2015A&A...575A...2L


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.24CET22:18:16

2015A&A...575A...2L - Astronomy and Astrophysics, volume 575A, 2-2 (2015/3-1)

Mining R Coronae Borealis stars from Catalina surveys.

LEE C.-H.

Abstract (from CDS):

R Coronae Borealis stars (RCBs) are rare carbon stars that lack of hydrogen in their photospheresand are most likely products of white dwarf mergers. A census of RCBs can shed light on the progenitors of SNe Ia in the context of a double degenerate scenario. Traditionally, RCBs are identified by their unpredictable photometric variation with dimmings up to 9 mag, and thus discoveries of RCBs are heavily biased to the limited regions monitored by long-term microlensing experiments. However, recent studies of galactic RCBs have shown that they exhibit distinct mid-infrared colors originating from their cool circumstellar shells, and the all-sky WISE survey facilitates the identification of RCB candidates. Therefore, combining the WISE colors with large area time-domain surveys will enable us to discover more RCBs.This study presents the results of 26 RCB candidates from the Catalina surveys, where five of them are spectroscopically confirmed RCBs and seven of them are previously known carbon stars. This demonstrates the efficacy of this kind of an approach and the potential to discover uncharted RCBs in ongoing and future synoptic surveys.

Abstract Copyright:

Journal keyword(s): circumstellar matter - stars: carbon

Simbad objects: 29

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Number of rows : 29

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 IRAS 02310+3720 * 02 34 05.2703109314 +37 33 52.678114341       19.3   ~ 2 0
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5854 1
3 IRAS 03582+1819 C* 04 01 09.7185913515 +18 28 08.202948772           C 8 0
4 2MASS J05220779-6316532 * 05 22 07.794 -63 16 53.30   20.4   16.8   ~ 1 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15187 1
6 2MASS J05251173-6356209 * 05 25 11.7225694434 -63 56 21.034480097           ~ 3 0
7 2MASS J05253151-6206522 * 05 25 31.5101471883 -62 06 52.247925940       16.5   ~ 2 0
8 IRAS 05236+6918 C* 05 29 06.6105056651 +69 21 15.965629115           Ne 6 0
9 2MASS J05322139-6249144 * 05 32 21.3860782088 -62 49 14.670391320           ~ 2 0
10 SP77 65-2 C* 06 04 05.4756967077 -72 51 22.784384738     14.380 14.290 13.25 C2,2Hd 10 0
11 2MASS J06165954-6530008 * 06 16 59.5475315570 -65 30 00.889811589       20.8   ~ 1 0
12 2MASS J06230335-6608138 IR 06 23 03.3424614694 -66 08 13.896468924           ~ 1 0
13 2MASS J06274183-6810161 * 06 27 41.838 -68 10 16.17       19.9   ~ 2 0
14 2MASS J06385603+5429404 V* 06 38 56.0295450260 +54 29 40.375615048   16.8   16.0   ~ 4 0
15 IRAS 07000-4123 C*? 07 01 37.9456161488 -41 28 16.773078550       17.0   ~ 5 0
16 IRAS 08546+1732 C* 08 57 25.8363808700 +17 20 52.003905852       18.8   C 14 0
17 V* UX Ant RC* 10 57 09.0589612426 -37 23 55.133475845   12.67 12.37     C-Hd 39 0
18 [TI98] 1225-0011 C* 12 27 40.0391331241 -00 27 50.683451590   19.4 15.40 14.2   C-N 14 0
19 2MASS J15514921-0750489 C* 15 51 49.2231287644 -07 50 48.905353822       20.7   C 3 0
20 2MASS J16070119-1434465 * 16 07 01.1961673464 -14 34 46.643460863           ~ 2 0
21 IRAS 16406-1406 LP* 16 43 27.2712305263 -14 12 00.254227650           ~ 6 0
22 DENIS J164729.7-152522 RC* 16 47 29.74 -15 25 22.9         11.898 ~ 4 0
23 V* AO Her LP* 17 35 36.2846778662 +50 24 39.859792565           ~ 7 0
24 IRAS 18364+4720 LP* 18 37 51.2556887394 +47 23 23.467920380           ~ 12 0
25 2MASS J19145205-3249423 * 19 14 52.0468794372 -32 49 42.272472063   18.9   14.2   ~ 1 0
26 IRAS 19393-2039 * 19 42 18.3831094811 -20 32 47.633262718   18.5   17.5   ~ 2 0
27 V* U Aqr RC* 22 03 19.6991502652 -16 37 35.280449107   12.16 11.17     C-Hd 87 0
28 [MAG2004] 23 C* 22 05 14.5812608011 +00 08 45.845780480   18.1   13.6   C-J 7 0
29 BD-17 6524 * 22 26 44.9217039688 -17 03 51.612984540   12.36 11.14 14.2   ~ 1 0

    Equat.    Gal    SGal    Ecl

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2021.02.24-22:18:16

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