NDLI: Parameters for the dust envelope of the protoplanetary nebula IRAS 18062+2410

Content Provider	Springer Nature Link
Author	Bogdav, M. B.
Copyright Year	2000
Abstract	We have calculated a model for the dust envelope of the protoplanetary nebula IRAS 18062+2410 using observations from the ultraviolet to the far infrared. We assume that the envelope is spherically symmetrical and consists of identical silicate grains with a radius of 0.10 micron, and with the number density of the grains inversely proportional to the square of the distance. The optical depth of the envelope, whose inner boundary is 1.40×10$^{−3}$ pc from the center of the star, is 0.050 at 10 microns. At the inner envelope boundary, the temperature of the dust grains is 410 K and their density is 2.7×10$^{−7}$ cm$^{−3}$. Using calculations of stellar evolution at the stage following the exit from the asymptotic giant branch, we estimate the dust envelope’s expansion velocity to be 12 km/s. The mass-loss rate of the star preceding the ejection of the envelope was about 4.5×10$^{−6}$ M $_{⊙}$/yr. The observed excess of far-IR flux is not associated with the continuum radiation of the nebula, and may provide evidence for the presence of dust ejected by the star in earlier stages of its evolution.
Starting Page	685
Ending Page	688
Page Count	4
File Format	PDF
ISSN	10637729
Journal	Astronomy Reports
Volume Number	44
Issue Number	10
e-ISSN	15626881
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2000-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astronomy
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

Variability and rapid evolution of the protoplanetary object IRAS 18062+2410=V886 her

Line identification and photometric observations of the future planetary nebula IRAS 18 062+2410=V886 Her in 1997–1999

A model for the dust envelope of the protoplanetary nebula LSIV-12°111

Results of infrared photometry and a model for the dust envelope of the protoplanetary nebula candidate V1027 Cyg

Spectroscopy and photometry of the protoplanetary nebula candidate stHα62 = IRAS 07171+1823

A model for the dust envelope of V1853 Cygni

Parameters of the dust envelope of the symbiotic star CH Cygni

Polarimetry of the protoplanetary nebula AFGL 2688

Photometric variability of the protoplanetary nebula LSIV-12°111

Parameters for the dust envelope of the protoplanetary nebula IRAS 18062+2410

Similar Documents

Variability and rapid evolution of the protoplanetary object IRAS 18062+2410=V886 her

Line identification and photometric observations of the future planetary nebula IRAS 18 062+2410=V886 Her in 1997–1999

A model for the dust envelope of the protoplanetary nebula LSIV-12°111

Results of infrared photometry and a model for the dust envelope of the protoplanetary nebula candidate V1027 Cyg

Spectroscopy and photometry of the protoplanetary nebula candidate stHα62 = IRAS 07171+1823

A model for the dust envelope of V1853 Cygni

Parameters of the dust envelope of the symbiotic star CH Cygni

Polarimetry of the protoplanetary nebula AFGL 2688

Photometric variability of the protoplanetary nebula LSIV-12°111

Parameters for the dust envelope of the protoplanetary nebula IRAS 18062+2410