The history of dynamics and stellar feedback revealed by the HI filamentary structure in the disk of the Milky Way

被引：37

作者：

Soler, J. D. ^{[1
]}

Beuther, H. ^{[1
]}

Syed, J. ^{[1
]}

Wang, Y. ^{[1
]}

Anderson, L. D. ^{[2
]}

Glover, S. C. O. ^{[3
]}

Hennebelle, P. ^{[4
]}

Heyer, M. ^{[5
]}

Henning, Th. ^{[1
]}

Izquierdo, A. F. ^{[6
,7
]}

Klessen, R. S. ^{[3
]}

Linz, H. ^{[1
]}

McClure-Griffiths, N. M. ^{[8
]}

Ott, J. ^{[9
]}

Ragan, S. E. ^{[10
]}

Rugel, M. ^{[11
]}

Schneider, N. ^{[12
]}

Smith, R. J. ^{[6
]}

Sormani, M. C. ^{[3
]}

Stil, J. M. ^{[13
]}

Tress, R. ^{[3
]}

Urquhart, J. S. ^{[14
]}

机构：

[1] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[2] West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA

[3] Heidelberg Univ, Inst Theoret Astrophys, Zentrum Astron, Albert Ueberle Str 2, D-69120 Heidelberg, Germany

[4] Univ Paris Diderot, CNRS, CEA IRFU SAp, Lab AIM,Paris Saclay, F-91191 Gif Sur Yvette, France

[5] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA

[6] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Oxford Rd, Manchester M13 9PL, Lancs, England

[7] ESO, Karl Schwarzschild Str 2, D-85748 Garching, Germany

[8] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT, Australia

[9] Natl Radio Astron Observ, POB O,1003 Lopezville Rd, Socorro, NM 87801 USA

[10] Cardiff Univ, Sch Phys & Astron, Queens Bldg, Cardiff CF24 3AA, Wales

[11] Max Planck Inst Radio Astron, Hugel 69, D-53121 Bonn, Germany

[12] Univ Cologne, Phys Inst 1, Zulpicher Str 77, D-50937 Cologne, Germany

[13] Univ Calgary, Dept Phys & Astron, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada

[14] Univ Kent, Ctr Astrophys & Planetary Sci, Canterbury CT2 7NH, Kent, England

来源：

ASTRONOMY & ASTROPHYSICS | 2020年 / 642卷

基金：

欧洲研究理事会; 英国科学技术设施理事会;

关键词：

ISM; structure; kinematics and dynamics; atoms; clouds; Galaxy; radio lines; ABSORPTION-LINE SURVEY; MOLECULAR CLOUDS; GALACTIC DISTRIBUTION; MASSIVE CLUSTER; SELF-ABSORPTION; MAGNETIC-FIELD; RED SUPERGIANTS; MASER EMISSION; STAR-FORMATION; I SHELLS;

D O I：

10.1051/0004-6361/202038882

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a study of the filamentary structure in the emission from the neutral atomic hydrogen (HI) at 21 cm across velocity channels in the 40 '' and 1.5-km s(-1) resolution position-position-velocity cube, resulting from the combination of the single-dish and interferometric observations in The HI/OH/recombination-line survey of the inner Milky Way. Using the Hessian matrix method in combination with tools from circular statistics, we find that the majority of the filamentary structures in the HI emission are aligned with the Galactic plane. Part of this trend can be assigned to long filamentary structures that are coherent across several velocity channels. However, we also find ranges of Galactic longitude and radial velocity where the HI filamentary structures are preferentially oriented perpendicular to the Galactic plane. These are located (i) around the tangent point of the Scutum spiral arm and the terminal velocities of the Molecular Ring, around l approximate to 28 degrees and v(LSR) approximate to 100 km s(-1), (ii) toward l approximate to 45 degrees and v(LSR) approximate to 50 km s(-1), (iii) around the Riegel-Crutcher cloud, and (iv) toward the positive and negative terminal velocities. A comparison with numerical simulations indicates that the prevalence of horizontal filamentary structures is most likely the result of large-scale Galactic dynamics and that vertical structures identified in (i) and (ii) may arise from the combined effect of supernova (SN) feedback and strong magnetic fields. The vertical filamentary structures in (iv) can be related to the presence of clouds from extra-planar HI gas falling back into the Galactic plane after being expelled by SNe. Our results indicate that a systematic characterization of the emission morphology toward the Galactic plane provides an unexplored link between the observations and the dynamical behavior of the interstellar medium, from the effect of large-scale Galactic dynamics to the Galactic fountains driven by SNe.

