Gaia DR2 study of Herbig Ae/Be stars

被引：150

作者：

Vioque, M. ^{[1
,2
]}

Oudmaijer, R. D. ^{[1
]}

Baines, D. ^{[3
]}

Mendigutia, I. ^{[4
]}

Perez-Martinez, R. ^{[2
]}

机构：

[1] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[2] XMM Newton Sci Operat Ctr, Ingn Sistemas Def Espana Isdefe, ESA ESAC Campus,POB 78, Madrid 28691, Spain

[3] ESAC Sci Data Ctr, Quasar Sci Resources ESA ESAC, POB 78, Madrid 28691, Spain

[4] Ctr Astrobiol CSIC INTA, Dept Astrofis, ESA ESAC Campus,POB 78, Madrid 28691, Spain

来源：

ASTRONOMY & ASTROPHYSICS | 2018年 / 620卷

基金：

欧盟地平线“2020”;

关键词：

stars: variables: T-Tauri; stars: variables: Herbig Ae/Be; Hertzsprung-Russell and C-M diagrams; stars: formation; stars:; emission-line; Be; infrared: stars; stars: pre-main sequence; HIGH-RESOLUTION SPECTROSCOPY; T-TAURI; CIRCUMSTELLAR DISKS; BINARY-SYSTEM; LINEAR SPECTROPOLARIMETRY; IRAS OBSERVATIONS; X-SHOOTER; VEGA-TYPE; ACCRETION; EMISSION;

D O I：

10.1051/0004-6361/201832870

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Aims. We use Gaia Data Release 2 (DR2) to place 252 Herbig Ae/Be stars in the Hertzsprung-Russell diagram and investigate their characteristics and properties. Methods. For all known Herbig Ae/Be stars with parallaxes in Gaia DR2, we collected their atmospheric parameters and photometric and extinction values from the literature. To these data we added near-infrared and mid-infrared photometry, and collected H alpha emission line properties such as equivalent widths and line profiles, and their binarity status. In addition, we developed a photometric variability indicator from Gaia's DR2 information. Results. We provide masses, ages, luminosities, distances, photometric variabilities and IR excesses homogeneously derived for the most complete sample of Herbig Ae/Be stars to date. We find that high-mass stars have a much smaller IR excess and have much lower optical variabilities compared to lower-mass stars, with the break at around 7 M-circle dot. H alpha emission is generally correlated with IR excess, with the correlation being stronger for IR emission at wavelengths tracing the hot dust closest to the star. The variability indicator as developed by us shows that similar to 25% of all Herbig Ae/Be stars are strongly variable. We observe that the strongly variable objects display doubly peaked H alpha line profiles, indicating an edge-on disk. Conclusions. The fraction of strongly variable Herbig Ae stars is close to that found for A-type UX Ori stars. It had been suggested that this variability is in most cases due to asymmetric dusty disk structures seen edge-on. The observation here is in strong support of this hypothesis. Finally, the difference in dust properties occurs at 7 M-circle dot, while various properties traced at UV/optical wavelengths differ at a lower mass, 3 M-circle dot. The latter has been linked to different accretion mechanisms at work, whereas the differing IR properties and photometric variabilities are related to different or differently acting (dust-)disk-dispersal mechanisms.

引用

页数：17

共 154 条

[1] High-cadence, High-resolution Spectroscopic Observations of Herbig Stars HD 98922 and V1295 Aquila [J].

Aarnio, Alicia N. ;

Monnier, John D. ;

Harries, Tim J. ;

Kraus, Stefan ;

Calvet, Nuria ;

Acreman, David ;

Che, Xiao .

ASTROPHYSICAL JOURNAL, 2017, 848 (01)

[2] A statistical spectropolarimetric study of Herbig Ae/Be stars [J].

Ababakr, K. M. ;

Oudmaijer, R. D. ;

Vink, J. S. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 472 (01) :854-868

[3] Linear spectropolarimetry across the optical spectrum of Herbig Ae/Be stars [J].

Ababakr, K. M. ;

Oudmaijer, R. D. ;

Vink, J. S. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 461 (03) :3089-3110

[4] Spectroscopy and linear spectropolarimetry of the early Herbig Be stars PDS 27 and PDS 37 [J].

