976. Bibcode:2015MNRAS.453..976F. S2CID 55938596. arXiv:1507.05967 . doi:10.1093/mnras/stv1576.
^ HD 97048. SIMBAD. 斯特拉斯堡天文資料中心.
^ Kholopov, P. N.; Samus', N. N.; Kukarkina, N. P.; Medvedeva, G. I.; Perova, N. B. 65th Name-List of Variable Stars. Information Bulletin on Variable Stars. 1981, 1921: 1. Bibcode:1981IBVS.1921....1K.
^ Skiff, B. A. VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009-2014). VizieR On-line Data Catalog: B/Mk. Originally Published in: Lowell Observatory (October 2014). 2014, 1. Bibcode:2014yCat....1.2023S.
^ Rydgren, A. E. Observations of young stars in the association Chamaeleon T1. The Astronomical Journal. 1980, 85: 444. Bibcode:1980AJ.....85..444R. doi:10.1086/112694.
^ ^12.0 ^12.1 Pinte, C.; Van Der Plas, G.; Ménard, F.; Price, D. J.; Christiaens, V.; Hill, T.; Mentiplay, D.; Ginski, C.; Choquet, E.; Boehler, Y.; Duchêne, G.; Perez, S.; Casassus, S. Kinematic detection of a planet carving a gap in a protoplanetary disk. Nature Astronomy. 2019, 3 (12): 1109–1114. Bibcode:2019NatAs...3.1109P. S2CID 195820690. arXiv:1907.02538 . doi:10.1038/s41550-019-0852-6.
^ Booth, Alice S.; Walsh, Catherine; Ilee, John D. First detections of H13CO+ and HC15N in the disk around HD 97048. Astronomy & Astrophysics. 2019, 629: A75. S2CID 197544948. arXiv:1907.08060 . doi:10.1051/0004-6361/201834388.
^ Pinte, C.; van der Plas, G.; Ménard, F.; Price, D. J.; Christiaens, V.; Hill, T.; Mentiplay, D.; Ginski, C.; Choquet, E.; Boehler, Y.; Duchêne, G.; Perez, S.; Casassus, S. Kinematic detection of a planet carving a gap in a protoplanetary disk. Nature Astronomy. 2019-08-01, 3 (12): 1109–1114. Bibcode:2019NatAs...3.1109P. ISSN 2397-3366. S2CID 195820690. arXiv:1907.02538 . doi:10.1038/s41550-019-0852-6.

HD 97048的行星系^[3]^[12]
成員 (依恆星距離)	質量	半長軸 (AU)	軌道周期 (天)	離心率	傾角	半徑
原行星盤	40 — 850 AU				40°	—
b	7000250000000000000♠2.5±0.5 M_J	130	—	—	40°	—

[Gaia_DR2-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天體在蓋亞望遠鏡第二批數據發布的記錄

[gcvs-2] 2.0 ^2.1 ^2.2 Samus, N. N.; Durlevich, O. V.; et al. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013). VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 2009, 1. Bibcode:2009yCat....102025S.

[vanDerPlas2017-3] 3.0 ^3.1 ^3.2 ^3.3 ^3.4 van der Plas, G.; et al. Cavity and other radial substructures in the disk around HD 97048. Astronomy & Astrophysics. January 2017, 597: 19. Bibcode:2017A&A...597A..32V. S2CID 54495153. arXiv:1609.02488 . doi:10.1051/0004-6361/201629523. A32.

[mk-4] Irvine, N. J.; Houk, N. Spectral changes in the pre-main-sequence star HD 97048. Publications of the Astronomical Society of the Pacific. 1977, 89: 347. Bibcode:1977PASP...89..347I. doi:10.1086/130131 .

[rv-5] Gontcharov, G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system. Astronomy Letters. 2006, 32 (11): 759–771. Bibcode:2006AstL...32..759G. S2CID 119231169. arXiv:1606.08053 . doi:10.1134/S1063773706110065.

[xhip-6] Anderson, E.; Francis, Ch. XHIP: An extended hipparcos compilation. Astronomy Letters. 2012, 38 (5): 331. Bibcode:2012AstL...38..331A. S2CID 119257644. arXiv:1108.4971 . doi:10.1134/S1063773712050015.