引用

页数：28

共 142 条

[1] Fourier-space combination of Planck and Herschel images [J].

Abreu-Vicente, J. ;

Stutz, A. ;

Henning, Th. ;

Keto, E. ;

Ballesteros-Paredes, J. ;

Robitaille, T. .

ASTRONOMY & ASTROPHYSICS, 2017, 604

[2] THE DISCOVERY OF A MASSIVE CLUSTER OF RED SUPERGIANTS WITH GLIMPSE [J].

Alexander, Michael J. ;

Kobulnicky, Henry A. ;

Clemens, Dan P. ;

Jameson, Katherine ;

Pinnick, April ;

Pavel, Michael .

ASTRONOMICAL JOURNAL, 2009, 137 (06) :4824-4833

[3] Galactic supernova remnant candidates discovered by THOR [J].

Anderson, L. D. ;

Wang, Y. ;

Bihr, S. ;

Rugel, M. ;

Beuther, H. ;

Bigiel, F. ;

Churchwell, E. ;

Glover, S. C. O. ;

Goodman, A. A. ;

Henning, Th. ;

Heyer, M. ;

Klessen, R. S. ;

Linz, H. ;

Longmore, S. N. ;

Menten, K. M. ;

Ott, J. ;

Roy, N. ;

Soler, J. D. ;

Stil, J. M. ;

Urquhart, J. S. .

ASTRONOMY & ASTROPHYSICS, 2017, 605

[4] THE WISE CATALOG OF GALACTIC H II REGIONS [J].

Anderson, L. D. ;

Bania, T. M. ;

Balser, Dana S. ;

Cunningham, V. ;

Wenger, T. V. ;

Johnstone, B. M. ;

Armentrout, W. P. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2014, 212 (01)

[5]

[Anonymous], 2014, arXiv: 1312.6232, DOI [DOI 10.2458/AZUUAPRESS9780816531240-CH002, DOI 10.2458/AZU_UAPRESS_9780816531240-CH002, 10.2458/azuuapress9780816531240-ch002]

[6]

Batschelet E., 1981, CIRCULAR STAT BIOL M

[7]

Batschelet E., 1972, RECENT STAT METHODS, V262, P61

[8] QUANTIFYING OBSERVATIONAL PROJECTION EFFECTS USING MOLECULAR CLOUD SIMULATIONS [J].

Beaumont, Christopher N. ;

Offner, Stella S. R. ;

Shetty, Rahul ;

Glover, Simon C. O. ;

Goodman, Alyssa A. .

ASTROPHYSICAL JOURNAL, 2013, 777 (02)

[9] OH maser emission in the THOR survey of the northern Milky Way [J].

Beuther, H. ;

Walsh, A. ;

Wang, Y. ;

Rugel, M. ;

Soler, J. ;

Linz, H. ;

Klessen, R. S. ;

Anderson, L. D. ;

Urquhart, J. S. ;

Glover, S. C. O. ;

Billington, S. J. ;

Kainulainen, J. ;

Menten, K. M. ;

Roy, N. ;

Longmore, S. N. ;

Bigiel, F. .

ASTRONOMY & ASTROPHYSICS, 2019, 628

[10]

Beuther H., 2020, A A, V638, pA44

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