Ababakr, K. M. ;

Fairlamb, J. R. ;

Oudmaijer, R. D. ;

van den Ancker, M. E. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 452 (03) :2566-2578

[5] [OI] 6300 Å emission in Herbig Ae/Be systems:: Signature of Keplerian rotation [J].

Acke, B ;

van den Ancker, ME ;

Dullemond, CP .

ASTRONOMY & ASTROPHYSICS, 2005, 436 (01) :209-230

[6] A high-resolution spectropolarimetric survey of Herbig Ae/Be stars - I. Observations and measurements [J].

Alecian, E. ;

Wade, G. A. ;

Catala, C. ;

Grunhut, J. H. ;

Landstreet, J. D. ;

Bagnulo, S. ;

Boehm, T. ;

Folsom, C. P. ;

Marsden, S. ;

Waite, I. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 429 (02) :1001-1026

[7] Circumstellar disks around Herbig Be stars [J].

Alonso-Albi, T. ;

Fuente, A. ;

Bachiller, R. ;

Neri, R. ;

Planesas, P. ;

Testi, L. ;

Berne, O. ;

Joblin, C. .

ASTRONOMY & ASTROPHYSICS, 2009, 497 (01) :117-136

[8] Gaia Data Release 2 Catalogue validation [J].

Arenou, F. ;

Luri, X. ;

Babusiaux, C. ;

Fabricius, C. ;

Helmi, A. ;

Muraveva, T. ;

Robin, A. C. ;

Spoto, F. ;

Vallenari, A. ;

Antoja, T. ;

Cantat-Gaudin, T. ;

Jordi, C. ;

Leclerc, N. ;

Reyle, C. ;

Romero-Gomez, M. ;

Shih, I. -C. ;

Soria, S. ;

Barache, C. ;

Bossini, D. ;

Bragaglia, A. ;

Breddels, M. A. ;

Fabrizio, M. ;

Lambert, S. ;

Marrese, P. M. ;

Massari, D. ;

Moitinho, A. ;

Robichon, N. ;

Ruiz-Dern, L. ;

Sordo, R. ;

Veljanoski, J. ;

Eyer, L. ;

Jasniewicz, G. ;

Pancino, E. ;

Soubiran, C. ;

Spagna, A. ;

Tanga, P. ;

Turon, C. ;

Zurbach, C. .

ASTRONOMY & ASTROPHYSICS, 2018, 616

[9]

Aspin C, 1998, ASTRON ASTROPHYS, V335, P1040

[10] Gaia Data Release 2. Observational Hertzsprung-Russell diagrams [J].

Babusiaux, C. ;

van Leeuwen, F. ;

Barstow, M. A. ;

Jordi, C. ;

Vallenari, A. ;

Bossini, D. ;

Bressan, A. ;

Cantat-Gaudin, T. ;

van Leeuwen, M. ;

Brown, A. G. A. ;

Prusti, T. ;

de Bruijne, J. H. J. ;

Bailer-Jones, C. A. L. ;

Biermann, M. ;

Evans, D. W. ;

Eyer, L. ;

Jansen, F. ;

Klioner, S. A. ;

Lammers, U. ;

Lindegren, L. ;

Luri, X. ;

Mignard, F. ;

Panem, C. ;

Pourbaix, D. ;

Randich, S. ;

Sartoretti, P. ;

Siddiqui, H. I. ;

Soubiran, C. ;

Walton, N. A. ;

Arenou, F. ;

Bastian, U. ;

Cropper, M. ;

Drimmel, R. ;

Katz, D. ;

Lattanzi, M. G. ;

Bakker, J. ;

Cacciari, C. ;

Castaneda, J. ;

Chaoul, L. ;

Cheek, N. ;

De Angeli, F. ;

Fabricius, C. ;

Guerra, R. ;

Holl, B. ;

Masana, E. ;

Messineo, R. ;

Mowlavi, N. ;

Nienartowicz, K. ;

Panuzzo, P. ;

Portell, J. .

ASTRONOMY & ASTROPHYSICS, 2018, 616

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