CENSUS OF BLUE STARS IN SDSS DR8
Abstract
In this work, we present a census of the 12,060 spectra of blue objects ($$(g-r)_0<-0.25$$) in the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8). As part of the data release, all of the spectra were cross-correlated with 48 template spectra of stars, galaxies and QSOs to determine the best match. We compared the blue spectra by eye to the templates assigned in SDSS DR8. 10,856 of the objects matched their assigned template, 170 could not be classified due to low signal-to-noise (S/N), and 1034 were given new classifications. We identify 7458 DA white dwarfs, 1145 DB white dwarfs, 273 rarer white dwarfs (including carbon, DZ, DQ, and magnetic), 294 subdwarf O stars, 648 subdwarf B stars, 679 blue horizontal branch stars, 1026 blue stragglers, 13 cataclysmic variables, 129 white dwarf - M dwarf binaries, 36 objects with spectra similar to DO white dwarfs, 179 QSOs, and 10 galaxies. We provide two tables of these objects, sample spectra that match the templates, figures showing all of the spectra that were grouped by eye, and diagnostic plots that show the positions, colors, apparent magnitudes, proper motions, etc. for each classification. In conclusion, future surveys will be able to use templates similar to stars in each of the classes we identify to classify blue stars, including rare types, automatically.
- Authors:
-
[2];
[2];
[3]
- Burnt Hills-Ballston Lake High School, Ballston, NY (United States); Rensselaer Polytechnic Institute, Troy, NY (United States). Department of Physics, Applied Physics and Astronomy
- Rensselaer Polytechnic Institute, Troy, NY (United States). Department of Physics, Applied Physics and Astronomy
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). Experimental Astrophysics Group
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1395475
- Report Number(s):
- arXiv:1411.5744; FERMILAB-PUB-14-613-CD
Journal ID: ISSN 1538-4365; 1624632
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal. Supplement Series (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal. Supplement Series (Online); Journal Volume: 215; Journal Issue: 2; Journal ID: ISSN 1538-4365
- Publisher:
- American Astronomical Society/IOP
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; blue stragglers; Galaxy: stellar content; novae, cataclysmic variables; stars: AGB and post-AGB; stars: horizontal-branch; stars: statistics; subdwarfs; white dwarfs
Citation Formats
Scibelli, Samantha, Newberg, Heidi Jo, Carlin, Jeffrey L., and Yanny, Brian. CENSUS OF BLUE STARS IN SDSS DR8. United States: N. p., 2014.
Web. doi:10.1088/0067-0049/215/2/24.
Scibelli, Samantha, Newberg, Heidi Jo, Carlin, Jeffrey L., & Yanny, Brian. CENSUS OF BLUE STARS IN SDSS DR8. United States. https://doi.org/10.1088/0067-0049/215/2/24
Scibelli, Samantha, Newberg, Heidi Jo, Carlin, Jeffrey L., and Yanny, Brian. Tue .
"CENSUS OF BLUE STARS IN SDSS DR8". United States. https://doi.org/10.1088/0067-0049/215/2/24. https://www.osti.gov/servlets/purl/1395475.
@article{osti_1395475,
title = {CENSUS OF BLUE STARS IN SDSS DR8},
author = {Scibelli, Samantha and Newberg, Heidi Jo and Carlin, Jeffrey L. and Yanny, Brian},
abstractNote = {In this work, we present a census of the 12,060 spectra of blue objects ($(g-r)_0<-0.25$) in the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8). As part of the data release, all of the spectra were cross-correlated with 48 template spectra of stars, galaxies and QSOs to determine the best match. We compared the blue spectra by eye to the templates assigned in SDSS DR8. 10,856 of the objects matched their assigned template, 170 could not be classified due to low signal-to-noise (S/N), and 1034 were given new classifications. We identify 7458 DA white dwarfs, 1145 DB white dwarfs, 273 rarer white dwarfs (including carbon, DZ, DQ, and magnetic), 294 subdwarf O stars, 648 subdwarf B stars, 679 blue horizontal branch stars, 1026 blue stragglers, 13 cataclysmic variables, 129 white dwarf - M dwarf binaries, 36 objects with spectra similar to DO white dwarfs, 179 QSOs, and 10 galaxies. We provide two tables of these objects, sample spectra that match the templates, figures showing all of the spectra that were grouped by eye, and diagnostic plots that show the positions, colors, apparent magnitudes, proper motions, etc. for each classification. In conclusion, future surveys will be able to use templates similar to stars in each of the classes we identify to classify blue stars, including rare types, automatically.},
doi = {10.1088/0067-0049/215/2/24},
journal = {The Astrophysical Journal. Supplement Series (Online)},
number = 2,
volume = 215,
place = {United States},
year = {Tue Dec 02 00:00:00 EST 2014},
month = {Tue Dec 02 00:00:00 EST 2014}
}
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