|
other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
| Query : 2025AJ....169...68N |
2025AJ....169...68N - Astron. J., 169, 68 (2025/February-0)
The Lack of RR Lyrae Variables in Ultrafaint Dwarf Galaxy Sextans II.
NGEOW C.-C. and BHARDWAJ A.
Abstract (from CDS):
RR Lyrae in ultrafaint dwarf (UFD) galaxies, if found, would be valuable to constrain the distances of these UFD. In this work, we report our search of RR Lyrae in a recently discovered UFD-Sextans II. Based on multiband (griz) time-series archival DECam imaging data, we do not find any RR Lyrae in Sextans II. On the contrary, the sparse multiband DECam light curves allowed recovery of a known foreground RR Lyrae, BB Sex, which happened to fall within the DECam images, and its pulsation period was correctly identified. Therefore, it is possible that Sextans II lacks RR Lyrae, similar to several other fainter UFDs (with MV ≳ -5.0 mag) that do not have RR Lyrae.
Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.
Journal keyword(s): RR Lyrae variable stars - Dwarf galaxies - Wide-field telescopes
Simbad objects: 3
| Number of rows : 3 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NAME Sextans II | LSB | 10 25 45 | -00 37.9 | ~ | 5 | 0 | |||||
| 2 | V* BB Sex | RR* | 10 25 48.7892289744 | -00 37 30.788408172 | 17.60 | ~ | 11 | 0 | ||||
| 3 | NAME Willman 1 | G | 10 49 21.0 | +51 03 00 | 15.2 | ~ | 345 | 0 |
To bookmark this query, right click on this link: simbad:objects in 2025AJ....169...68N and select 'bookmark this link' or equivalent in the popup menu