Please use this identifier to cite or link to this item:
http://hdl.handle.net/2248/7527
Title: | UVIT open cluster study. I. Detection of a white dwarf companion to a blue straggler in M67: evidence of formation through mass transfer |
Authors: | Sindhu, N Subramaniam, A Jadhav, V.V Chatterjee, Sourav Geller, Aaron M Knigge, Christian Leigh, Nathan Puzia, Thomas H Shara, Michael Simunovic, Mirko |
Keywords: | Open clusters and associations: individual (M67);Stars: individual (blue stragglers, white dwarfs);Ultraviolet: stars |
Issue Date: | 1-Sep-2019 |
Publisher: | IOP Publishing |
Citation: | The Astrophysical Journal, Vol. 882, No. 1, 43 |
Abstract: | The old open cluster M67, populated with blue straggler stars (BSSs), is a well-known test bed to study the BSS formation pathways. Here, we report the first direct detection of a white dwarf (WD) companion to a BSS in M67, using far-UV images from the Ultra-Violet Imaging telescope on ASTROSAT. Near-simultaneous observations in three far-UV bands combined with Galaxy Evolution Explorer, International Ultraviolet Explorer, and ground- and space-based photometric data covering a 0.14–11.5 μm range for WOCS1007 were found to require a binary fit to its spectral energy distribution (SED), consisting of a BSS and a hot companion. On the other hand, a single spectral fit was found to be satisfactory for the SEDs of two other BSSs, WOCS1006 and WOCS2011, with the latter showing a deficient far-UV flux. |
Description: | Restricted Access |
URI: | http://hdl.handle.net/2248/7527 |
ISSN: | 0004-637X |
???metadata.dc.rights???: | © The American Astronomical Society |
???metadata.dc.relation.uri???: | https://doi.org/10.3847/1538-4357/ab31a8 |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
UVIT Open Cluster Study. I. Detection of a White Dwarf Companion to a Blue Straggler in M67.pdf | Restricted Access | 994.55 kB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.