NDLI: Peculiar features of the velocity field of OB associations and the spiral structure of the galaxy

Please wait, while we are loading the content...

The line-of-sight velocities of OB associations and molecular clouds in a wide solar neighborhood: The streaming motions of stars and gas in the Perseus arm

Mechanisms of the vertical secular heating of a stellar disk

A study of the B[e] star AS 160

Some integrable cases of the two-body problem with mass depending both on time and distance

A basic system of equations in the field of a rotationally symmetric potential

Astronomy Letters : Volume 29, Issue 4, April 2003

Astronomy Letters : Volume 29, Issue 3, March 2003

Astronomy Letters : Volume 29, Issue 2, February 2003

Astronomy Letters : Volume 29, Issue 1, January 2003

Astronomy Letters : Volume 28

Astronomy Letters : Volume 27

Astronomy Letters : Volume 26

Peculiar features of the velocity field of OB associations and the spiral structure of the galaxy

Content Provider	Springer Nature Link
Author	Melnik, A. M.
Copyright Year	2003
Abstract	Some of the peculiar features of the periodic velocity-field structure for OB associations can be explained using the Roberts-Hausman model, in which the behavior of a system of dense clouds is considered in a perturbed potential. The absence of statistically significant variations in the azimuthal velocity across the Carina arm probably results from its sharp increase behind the shock front, which is easily blurred by distance errors. The existence of a shock wave in the spiral arms and, at the same time, the virtually free motion of OB associations in epicycles can be reconciled in the model of particle clouds with a mean free path of 0.2–2 kpc. The velocity field of OB associations exhibits two appreciable nonrandom deviations from an ideal spiral pattern: a 0.5-kpc displacement of the Cygnus-and Carina-arm fragments from one another and a weakening of the Perseus arm in quadrant III. However, the identified fragments of the Carina, Cygnus, and Perseus arms do not belong to any of the known types of spurs.
Starting Page	304
Ending Page	310
Page Count	7
File Format	PDF
ISSN	10637737
Journal	Astronomy Letters
Volume Number	29
Issue Number	5
e-ISSN	15626873
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2003-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	kinematics and dynamics Milky Way Galaxy spiral pattern OB associations Astronomy Astrophysics
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Periodic pattern in the residual-velocity field of OB associations

Peculiar Features of the Velocity Field of OB Associations and the Spiral Structure of the Galaxy

Kinematics of the outer pseudorings and the spiral structure of the Galaxy

The spiral structure of our Milky Way Galaxy

Gas dynamics in the Milky Way: second pattern speed and large-scale morphology

Transverse gradients of azimuthal velocity in a global disc model of the Milky Way

The pattern speed of the OH/IR stars in the Milky Way

Evidence of a bisymmetric spiral in the Milky Way

Milky Way Gas Dynamics

Peculiar features of the velocity field of OB associations and the spiral structure of the galaxy

Similar Documents

Periodic pattern in the residual-velocity field of OB associations

Peculiar Features of the Velocity Field of OB Associations and the Spiral Structure of the Galaxy

Kinematics of the outer pseudorings and the spiral structure of the Galaxy

The spiral structure of our Milky Way Galaxy

Gas dynamics in the Milky Way: second pattern speed and large-scale morphology

Transverse gradients of azimuthal velocity in a global disc model of the Milky Way

The pattern speed of the OH/IR stars in the Milky Way

Evidence of a bisymmetric spiral in the Milky Way

Milky Way Gas Dynamics

Peculiar features of the velocity field of OB associations and the spiral structure of the galaxy