Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/4254
Title: Presence of LaO, Presence of LaO, ScO and VO molecular lines in sunspot umbral spectra
Authors: Sriramachandran, P
Bagare, S. P
Rajamanickam, N
Balachandra Kumar, K
Keywords: Sunspots;Umbral spectra;Metal oxides;Spectroscopic data;Rotational temperature
Issue Date: Nov-2008
Publisher: Springer
Citation: Solar Physics, Vol. 252, No. 2, pp. 267 - 281
Abstract: High-resolution Fourier Transform Spectrometer sunspot umbral spectra of the National Solar Observatory/National Optical Astronomy Observatory at Kitt Peak were used to detect rotational lines from 19 electronic transition bands of the molecules LaO, ScO and VO, in the wavenumber range of 11775 to 20600 cm−1. The presence of lines from the following transitions is confirmed: A 2 Π r1/2 – X 2 Σ +(0, 0; 0, 1), A 2 Π r3/2 – X 2 Σ +(1, 0), B 2 Σ + – X 2 Σ +(0, 0; 0, 1; 1, 0) and C 2 Π r1/2 – A′2Δ r3/2(0, 0; 1, 1) of LaO; A 2 Π r3/2 – X 2 Σ +(0, 0), A 2 Π r1/2 – X 2 Σ +(0, 0) and B 2 Σ + – X 2 Σ +(0, 0) of ScO; and C 4 Σ − – X 4 Σ −(0, 1; 1, 0; 0, 2) and (2, 0) of VO. However, the presence of A 2 Π r3/2 – X 2 Σ +(0, 0) and C 2 Π r3/2 – A′2Δ r5/2(0, 0; 1, 1) of LaO and C 4 Σ − – X 4 Σ −(0, 0) of VO are found to be doubtful because the lines are very weak, and detections are difficult owing to heavy blending by strong rotational lines of other molecules. Equivalent widths are measured for well-resolved lines and, thereby, the effective rotational temperatures are estimated for the systems for which the presence is confirmed.
Description: Restricted Access
The original publication is available at springerlink.com
URI: http://hdl.handle.net/2248/4254
ISSN: 0038-0938
???metadata.dc.rights???: © Springer
???metadata.dc.relation.uri???: http://www.springerlink.com/content/dv571g25378p34v2/
The original publication is available at springerlink.com
Appears in Collections:IIAP Publications

Files in This Item:
File Description SizeFormat 
Presence of LaORestricted Access515.14 kBAdobe PDFView/Open    Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.