[fairlamb-7] 7.0 ^7.1 ^7.2 ^7.3 Fairlamb, J. R.; Oudmaijer, R. D.; Mendigutía, I.; Ilee, J. D.; Van Den Ancker, M. E. A spectroscopic survey of Herbig Ae/Be stars with X-shooter - I. Stellar parameters and accretion rates. Monthly Notices of the Royal Astronomical Society. 2015, 453 (1): 976. Bibcode:2015MNRAS.453..976F. S2CID 55938596. arXiv:1507.05967 . doi:10.1093/mnras/stv1576.

[Simbad-8] HD 97048. SIMBAD. 斯特拉斯堡天文資料中心.

[ibvs-9] Kholopov, P. N.; Samus', N. N.; Kukarkina, N. P.; Medvedeva, G. I.; Perova, N. B. 65th Name-List of Variable Stars. Information Bulletin on Variable Stars. 1981, 1921: 1. Bibcode:1981IBVS.1921....1K.

[skiff-10] Skiff, B. A. VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009-2014). VizieR On-line Data Catalog: B/Mk. Originally Published in: Lowell Observatory (October 2014). 2014, 1. Bibcode:2014yCat....1.2023S.

[rydgren-11] Rydgren, A. E. Observations of young stars in the association Chamaeleon T1. The Astronomical Journal. 1980, 85: 444. Bibcode:1980AJ.....85..444R. doi:10.1086/112694.

[Pinte2019-12] 12.0 ^12.1 Pinte, C.; Van Der Plas, G.; Ménard, F.; Price, D. J.; Christiaens, V.; Hill, T.; Mentiplay, D.; Ginski, C.; Choquet, E.; Boehler, Y.; Duchêne, G.; Perez, S.; Casassus, S. Kinematic detection of a planet carving a gap in a protoplanetary disk. Nature Astronomy. 2019, 3 (12): 1109–1114. Bibcode:2019NatAs...3.1109P. S2CID 195820690. arXiv:1907.02538 . doi:10.1038/s41550-019-0852-6.

[?-13] Booth, Alice S.; Walsh, Catherine; Ilee, John D. First detections of H13CO+ and HC15N in the disk around HD 97048. Astronomy & Astrophysics. 2019, 629: A75. S2CID 197544948. arXiv:1907.08060 . doi:10.1051/0004-6361/201834388.

[14] Pinte, C.; van der Plas, G.; Ménard, F.; Price, D. J.; Christiaens, V.; Hill, T.; Mentiplay, D.; Ginski, C.; Choquet, E.; Boehler, Y.; Duchêne, G.; Perez, S.; Casassus, S. Kinematic detection of a planet carving a gap in a protoplanetary disk. Nature Astronomy. 2019-08-01, 3 (12): 1109–1114. Bibcode:2019NatAs...3.1109P. ISSN 2397-3366. S2CID 195820690. arXiv:1907.02538 . doi:10.1038/s41550-019-0852-6.

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觀測資料曆元 J2000
星座	蝘蜓座
星官
赤經	11^h 08^m 03.3106^s^[1]
赤緯	−77° 39′ 17.4912″^[1]
視星等（V）	8.38 - 8.48^[2]
特性
演化階段	赫比格Ae/Be星^[3]
光譜分類	A0Vep^[4]
變星類型	INA^[2]
天體測定

徑向速度 (R_v)	34.00±2.5^[5] km/s
自行 (μ)	赤經：2998775630000000000♠−22.437±0.061^[1] mas/yr 赤緯：7000130500000000000♠1.305±0.059^[1] mas/yr
視差 (π)	5.4105 ± 0.0388^[1] mas
距離	603 ± 4 ly (185 ± 1 pc)
絕對星等 (M_V)	+2.47^[6]

詳細資料

質量	2.5^[3] M_☉
半徑	1.7^[7] R_☉
表面重力 (log g)	4.30^[7]
亮度	33^[7] L_☉
溫度	10,500^[7] K
年齡	3^[3] Myr

其他命名
CD−76 488、HIP 54413、SAO 256802^[8]
參考資料庫
SIMBAD	資料